When a compound such as X2Z4 is created, what would be the
correct simplified chemical formula?
Answers
Answer:
XZ2
Explanation:
There are different ways in which compounds can be represented. Broadly, we have three different types of formula;
- Structural formular: This shows how th atoms in te compound are connected to each other.
- Molecular formular: This shows the actual number of atoms of element present in the compound
- Empirical Formular: This is the simplest formular of a compound. It basically shows the number of atoms in simple ration to each other.
This question requires us to input the empirical formular;
X2Z4
The ratio of the elements is; 2 : 4 which can be simplified into 1 : 2
This means the empirical formular is XZ2
Related Questions
Question 1
1. Na2O + H20 --->
NaOH
A. Single Replacement
B. Double Replacement
c. Decomposition
D. Synthesis
E. Combustion
Answers
Answer: D. Synthesis
Explanation:
Sodium Oxide + Water = Sodium Hydroxide
if you answer both question i will give brailest
20 points
Answers
Answer:1. C
2.A
Explanation:
for mn3 , enter an equation that shows how the cation acts as an acid.
Answers
MnO2+ is called manganic ion and is a powerful oxidizing agent. The above equation shows how Mn3+ cation acts as an acid.
Manganese(III) cation (Mn3+) can act as an acid under certain conditions. Mn3+ has an incomplete d-shell, resulting in the availability of electrons to donate, making it a Lewis acid. Mn3+ may react with water or other species as an acid, releasing a proton, which can be expressed in a chemical equation as follows:Mn3+ + H2O ⇌ MnO2+ + H+The above equation displays how the cation, Mn3+ acts as an acid.
In chemistry, Mn3+ or manganese(III) cation refers to the manganese ion with a charge of +3. A cation is an ion that carries a positive charge. Mn3+ has an incomplete d-shell, resulting in the availability of electrons to donate, making it a Lewis acid. Mn3+ can act as an acid, as it can accept a pair of electrons from a species or donate a proton to another species.
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the process by which different minerals melt at different temperatures is called
Answers
The process by which different minerals melt at different temperatures is called partial melting.
Partial melting happens when just a part of a strong is liquefied. For blended substances, for example, a stone containing a few distinct minerals or a mineral that shows strong arrangement, this soften can be not quite the same as the mass structure of the strong. Partial melting happens where the solidus and liquidus temperatures are unique. For single minerals this can happen when they show strong arrangement, for instance in olivines among iron and magnesium. In rocks comprised of a few distinct minerals, some will dissolve at lower temperatures than others.
On account of raising the temperature, mantle dissolving will possibly happen assuming the mantle is warmed past the typical geotherm. It is accepted that intensity motion from the center and lower mantle is liable for expanding the temperature of the upper mantle. Nearby bothers of the geothermal inclination, like areas of interest, are not surely known however are viewed as a possible intensity hotspot for the mantle.
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How much heat is produced from the complete combustion of 30.0 g of methane, if the enthalpy of reaction is -890 kj/mol?
Answers
The heat produced from the complete combustion of methane is 1,664.59 kJ.
The chemical energy from the combustion reaction is converted into thermal energy. The thermal energy or heat produced by a mole of a substance, methane, would be the same as the enthalpy of reaction/combustion.
First, we need to determine the number of moles of methane. As stated in the problem, complete combustion is achieved for 30.0g of methane. The molecular weight (MW) of methane is 16.04 g/mol.
Mole methane= mass methane/MW methane
Mol methane= 30 g / 16.04 g/mol
Mol methane= 1.87 mol
We can now multiply it by the given enthalpy of the reaction to determine the heat produced.
Heat produced= enthalpy of reaction * mol methane
Heat produced= 890 kJ/mol * 1.87 mol
Heat produced= 1,664.59 kJ
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How is carbon dioxide released by animals? *
O during inhalation
O during exhalation
O during urination
O during eating
Answers
Answer:
Exhaled
Explanation:
Answer:
Exhale
Explanation:
Just like humans
If there are only two atoms in a molecule, what would make it nonpolar?
Answers
Answer:
In general, if the electronegativity difference between two atoms is less than 0.5, the bond is considered nonpolar, even though the only truly nonpolar molecules are those formed with identical atoms. Nonpolar molecules also form when atoms sharing a polar bond arrange such that the electric charges cancel each other out.
Explanation:
sorry if I'm wrong or if this doesn't help you
the element gold contains group of answer choices gold atoms. atoms that combine to produce gold. gold atoms plus various slightly lighter and heavier atoms.
Answers
Chemical bonding between atoms results in the formation of compounds, which are original structure of Gold made up of two or more atoms. Chemical formulas can be used to describe a compound's fundamental makeup.
What is Lighter and heavier atoms ?
Uranium is the heaviest element that naturally occurs in substantial amounts (atomic number 92). Like gold, it is mineable. A natural occurrence of technetium (atomic number 43) is not known. Atomic number 61 promethium does not naturally occur. In nature, Plutonium-244 (244Pu) has been found!
Light elements like hydrogen and helium were created at the big bang, while stars' centres use fusion to create elements up to iron. Gallium and bromine, two heavier elements, require something more, like a supernova.
By consulting the periodic chart, you can quickly determine which elements are the lightest (see Resources).
The top number on each element's square, the atomic number, indicates how many protons are present, while the bottom number, the mass number, indicates the relative atomic mass of each element.
What are the contents of Gold ?
All naturally occurring gold is the isotope Au-197. The radioactivity of the remaining 28 isotopes allows for their artificial production. The periodic table shows that gold, silver, and copper together make up a column. They are all naturally occurring and were the first three elements that man was aware of.
The chemical element gold has the atomic number 79 and the symbol Au (derived from the Latin word aurum). This places it among the naturally occurring elements with higher atomic numbers. In its purest state, it is a vivid, slightly orange-yellow, thick, soft, malleable, and ductile metal.
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Which of the following is referenced in the modern "periodic law"
A. Atomic mass
B. Electron configuration
C. Wavelengths of radiation
D. Atomic number
Answers
Astronomy students are planning an investigation to study the Andromeda galaxy. In order to be able to study the galaxy as clearly as possible, they will need to see the night sky with zero percent (0%) illumination from the moon. The students observed a full moon on May 3rd. What is the approximate date the investigation should be done
May 10
May 17
May 24
May 31
Answers
Answer:
May 17
Explanation:
When it refers to 0% light it describe a new moon, from a new moon to a full Moon are 14 days, then if you start a full moon on May 3 and you add 14 days it means that the next new Moon would be on May 17.
Consider the following chemical reaction at equilibrium:
2NO₂(g) ⇌ N₂O₄(g) ∆H°rxn < 0
If the temperature is increased by 20 K while the volume is kept constant, in which direction will the equilibrium shift?
Answers
Equilibrium shifts to the left (towards reactants) when temperature increases.
Equilibrium and temperature relationship?To determine the direction in which the equilibrium will shift when the temperature is increased while the volume is kept constant, we need to consider the effect of temperature on the reaction's enthalpy (∆H°rxn) and the reaction's stoichiometry.
In this case, the reaction is exothermic (∆H°rxn < 0) because the enthalpy change is negative. When the temperature is increased, according to Le Chatelier's principle, the equilibrium will shift in the direction that minimizes the change in temperature.
Since the reaction is exothermic, it releases heat when it proceeds in the forward direction (2NO₂(g) ⇌ N₂O₄(g)).
Therefore, to counteract the increase in temperature, the equilibrium will shift in the endothermic direction, which is the reverse reaction.
So, when the temperature is increased by 20 K while the volume is kept constant, the equilibrium will shift to the left (towards the reactants), favoring the formation of NO₂(g) and reducing the concentration of N₂O₄(g).
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9. given the following reagents in an electrochemical reaction: cd (s), cd(no3)2 (aq), kno3, agno3 (aq), and ag (s), write out (1) the two half-cell reactions and (2) the net reaction.\
Answers
(1) The two half-cell reactions are:
Cd(s) -> Cd2+(aq) + 2e-
2Ag+(aq) + 2e- -> 2Ag(s)
(2) The net reaction is:
Cd(s) + 2Ag+(aq) -> Cd2+(aq) + 2Ag(s)
In the first half-cell reaction, solid cadmium (Cd) is oxidized to form cadmium ions (Cd2+) and two electrons (2e-). In the second half-cell reaction, silver ions (Ag+) are reduced to form solid silver (Ag) and two electrons (2e-).
To combine the two half-cell reactions and determine the net reaction, the electrons on both sides must be balanced. Since two electrons are produced in the first reaction and two are consumed in the second reaction, they cancel out. Thus, the net reaction involves the solid cadmium reacting with silver ions to form cadmium ions and solid silver.
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if water at 0 oc is heated, it actually decreases in volume until it reaches4°C5°C6°C7°C
Answers
When water at 0°C is heated, it actually decreases in volume until it reaches 4°C. Yes, that is correct.
This is because as water is heated, its molecules start to move faster and the space between them increases. However, at 4°C, water molecules become more densely packed due to the formation of hydrogen bonds, which causes an increase in volume. This continues until water reaches its maximum density at 4°C. As the temperature increases beyond 4°C, the volume of water begins to decrease again until it reaches 7°C, where it starts to expand again.
If water at 0°C is heated, it actually decreases in volume until it reaches 4°C. At temperatures between 5°C, 6°C, and 7°C, the volume of water will begin to increase again as it continues to be heated.
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Balancing Chemical Equations & Identifying Chemical Reactions
Balance the Equation Identify the Type of Chemical Reaction
_____P4 + __5__O2 _____P4O10 Combustion
_____Al2O3 _____Al + _____O2
Al: Al:
O: O:
_____H2O2 _____H2O + _____O2
H: H:
O: O:
_____CH4 ______C2H6 + _____H2
C: C:
H: H:
_____C + _____H2 _____C2H6
C: C:
H: H:
_____Fe + _____H2O _____Fe3O4 + _____H2
Fe: Fe:
H: H:
O: O:
_____N2 + _____H2 _____NH3
N: N:
H: H:
_____Na + _____O2 _____Na2O
Na: Na:
O: O:
_____NaCl + _____CaSO4 _____Na2SO4 + _____CaCl2
Na: Na:
Cl: Cl:
Ca: Ca:
SO4 : SO4:
_____C2H6 + _____O2 _____CO2 + _____H2O
C: C:
H: H:
O: O:
_____K + _____B2O3 _____K2O + _____B
K: K:
B: B:
O: O:
_____Na + _____NaNO3 _____Na2O + _____N2
Na: Na:
N: N:
O: O:
Challenge:
_____CH3CH2CH2CH3 + _____O2 _____CO2 + _____H2O
Answers
Which of these is a mineral?
1) sugar
2) oxygen
3) water
4) halite
Answers
Halite is a common evaporite mineral.
Sugar, Oxygen, and water are NOT minerals.
So therefore the answer is 4. Halite
Answer:
D
Explanation:
Oxygen is an element.
sugar is a hydrocarbon derivative.
water is a compound made of hydrogen and oxygen. There are no metals in it at all.
So you are left with Halite. The common name for halite is salt. The chemical formula is NaCl
Answer: D
Are new atoms made during a chemical reaction?
Answers
Answer:yes
Explanation:depending on the chemical properties and amount of the chemical and the state of matter and amount of mass
Enantiomers are: A) Molecules that have at least one stereogenic center. B) non-superposable molecules. C) Molecules that have a mirror image. D) non-superposable constitutional isomers. E) non-superposable molecules that are mirror images of each other
Answers
Enantiomers are: E) non-superposable molecules that are mirror images of each other.
What is stereoisomerism?In Science, stereoisomerism is sometimes referred to as spatial isomerism and it can be defined as a form of isomerism in which chemical species of molecules have the same molecular formula, but differ in how their atoms are positioned (arranged) in three-dimensional orientations of space.
This ultimately implies that, stereoisomerism occurs when two molecules are composed of the same atoms that are connected in the same sequence but these atoms are positioned (arranged) differently in space.
Based on scientific records, enantiomers are mirror images of one another and cannot be aligned in space to be identical because they are non-superposable molecules.
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Rank the three elements according to their ionization energy,
from highest to lowest:
Chlorine (CI), Strontium (Sr), lodine (1)
Answers
Highest——— Lowest
Chlorine > Iodine > Strontium
Determine the number of bonding electrons and the number of nonbonding electrons in the structure of.
Answers
A full valence shell's number of electrons less the amount of electrons involved in bonding equals the number of non-bonding electrons (which is 2 x the typical number of bonds). The amount of electrons not in bonds is equal to the number of lone pairs divided by two.
How can you tell how many electrons are involved in bonds and how many are not?A full valence shell's number of electrons less the amount of electrons involved in bonding equals the number of non-bonding electrons (which is 2 x the typical number of bonds). The amount of electrons not in bonds is equal to the number of lone pairs divided by two.Method 1 for Calculating Bond Order (immediately determine bond order, half bond order) Antibonding Electrons.According to the molecular orbital theory, the difference between bonding and anti-bonding electrons is accounted for by the bond order. Additionally, the molecule will grow more stable the higher the bond order.To learn more about Bonding electrons refer to:
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1. 0 g of h_{2}o_{2} solution (30 wt%) was titrated with 22. 143 ml of kmno_{4} solution. What is the molarity of the kmno_{4} solution? Report your answer with three decimal places. Molar mass: H2O2 = 34. 01g/mol Reaction: 2MnO2 + 5H2O2 + 6H+ + 2Mn +2 +502 +8H2O Type your numeric answer and submit
Answers
The molarity of the KMnO4 solution is 0.532 M (rounded to three decimal places).
To calculate the molarity of the KMnO4 solution, we need to use the stoichiometry of the reaction and the volume of the KMnO4 solution used in the titration.
Given:
Mass of H2O2 solution = 1.0 g
Concentration of H2O2 solution = 30 wt% (weight percent)
Volume of KMnO4 solution used = 22.143 mL
Molar mass of H2O2 = 34.01 g/mol
Step 1: Calculate the moles of H2O2 in the solution.
Moles of H2O2 = (Mass of H2O2 solution) / (Molar mass of H2O2)
= 1.0 g / 34.01 g/mol
= 0.0294 mol
Step 2: Calculate the moles of KMnO4 based on the stoichiometry of the reaction.
According to the balanced equation, the ratio of KMnO4 to H2O2 is 2:5.
Therefore, moles of KMnO4 = (Moles of H2O2) * (2/5)
= 0.0294 mol * (2/5)
= 0.01176 mol
Step 3: Calculate the molarity of the KMnO4 solution.
Molarity (M) = (Moles of KMnO4) / (Volume of KMnO4 solution in liters)
= 0.01176 mol / 0.022143 L
= 0.5316 M
Therefore, the molarity of the KMnO4 solution is 0.532 M (rounded to three decimal places).
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which has a lower freezing point oxygen or ethonal
Answers
Answer:
Ethanol
Explanation:
Please helpp!!!!
1. Covering with greases on the iron makes _____________ .
1. stopping air and water from being in contact with the iron.
2. reacting with oxygen and/or water instead of iron
3. slipping the foreign materials
2. Which substance can react with copper to make copper carbonate?
3. What is the product of the combustion reaction of lithium.
4. In presenting the evidence in the table, the variable you change is written in the ___________.
1. left column
2. middle column
3. left row
4. right column
5.The iron corrosion, rusting, can be prevented by coating with __________, __________ and __________ .
6.In the chemical reaction, the substances you end up with are different from the ones you started with is called __________.
1. are not reversible
2. create new substances
3. compound
4. mixture
7. A ______________ is a chemical reaction that happens on the surface of a metal.
1. combustion reaction
2. corrosion reaction
3. metal reaction
4. acid reaction
8.In a chemical equation, the reactants and products are ____________ from each other.
1.different
2. the same
3. separated
4. obtained
9. As silver reacts with polluted air, a black compound, _____________ is formed.
1.silver carbonate
2. silver sulfide
3. silver oxide
4. silver alloy
Answers
1) Covering with greases on the iron stops air and water from being in contact with the iron.
2) The substance that can react with copper to make copper carbonate is silver carbonate
3) The combustion of lithium produces lithium oxide
4) The table is not shown hence the question can not be answered
5) another metal, oil and grease
6) The chemical reaction creates new substances.
7) A corrosion reaction is a chemical reaction that happens on the surface of a metal.
8) .In a chemical equation, the reactants and products are different from each other.
9) As silver reacts with polluted air, a black compound, silver oxide is formed.
What is oxidation?In the process of oxidation, we are just burning up a substance in oxygen. When we burn the substance in oxygen, there is an increase in the oxidation number of the object and oxygen is also added to the object. This is what we call oxidation of a substances.
Now we know that oxygen is abundant in the universe and thus it can be used in the burning of a substances. In effect we can look at the process of combustion as a situation in which we burn an object in air.
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Which one of acid is stronger: the pH value of acid X is
2 and the pH value of acid is 6? Explain
Answers
Explanation:
Hey there!
Your answer is: acid X having ph value 2.
The reason is when we see on an indicator, we find that different ph values of acids and bases. Generally, acids are located in left side of an indicator. 1,2,3 are most strong acid and 4,5,6 are weak acid according to the indicator's study.
So, we can derive that " X " acid is strong.
Hope it helps...
What do you call a substance that can only be separated into two or more simpler substances using chemical changes?
Answers
Answer:
Compounds are substances composed of two or more elements chemically combined that can be separated into simpler substances only by chemical means. Water, for example, is a compound because pure water is composed of only H2O molecules.
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how many milliliters of 10.5 m hcl(aq)10.5 m hcl(aq) are needed to prepare 205.0 ml205.0 ml of 1.00 m hcl(aq)?
Answers
The milliliters of 232 quantity of HCl required for preparing 1M HCl.
The fact that water has a concentration of 10-7 for both hydronium and hydroxide must be taken into account when the concentration of acids very close to or less than 10⁻⁷.
We frequently overlook the ion concentration in water for the same reason that we frequently ignore the mass of electrons (we just add the protons and neutrons), which is that they are so minute. For taking the -log conc, there is an exception in this case.
M1 * V1 = M2 * V2
10.5 * V1 = 1 * 740
V1 = 70.48 ml
Initial moles of solute are calculated as follows: molarity * volume in liters = 12 * (61/1000) = 0.0732 moles.
The 238 ml of solution now contains these moles.
0.0732 moles are present in 238 ml of solution.
Therefore, 119 ml of solution will contain = 0.0732 * 119 / 238 = 0.0366 moles of solute.
As of right now, the solution's total volume is 119 /113 = 232 ml, or 0.232 liters.
Final concentration is equal to moles divided by the volume in liters, or 0.0366/0.232, or 0.158 M.
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22
Which of the following statements about acids and alkalis is TRUE?
(1 Point)
ammonium hydroxide is alkaline due to the presence of OH+ ions
hydroxide ions make sodium hydroxide solution alkaline
O hydrochloric acid solution is acidic because it contains hydride ions
Answers
Answer:
''hydroxide ions make sodium hydroxide solution alkaline'' is true.
Explanation:
In the first sentence, OH+ ions is incorrect. It has to be OH- ions.
In the last sentence, hydride ions(H-ions) is incorrect. It has to be hydrogen ions(H+ ions).
Explain how climate change affects the weather. PLEASE HELP!!!
Answers
Answer:
Climate change affects weather by causing longer droughts and higher temperatures in some regions and more intense deluges in others.
? Match the states of matter to their properties. Drag the items on the left to the correct location on the right. solids Indefinite shape, but definite volume liquids indefinite shape and indefinite volume M gases definite shape and definite volume lowest density particles glide past each other highest density Done Try hear
Answers
Answer:
Solids: definite shape and definite volume (highest density)
Liquid: indefinite shape and definite volume (glide past each other)
Gas: indefinite shape and indefinite volume (lowest density)
Explanation:
look at the answer
How does an emerging idea differ from scientific consensus? Which best describes emerging scientific ideas?
Answers
Emerging scientific ideas are new theories or ideas that are gaining attention in the scientific community, but have not yet been fully accepted or confirmed.
Emerging ideas refer to the new and innovative ideas or theories that have yet to gain full scientific acceptance. While a scientific consensus is a view or theory that has been universally accepted and confirmed by multiple experiments or research, an emerging scientific idea is a new and unproven theory or idea that is gaining attention in the scientific community. These emerging ideas may also be referred to as scientific hypotheses. In contrast to scientific consensus, emerging scientific ideas have not yet been subjected to rigorous testing and confirmation.
They are generally proposed to explain new observations or experimental results, which have not yet been fully understood or explained by established scientific theories. Emerging scientific ideas can have the potential to challenge the current scientific consensus. If an emerging scientific idea is found to be valid, it can ultimately lead to the establishment of a new scientific consensus. For example, the emerging scientific idea of the Higgs boson particle led to the discovery of a new field in particle physics, which is now an established scientific consensus.
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what type of heat transfer takes place when you come in contact with a snow flake on a cold day?
Answers
Answer:
Conduction
Explanation:
Conduction is how heat transfers through direct contact with objects that are touching. Any time that two objects or substances touch, the hotter object passes heat to the cooler object.
Answer:
Conduction
Explanation:
Conduction is how heat transfers through direct contact with objects that are touching. Any time that two objects or substances touch, the hotter object passes heat to the cooler object.