Indicate if each state below is either True or False: a. If a substance is oxidized, it gains electrons b. If an ion is oxidized, its oxidation number increases c. Oxidation can occur without oxygen d. Oxidation can occur without reduction
Answers
Answer:
a. False
b. True
c. False
d. True
Related Questions
you have 250.0 ml of 6.00 m naoh to which you add 500.0 ml of water. what is the new concentration of naoh in the diluted solution?
Answers
The new concentration of NaOH in the diluted solution is 2.00 M.
The new concentration of NaOH in the diluted solution can be calculated using the formula M1V1 = M2V2, where M1 is the initial concentration, V1 is the initial volume, M2 is the final concentration, and V2 is the final volume.
1. Plug in the given values into the formula:
(6.00 M)(250.0 mL) = (M2)(250.0 mL + 500.0 mL)
2. Simplify the equation:
1500.0 MmL = (M2)(750.0 mL)
3. Solve for M2:
M2 = (1500.0 MmL) / (750.0 mL)
4. Simplify the final answer:
M2 = 2.00 M
Therefore, the new concentration of NaOH in the diluted solution is 2.00 M.
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Consider this initial-rate data at a certain temperature for the reaction described by
2NO2(g) + O3 (g) ----> N2O5 (g) +O2 (g)
[NO2]0 (M) [O3]0 (M) Initial rate (M/s)
0.65 0.8 2.47 x 104
1.1 0.8 4.18 x 104
1.76 1.4 11.70 x 104
*(the second column values are 0.8, 0.8, and 1.4. they are running into the other column).
Determine the value and units of the rate constant.
Answers
Take into account these initial-rate measurements for the reaction given by K has a value of 6.6 s-1.
In eleventh-grade chemistry, what is a reaction?Chemical Response: Chemical reactions are the processes by which a substance or substances change chemically to create a new substance or substances with entirely new attributes. Products are completely distinct in nature and identity from reactants.
A physical reaction is what?A physical response is a reaction that modifies the physical characteristics of an item or material Determinants of physical attributes include things like volume, mass, and density. The definition of a physical reaction is a response in which molecules rearrange one another but do not undergo chemical change.
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Consider these observations of the starting rate for the reaction for which K gives a score of 6.6 s-1.
In eleventh-grade chemistry, what is a reaction?Chemical Reaction: Chemical reactions are now the mechanisms by which a material or substances undergo chemical modification to produce a new substance or compounds with wholly new properties. Products are wholly different from reactants in nature and identity.
A physical reaction is what?A physical response is a reaction that modifies the physical characteristics of an item or material Determinants of physical attributes include things like volume, mass, and density. A physical reaction is defined as an action in which ions rearrange one another without experiencing a chemical change.
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how many molecules are there in 122 grams of NO2
Answers
how many moles of NaOH are produced from 1.20 moles of Na2O?
Answers
N
a
2
O
and we are trying to find the mass of
N
a
O
H
that can be produced, this is a gams to grams
g
r
a
m
s
→
m
o
l
s
→
m
o
l
s
→
g
r
a
m
s
120
.
g
N
a
2
O
x
1
m
o
l
N
a
2
O
62
.
g
N
a
2
O
x
2
m
o
l
N
a
O
H
1
m
o
l
N
a
2
O
x
40
.
g
N
a
O
H
1
m
o
l
N
a
O
H
=
the gfm of
N
a
2
O
is (2 x 23 + 1 x 16 = 62)
the gfm of
N
a
O
H
is (1 x 23 + 1 x 16 + 1 x 1 = 40)
The mole ratio from the balanced chemical equation is 2 moles of
N
a
O
H
for every mole mole of
N
a
2
O
.
According to the stoichiometry of the mentioned chemical reaction,2.40 moles of NaOH are produced from 1.20 moles of Na₂O.
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is used in balancing chemical equations for the law of conservation of mass to be implemented.
According to the reaction, as 1 mole of sodium oxide produces 2 moles of NaOH , therefore 1.20 moles of sodium oxide will produce 1.20×2/1=2.40 moles of sodium hydroxide.
Thus, 2.40 moles of NaOH are produced from 1.20 moles of Na₂O.
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please someone do the underlined question !!! Ill do anything ASAP
Answers
For the reaction, we have that;
2NaOH + H2SO4 -----> Na2SO4 + 2H2O
What is a balanced reaction equation?A balanced reaction equation is a chemical equation that accurately represents the reactants and products in a chemical reaction, where the number of atoms of each element on the reactant side is equal to the number of atoms of that element on the product side.
In other words, a balanced equation follows the law of conservation of mass, which states that the total mass of the reactants must be equal to the total mass of the products in a chemical reaction.
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how many milliliters of 11.5 m hydroiodic acid solution should be used to prepare 4.50 l of 0.200 m hi?
Answers
78 milliliters of 11.5 m hydroiodic acid solution should be used to prepare 4.50 L of 0.200 M hi.
MaVa=MbVb
Now just substitute the values
11.5*x=4.50*0.200
x=0.078260 liters
1 liter is equal to 1000 ml so 0.078260 is multiplyed with 1000
then , x=78 mL.
An aqueous solution of hydrogen iodide is hydroiodic acid. It is a potent acid that totally ionizes in aqueous solutions. It has no color. Concentrated solutions typically range in HI from 48% to 57%. Strong acids are those that entirely separate out in aqueous solutions. For instance, sulphuric acid H 2 SO 4 and hydrochloric acid HCl. Because it totally dissociates in water, the acid that is being used in this instance, hydroiodic acid (HI), is a powerful acid.
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When 496.5 grams of pb(no3)2 reacts completely with kbr, how much will the
total mass of the products be? explain your answer.
mass mass problem - mass of reactant to mass of product
Answers
The total mass of the items is 853.8 g, according to the solution.
How much do the products weigh in total?We are aware that in order to determine the mass of the products and the overall mass of the products produced by the reaction, the stoichiometric principles must be applied.
The answer to the question states that 496. 5 grammes of lead II nitrate react with potassium bromide in a way that the lead II nitrate is totally consumed in the reaction. This indicates that the lead II nitrate is the reaction's limiting reactant.
According to the given information:Number of lead II nitrate moles
= 496. 5 grams /331 g/mol
= 1.5 moles
If 1 mole of lead II nitrate produces 1 mole of lead II bromide
Mass of lead II bromide produced
= 1.5 moles * 367 g/mol
= 550.5 g
If 2 moles of potassium nitrate are created from 1 mole of lead II nitrate
1.5 moles of lead II nitrate produces
= 1.5 * 2 /1
= 3 moles of potassium nitrate
Mass of potassium nitrate
= 3 moles * 101.1
= 303.3 g
Total mass produced
= 550.5 g + 303.3 g
= 853.8 g
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how many moles are present in each of the following at stp? (a) 54.5 dm3 ch4 (b) 250.0 cm3 co (c) 1.0 m3 o2
Answers
(a) 54.5 dm³ CH₄ contains approximately 2.28 moles.
(b) 250.0 cm³ CO contains approximately 0.0121 moles.
(c) 1.0 m³ O₂ contains approximately 43.56 moles.
To determine the number of moles present in each of the given substances at STP (Standard Temperature and Pressure), we need to use the ideal gas law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.
At STP, the conditions are defined as a temperature of 273.15 Kelvin (0 degrees Celsius) and a pressure of 1 atmosphere (atm). The gas constant (R) is equal to 0.0821 L·atm/(mol·K).
(a) 54.5 dm³ CH₄:
To convert dm³ to liters, we multiply by 1 (since 1 dm³ = 1 liter). Therefore, the volume is 54.5 liters.
Using the ideal gas law, we have:
PV = nRT
(1 atm) (54.5 L) = n (0.0821 L·atm/(mol·K)) (273.15 K)
n = (1 atm * 54.5 L) / (0.0821 L·atm/(mol·K) * 273.15 K)
n ≈ 2.28 moles
(b) 250.0 cm³ CO:
To convert cm³ to liters, we divide by 1000. Therefore, the volume is 0.250 liters.
Using the ideal gas law:
PV = nRT
(1 atm) (0.250 L) = n (0.0821 L·atm/(mol·K)) (273.15 K)
n = (1 atm * 0.250 L) / (0.0821 L·atm/(mol·K) * 273.15 K)
n ≈ 0.0121 moles
(c) 1.0 m³ O₂:
To convert m³ to liters, we multiply by 1000. Therefore, the volume is 1000 liters.
Using the ideal gas law:
PV = nRT
(1 atm) (1000 L) = n (0.0821 L·atm/(mol·K)) (273.15 K)
n = (1 atm * 1000 L) / (0.0821 L·atm/(mol·K) * 273.15 K)
n ≈ 43.56 moles
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Try these conversions, using the ladder method.
10) 2000 mg = g
11) 5 L = mL
12) 104 km = m
13) 198 g = kg
14) 2500 m = km
15) 75 mL = __ L
16) 65 g = __ mg
17) 5.6 kg == __ g
18) 8 mm= __ dam
19)5.6m= __ em
20) 120 dag = __ dg
Answers
The conversions are 2000 mg to g id 2 g, 5 ml to l is 0.005 l, 104 km to m is 104000 m, 198 g to kg is 0.198 kg, 2500 m to km is 2.5 km, 75 ml to l is 0.075 l, 65 g to mg is 65000 mg, 5.6 kg to g is 5600 g,8 mm to dm is 0.0008 dm, 5.6 m to cm is 560 cm and 120 dag to dg is 12000 dg.
What is conversion?Conversion is defined as a client action that is performed on your website and is tracked by conversion rate.
1 mg = 0.001 g
1 L = 1000 ml
1 km = 1000 m
1 g = 0.001 kg
1 mm = 0.0001 dm
1 m = 100 cm
1 dag = 100 dg
Thus, the conversions are 2000 mg to g id 2 g, 5 ml to l is 0.005 l, 104 km to m is 104000 m, 198 g to kg is 0.198 kg, 2500 m to km is 2.5 km, 75 ml to l is 0.075 l, 65 g to mg is 65000 mg, 5.6 kg to g is 5600 g,8 mm to dm is 0.0008 dm, 5.6 m to cm is 560 cm and 120 dag to dg is 12000 dg.
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2) Identify the compound with covalent bonds.A) CH4B) ArC) LiBrD) MgE) NaI
Answers
The compound with covalent bonds is option (A) CH₄, also known as methane.
Covalent bonds are formed when two or more atoms share electrons to achieve a stable configuration. Covalent compounds are typically formed between nonmetals or between a nonmetal and a metalloid.
Option (A) CH₄ is a covalent compound formed by a single carbon atom sharing electrons with four hydrogen atoms. It is the simplest hydrocarbon and is a major component of natural gas. Methane is used as a fuel and is also produced by various biological processes, such as the digestive processes of cows and other ruminants.
Option (B) Ar is a noble gas and does not form covalent bonds. Option (C) LiBr is an ionic compound formed between a metal (Li) and a nonmetal (Br). Option (D) Mg is a metal and does not form covalent bonds. Option (E) NaI is an ionic compound formed between a metal (Na) and a nonmetal (I).
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Describe the trends in properties of chlorides across period 3 .Their formula .Their state .Their volatility .Their structure .The ph of aqueous chloride solution
Answers
Answer:
See explanation
Explanation:
Period 3 elements include; Na, Mg, Al, Si, P,S,Cl and Ar
Across the period, the chlorides of the elements change from solid to gas. The chlorides of metals are solid while the chlorides of non metals are gaseous.
Also, the chlorides become more volatile across the period. The formulas of the chlorides change from MCl to MCl2 to MCl3 to MCl4, MCl5 and MCl6 respectively across the period where M is a period 3 element.
The pH of the solutions of chlorides of period 3 elements change from neutral to acidic across the period. The pH of the chlorides of metals are neutral while the chlorides of the nonmetals usually yield acid solutions.
Why do nuclear fusions release energy?
Answers
Answer:
The release of energy with the fusion of light elements is due to the interplay of two opposing forces: the nuclear force, which combines together protons and neutrons, and the Coulomb force, which causes protons to repel each other.
write a balanced chemical equation based on the following description: aqueous barium hydroxide reacts with aqueous ammonium sulfate to produce solid barium sulfate, liquid water and ammonia gas.
Answers
The balanced chemical equation for this reaction is:
Ba(OH)2(aq) + (NH4)2SO4(aq) → BaSO4(s) + 2H2O(l) + 2NH3(g)
Based on the provided description, the balanced chemical equation for the reaction between aqueous barium hydroxide and aqueous ammonium sulfate is:
Ba(OH)2 (aq) + (NH4)2SO4 (aq) → BaSO4 (s) + 2H2O (l) + 2NH3 (g)
In this reaction, aqueous barium hydroxide (Ba(OH)2) and aqueous ammonium sulfate ((NH4)2SO4) react to produce solid barium sulfate (BaSO4), liquid water (H2O), and ammonia gas (NH3). The balanced chemical equation for this reaction is:
Ba(OH)2(aq) + (NH4)2SO4(aq) → BaSO4(s) + 2H2O(l) + 2NH3(g)
Ba(OH)2 (aq) + (NH4)2SO4 (aq) → BaSO4 (s) + 2H2O (l) + 2NH3 (g)
In this reaction, aqueous barium hydroxide (Ba(OH)2) and aqueous ammonium sulfate ((NH4)2SO4) react to produce solid barium sulfate (BaSO4), liquid water (H2O), and ammonia gas (NH3).
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For the given generic reaction, the concentration of A and the amount of time that is required to decrease the concentration to one-half of the initial concentration, t1/2, are directly proportional. Therefore, a decrease in the concentration of A shows a proportional decrease in the half-life, t1/2. A⟶ products What is the order of this reaction? 1 2 0 If the initial concentration of A is 0.893M, and the rate constant for this reaction is 0.0291M⋅s−1 at 400∘C, what is the halflife of this reaction? t1/2= s
Answers
The half-life of this reaction is approximately 23.84 seconds.
The given information suggests that the reaction follows first-order kinetics. In a first-order reaction, the rate of the reaction is directly proportional to the concentration of the reactant.
The half-life of a first-order reaction can be calculated using the equation:
t1/2 = (0.693 / k)
Given:
Initial concentration of A (A₀) = 0.893 M
Rate constant (k) = 0.0291 M·s⁻¹
Substituting the values into the equation, we can calculate the half-life:
t1/2 = (0.693 / 0.0291)
t1/2 ≈ 23.84 seconds (rounded to two decimal places)
Therefore, the half-life of this reaction is approximately 23.84 seconds.
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The given reaction is a first-order reaction and its half-life can be calculated.
Explanation:For a generic reaction, the order of the reaction can be determined by analyzing the relationship between the concentration of the reactant, A, and the half-life, t1/2. In this case, the given information states that the decrease in the concentration of A is directly proportional to the decrease in the half-life. Therefore, this reaction is a first-order reaction.
To determine the half-life of the reaction, we can use the equation for the half-life of a first-order reaction:
t1/2 = (0.693 / k)
Substituting the given rate constant, k = 0.0291M⋅s−1, into the equation:
t1/2 = (0.693 / 0.0291) s = 23.86 s
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PLZ HELP!!! Will name brainliest! 40 points!!!
Element "X" forms the compounds XCl₂ and X₃N₂. In the periodic table, element "X" would most likely be found in Group __?
Answers
Answer:
2
Explanation:
The compounds XCl₂ and X₃N₂ shows that the valency of X is 2. If they are ionic compounds then X is a metal. The metals having valency=2 mostly reside in group-2.
When the pH of a solution is 2, the concentration of hydronium ions is10-2 M = 0.01 M. Is it acidic or basic?
Answers
Answer:
Explanations:
The formula for calculating the pH of the solution is given as:
\(pH=-log[H_3O^+]\)Given that the pH is 2, then;
\(\begin{gathered} 2=-log[H_3O^+] \\ log[H_3O^+]=-2 \\ [H_3O^+]=10^{-2} \\ [H_3O^+]=0.01M \end{gathered}\)Hence the concentration of the hydronium ion is 0.01M
Since the pH of the solution is less than 7, hence the solution is acidic
A compound called resveratrol is an antioxidant, found in the skin of grapes. Identify the functional groups in resveratrol. (12.1,12.3)
Answers
The skin of grapes contains an antioxidant called resveratrol. Determine the resveratrol functional groupings. Alcohol makes comprises the compound's functional group.
What is an alcohol ?An organic molecule known as an alcohol has at least one hydroxyl functional group attached to a saturated carbon atom. The major alcohol ethanol, which is used as a narcotic and is the main alcohol contained in alcoholic beverages, was the substance to which the term "alcohol" originally referred.
Resveratrol is a naturally occurring polyphenol that can be found in a variety of foods, including grapes, berries, peanuts, and several medicinal plants. It has a stilbene functional group in its molecular structure.
Thus, The skin of grapes contains an antioxidant called resveratrol. Determine the resveratrol functional groupings. Alcohol makes comprises the compound's functional group.
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question is below! please tell me more than the equation.
Answers
To convert the astronomical units (AU) into miles, we can use the conversion factor of 1 AU = 93,000,000 miles.
The distances in miles for the given planets and asteroid belt are:
Mercury: 36,015,000 miles (0.387 x 93,000,000)
Venus: 67,146,000 miles (0.722 x 93,000,000)
Earth: 93,000,000 miles (1 x 93,000,000)
Mars: 141,960,000 miles (1.52 x 93,000,000)
Asteroid Belt: 241,800,000 miles (2.6 x 93,000,000)
Jupiter: 484,560,000 miles (5.2 x 93,000,000)
Saturn: 893,940,000 miles (9.58 x 93,000,000)
Uranus: 1,789,440,000 miles (19.2 x 93,000,000)
Neptune: 2,796,300,000 miles (30.1 x 93,000,000)
Pluto: 3,679,250,000 miles (39.5 x 93,000,000)
Therefore, the distances in miles for the given planets and asteroid belt are as above.
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A cube of iron at 20. Degrees C is placed in contact with a cube of copper at 60 degrees C. Which statement describes the initial flow of heat between the cubes?
Answers
Answer:
D) Heat flows from the copper cube to the iron cube.
Explanation:
These are the options for the question
A) Heat does not flow between the cubes.
B) Heat flows in both directions between the cubes
C) Heat flows from the iron cube into the copper cube.
D) Heat flows from the copper cube to the iron cube.
From the knowledge of
second law of Thermodynamicss, which says heat moved from higher temperature to lower temperature region, and termal conduction,energy such as heat will only flow from higher temperature to lower temperature, which means the heat will move from higher concentration to lower Concentration. As the cube of copper at 60 degrees is heated the atoms beginnings to vibrate as it acquire energy then moves and flow to the lower temperature part.
Therefore, Heat flows from the copper cube to the iron cube.
Something about chemistry, is there such thing of mixing items to create medicine. If so what is it called? Medical chemistry?
Answers
Answer:
Drug compounding is often regarded as the process of combining, mixing, or altering ingredients to create a medication tailored to the needs of an individual patient.
If you double the lenght of a wire, how does the resistance of the wire change?
and
If you make a wire twice as thick, how does the resistance of the wire change?
Answers
Answer:
If the length of a wire is doubled the resistance is shortened if it is thicker is is more durable due to the electrons having more room to spread out and flow through the wire
I hope this will help you
consider the reaction: k2s(aq) co(no3)2(aq) ¡ 2 kno3(aq) cos(s) what volume of 0.225 m k2s solution is required to completely react with 175 ml of 0.115 m co(no3)2?
Answers
To completely react with 175 ml of 0.115 M \(Co(NO_3)_2\) solution, approximately 89 ml of 0.225 M \(K_2S\) solution is required.
The balanced chemical equation for the reaction is:
\(K_2S(aq) + Co(NO_3)_2(aq) -- > 2 KNO_3(aq) + CoS(s)\)
From the balanced equation, we can see that the stoichiometric ratio between \(K_2S\) and \(Co(NO_3)_2\) is 1:1. This means that one mole of \(K_2S\) reacts with one mole of \(Co(NO_3)_2\).
To calculate the volume of 0.225 M \(K_2S\) solution needed, we can use the equation:
M1V1 = M2V2
Where:
M1 = molarity of \(K_2S\) solution = 0.225 M
V1 = volume of \(K_2S\) solution
M2 = molarity of \(Co(NO_3)_2\) solution = 0.115 M
V2 = volume of \(Co(NO_3)_2\) solution = 175 ml = 0.175 L
Plugging in the values, we have:
(0.225 M)(V1) = (0.115 M)(0.175 L)
Solving for V1:
V1 = (0.115 M)(0.175 L) / 0.225 M
≈ 0.089 L = 89 ml
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PLS HELP ASAP
Which of these is an example of a chemical reaction that releases energy?
A.boiling water
B.burning wood
C.photosynthesis
D.melting ice cubes
Answers
Answer:
B) burning wood
Explanation:
im pretty sure it is burning wood
If the reactants on the left side of a chemical equation are c3h8+ 5o2, what would the products in a balanced equation be ?.
Answers
c3h8 + 5o2 = 3Co2 + 4h2o
Whenever combustion of hydrocarbon occurs, we get Co2 and h2o as product.Carbon atoms on reactant side is 3 therefore, to make equation balance multiply Co2 by 3.Then, balance hydrogen on reactant side, they are 8 therefore, multiply 4 to h2o to make h = 8Left out is o2 which is o2 = 10 , to make equation balance multiply 5 on reactant side.What do you mean by combustion?
Combustion, a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in the form of flame. The rate or speed at which the reactants combine is high, in part because of the nature of the chemical reaction itself and in part because more energy is generated than can escape into the surrounding medium, with the result that the temperature of the reactants is raised to accelerate the reaction even more.
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The balanced equation for this reaction is C3H8 + 5O2 → 3CO2 + 4H2O.
What is reaction?
Reaction is a response to a particular event, stimulus, or situation. It is a change in behavior, attitude, or emotion in response to a particular occurrence. It is often an instinctive or spontaneous response, although it can be learned and sometimes even conditioned. Reactions can range from the physical, such as a reflex, to the emotional, such as laughter or anger. It is important to note that reactions are not always conscious or intentional; sometimes they are automatic and subconscious.
The reactants are propane (C3H8) and dioxygen (5O2). The products are carbon dioxide (3CO2) and water (4H2O). This reaction is a combustion reaction, meaning that the reactants are being oxidized by the oxygen to form carbon dioxide and water. The equation is balanced because the number of atoms of each element on the left side of the equation (reactants) is equal to the number of atoms of each element on the right side of the equation (products).
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What are some downside to wearing mask?
Answers
there isnt really any but if your sick it will not effect you and if its too moist just change it often Explanation: and if you got your vaccine some places will let you not wear your mask but yuo have to be fully vaccinated
Answer:
None
Explanation:
This is just my opinion but all the little struggles that come with wearing a mask are worth it if it keeps me out of the ICU
And PLEASE! If the vaccine is availibale to you, get it!
Which of the following is not a fossil fuel?
o copper
natural gas
O petroleum
O coal
Answers
Answer:
copper
Explanation:
coal, petroleum, and natural gas are all related to fossil fuels.
Copper is not a fossil fuel and the correct option is option 1.
What are fossil fuels?Fossil fuels are compound mixtures made of fossilized plant and animal remnants from millions of years ago. The creation of fossil fuels—either oil, natural gas, or coal—from these fossils is determined by the type of fossil, the amount of heat, and the amount of pressure.
Fossil fuels are a non-renewable source of energy. Most of the energy used by us is obtained by the burning of fossil fuels. These fossil fuels are used up at a faster rate. They cannot be regrown at a scale compared to their consumption.
Therefore, Copper is not a fossil fuel and the correct option is option 1.
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The molar mass of PH3 (34.00 g/mol) is larger than that of NH3 (17.03 g/mol), but the boiling point of NH3 (-33 °C) is higher than that of PH3 (-87 °C). Explain why this makes sense.
Answers
The boiling point of a compound is determined by the strength of the intermolecular forces between its molecules.
While PH3 is heavier than NH3, NH3 has stronger intermolecular forces because it can form hydrogen bonds with other NH3 molecules, while PH3 can only form weaker London dispersion forces. As a result, NH3 has a higher boiling point than PH3, despite its lower molar mass.
The boiling point of a substance is related to the strength of its intermolecular forces. The strength of the intermolecular forces is related to the polarity of the molecule and its size. NH3 is a polar molecule due to the electronegativity difference between N and H atoms, and it has a bent shape that further increases its polarity. NH3 can participate in hydrogen bonding, which is the strongest type of intermolecular force, with other NH3 molecules. In contrast, PH3 has a nonpolar trigonal pyramidal shape and is not able to form hydrogen bonds, only weak van der Waals forces. Therefore, NH3 has stronger intermolecular forces, requiring more energy to overcome these forces and boil compared to PH3, which explains why NH3 has a higher boiling point than PH3 despite having a lower molar mass.
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Jack walks outside in the afternoon and noticed the clouds are very dark. He states that it looks like it will rain very soon. His statement can be classified as A) prediction B) observation C) inference D) hypothesis
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Answer:
I think it would be A but it might be B please tell if wrong
Answer:
A prediction
Explanation:
A prediction, or forecast, is a statement about a future event. They are often, but not always, based upon experience or knowledge and jack is using his knowledge on clouds to predict when it is going to rain.
From the viewpoint of the chemical reactants as the system, what do you expect for the signs of q and w in this process?.
Answers
When q and w are positive, energy flows into the system.
When atoms establish or break chemical bonds, chemical processes take place. Reactants are the substances that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.
What are reactants and products in chemistry?Summary. A chemical reaction is described by an equation in chemistry. The left side of the equation lists reactants as the initial materials. The right-hand side of the equation lists the products, which represent the outcome of the reaction.In a chemical reaction, reactants undergo a chemical reaction and transform into products through a chemical process. For instance, when humans breathe in oxygen, it combines with glucose to create carbon dioxide, water, and energy. The response is provided below. C6H12O6 + O2 = 6CO2 + 6H2O + Energy.When atoms establish or break chemical bonds, chemical processes take place. Reactants are the substances that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.To learn more about Chemical reaction refer to:
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Which of the following defines the wavelength of a wave?
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Answer:
where is the questions........
Answer:Wavelength can be defined as the distance between two successive crests or troughs of a wave. It is measured in the direction of the wave. Description: Wavelength is the distance from one crest to another, or from one trough to another, of a wave (which may be an electromagnetic wave, a sound wave, or any other wave).