14. Identify the type of reaction: Pb + 2 AgCl → 2 Ag+ PbCl2
a. Combination/synthesis
b. Decomposition
c. Double replacement
d. Single replacement

If a gas is at a pressure of 180 Kpa and a temperature of 300 K, the temperature will be 460 K at that pressure.

Gay-Law Lussac's states that, for a given volume, the relationship between pressure and temperature is one of direct proportionality. The initial pressure and temperature of a gas are P1 and T1, respectively. The final temperature and pressure of a gas are P2 and T2, respectively.

According to this, this is. P1 being equal to 180 kpa T2 =? and T1 = 300 K, 276 Kpa, and? replace with the aforementioned formula.

As a result, the offered questions are at a temperature of 460K.

If a gas is at a pressure of 180 Kpa and a temperature of 300 K, the temperature will be 460 K at that pressure.  

The complete question is,

At a temperature of 300 K, a gas has a 180 kPa pressure. How hot will the gas be before it reaches 276 kPa in pressure? Nothing alters the volume.

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Answer:

The answer is in the problem

Explanation:

As general rule of number of oxygen is -2:

O → -2

Alkali metals (Li, Na, K) are always +1

Na → +1

Alkali earth methals (Be, Mg, Ca...) are always +2

Ca → +2

The halogen group (F, Cl, Br...) is always -1

F → -1

The oxidation number of Si (+/- 4)

Aluminium is, usually +3

And to complete the octet rule in nitrogen, 3 electrons are required. That means:

N → -3

Answer:

B it reduces the need for fossil fuels

Explanation:

I got the answer wrong and it showed B was the right one

Compounds are formed by the combination of atoms of different elements. Molecules are formed by atoms of same elements. Thus, N₂ is a molecule not a compound.

Compounds are formed by the combination of atoms of different elements. There are different kinds of compounds such as ionic compounds, covalent compounds.

For example, water, H₂O is a compound formed from two hydrogen atoms and oxygen atom. Similarly carbon dioxide or CO₂ is a covalent compound formed from two oxygens and one carbon atom. Methane or CH4 also is a compound.

N₂ is a molecule and not a compound. It is formed by the combination of two equivalent nitrogen atoms. Therefore, option C is correct.

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Each person should choose 6 items from Column A and 4 items from Column B, ensuring that everyone orders the same number of items from each column. Option B

To divide the items evenly among four people while ensuring that each person orders the same number of items from each column, we need to find the common divisor of the number of items in each column.

Column A has 24 items, and Column B has 16 items. The common divisor of 24 and 16 is 8. Therefore, each person should choose 8 items.

Since there are 24 items in Column A, and each person needs to choose 8 items, the answer is 24 divided by 8, which equals 3. Each person should choose 3 items from Column A.

Similarly, since there are 16 items in Column B, and each person needs to choose 8 items, the answer is 16 divided by 8, which equals 2. Each person should choose 2 items from Column B.

Therefore, the correct answer is:

B) 6 from A, 4 from B

Each person should choose 6 items from Column A and 4 items from Column B, ensuring that everyone orders the same number of items from each column.

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The atmospheric conditions at a particular time.

i did the test.

Answer:

the atmospheric conditions at a particulur time

Explanation:

Answer:

The mass of water is  14292.24 g

Explanation:

Given data:

Mass of cups and water = 142,99 g

Mass of cups = 6.76 g

Mass of water = ?

Solution:

Mass of cups + water = mass of cups + mass of water

Now we will rearrange the formula

mass of water = (Mass of cups + water) - mass of cups

Now we will put the values.

mass of water = 142,99 g + 6.76 g

mass of water = 14292.24 g

Thus mass of water is  14292.24 g.

The average wavelength of the fluorine molecule will be 2.36 × 10⁻¹¹ metres.

Fluorine Molecule's Speed = 442.4 m/s

The Molar Mass of the F₂ = 38 g/mol

Now as we know that any molecule's

1 mole contain  = 6.022 × 10²³ Molecule

So, 1 Fluorine molecule mass =

Fluorine's Molar mass / Number of Fluorine molecule in 1 mole

So, 1 Fluorine molecule mass = 38 / ( 6.022 × 10²³ )

1 Fluorine molecule mass = 6.31 × 10⁻²³ g

1 Fluorine molecule mass = 6.31 × 10⁻²⁶  Kg

So molecule's momentum = Molecule's mass × Molecule's Velocity

So molecule's momentum = ( 6.31 × 10⁻²⁶ ) × 442.4

So molecule's momentum = 2.8 × 10⁻²³  Kg.m/s

Now wavelength of Fluorine molecule = λ = planks constant / momentum

wavelength of Fluorine molecule = λ = ( 6.626 × 10⁻³⁴ ) / ( 2.8 × 10⁻²³ )

wavelength of Fluorine molecule = λ = 2.36 × 10⁻¹¹ metre

So the wavelength of the diatomic fluorine molecule came out to be 2.36 × 10⁻¹¹ metres after applying all the concepts and formulas.

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Answer:

true

Explanation:

Condensation is the opposite of vaporization. True. When does condensation occurs, does a gas lose or gain thermal energy?

Answer:

True

Explanation:

Condensation is formed with moisture and cold air, so the removal of thermal energy, or heat, would create the perfect conditions :)

Answer:

b.exothermic and entropy is decreasing

Answer:

See explanation

Explanation:

In this question, we have to follow the IUPAC rules. Lets analyze each compound:

a. 1-methylbutane

In this compound we have a chain of 5 carbons, so the correct name is Pentane.

b. 1,1,3-trimethylhexane

In this compound, we longest chain is made of 7 carbons, so, we have to use the name "heptane". Carbon one would be the closet one to the methyl group, so the correct name is  2,4-dimethylheptane.

c. 5-octyne

In this case, carbon 1 would be the closet one to the triplet bond. With this in mind, the correct name is oct-3-yne.

d. 2-ethyl-1-propanol

In this compound, we longest chain is made of 4 carbons, so, we have to use the name "butane". Carbon one would be the carbon with the "OH" group, so the correct name is  2-methylbutan-1-ol.

e. 2.2-dimethyl-3-butanol

In this case, carbon 1 would be the closet one to the "OH". With this in mind, the correct name is 3,3-dimethylbutan-2-ol.

See figure 1

I hope it helps!

Answer:

Ai --> Bii

Aii --> Bi

Aiii --> Bv

Aiv --> Biii

Av --> Biv

Explanation:

For Ai, naphthalene sublimes directly from a solid to gas when heated at around 80 degree Celsius.

For Aii, Ozone has a molecular formula of O₃.

For Aiii, weeds are normally considered as "unwanted" plants. Many people may consider using herbicides to clear the weeds in their gardens.

For Aiv, filtration is a physical method for separating solid and liquid from a mixture. A filter paper is normally used, in which the complex structure of the paper only allows fluid to pass through it, but not the solid ones. The solid left behind on the filter paper is called "residue".

For Av, photosynthesis is a chemical reaction that occurs in the leaves of a plant, which produces food for plants to survive. Carbon dioxide, water and light are required for photosynthesis to take place.

Answer:

Density = 11.25

Explanation:

Using the formula

p = \(\frac{m}{v}\)

we can use that, p is for density

p = 36.24 ÷ 3.22

p = 11.25

Hope this helps!

Have a nice day!

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At equilibrium, the HI concentration is 2.92 mol/L.

For the process H2(g)+CO2(g)updownarrow H2O+CO. at 1660 °C, the equilibrium constant KP is 4. In a 5 liter flask, 0.8 moles each of H2 and CO2 are first injected. Reactions occur in the following order with relation to H2: 1. In experiments 1 and 2, the reaction rate doubles when the initial concentration of H2 is doubled while the initial concentration of Cl2 is held constant.

H2(g) + I2(g) ⇌ 2HI(g)

c = [HI]² / [H2][I2]

At the specified temperature, c = 53.3, hence the following can be written:

53.3 = [HI]^2 / (0.400 mol/L) × (0.400 mol/L)

or, [HI]² = 53.3 × 0.16

or, [HI]² = 8.528

or, [HI] = sqrt(8.528) mol/L

or, [HI] = 2.92 mol/L

As a result, 2.92 mol/L of HI are present at equilibrium.

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Answer:

C

Explanation:

The number of moles of nitrogen that can be produced theoretically will be 3.2655 moles.

The equation of the reaction is as follows:

\(2N_2H_4 + N_2O_4 --- > 3N_2 + 4H_2O\)

The mole ratio of \(N_2H_4\) reacted to that of \(N_2\) produced is 2:3.

Thus, with 2.177 moles of  \(N_2H_4\) , the theoretical number of moles of \(N_2\) can be calaculated as:

                         3/2 x 2.177 = 3.2655 moles

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Answer:

La datación potasio-argón o 40K/40Ar es un método de datación radiométrica, surgido en la década de 1960, utilizado en geología y arqueología para datar rocas o cenizas volcánicas

Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

The new volume of the gas whose pressure was changed would be = 40 milliliters.

The initial volume(V1)of the gas= 20ml

The initial pressure(P1) = 4 atm

The final pressure(P2) = 2 atm

The final volume(V2) = ?

Using the general gas formula;

P1V1 = P2V2

V2 = P1V1/P2

= 4×20/2

= 40ml

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First you need to write out the original equation.

\(NiCO_{3(s)}+ HI_{aq} ->NiI_{2(aq)}+CO_{2(g)}+H_2O_{(l)}\)

It needs to be balanced, though, so after balancing it should look like this:

\(NiCO_{3(s)}+ 2HI_{aq} ->NiI_{2(aq)}+CO_{2(g)}+H_2O_{(l)}\)

The ionic equation would look like this. (Only aqueous solutions can be split up).

\(NiCO_{3(s)}+ 2H^+_{aq}+2I^-_{aq} ->Ni^{2+}_{aq}+2I^-_{(aq)}+CO_{2(g)}+H_2O_{(l)}\)

The net ionic equation only contains the products that are not aqueous. Therefore, the final net ionic equation should be:

\(NiCO_{3(s)}+ 2H^+_{aq} ->Ni^{2+}_{aq}+CO_{2(g)}+H_2O_{(l)}\)

So your answer is C.

Answer:

Answer

Answer is option B coz da negative charge r more thn positive

Answer:

B.

Explanation:

On the hand in the option B there are 3 positive and 5 negative signs so the answer is B.

According to the given description the chemical formula for the molecule represented by the model is C₄H₉O₂.

Chemical  formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols  of elements. It also makes use of brackets and subscripts.

Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form  is called empirical formula.

There are four types of chemical formula:

1)empirical formula

2) structural formula

3)condensed formula

4)molecular formula

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Answer: 161.6268 square inches

Explanation: Area of a rectangle is length (or width) times the height. So, 14.6 * 11.01 is 161.6268 square inches. Area is always in square units.

Answer:

the pressure at the top of the mountain was 0.85 atm.

Explanation:

We can use the combined gas law to solve this problem:

(P1 * V1) / (T1) = (P2 * V2) / (T2)

where P1, V1, and T1 are the initial pressure, volume, and temperature, and P2, V2, and T2 are the final pressure, volume, and temperature.

Assuming that the temperature remains constant, we can simplify the combined gas law to:

P1 * V1 = P2 * V2

where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.

Substituting the given values, we get:

P1 * 1.0 L = 1 atm * 0.85 L

P1 = (1 atm * 0.85 L) / 1.0 L

P1 = 0.85 atm

1. The name of the compound is 2-ethyl-1-butene

2. The name of the compouund is 1-chloro-1-propene

3. The name of the compouund is trans-2,3-dibromo-2-pentene

The IUPAC name of the compound can be obtained by doing the following:

With the above information, the name of the compound is 2-ethyl-1-butene

The IUPAC name of the compound can be obtained by doing the following:

With the above information, the name of the compound is 1-chloro-1-propene

The IUPAC name of the compound can be obtained by doing the following:

With the above information, the name of the compound is trans-2,3-dibromo-2-pentene

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​104895.10 kilometers need to drive for the lower fuel consumption of the second car to compensate for the higher cost of this car.

For calculating the number of  miles  we need the compare the cost equation of both cars.

Considering x be the number of kilometers, since the mileage of the USA-made car is (22.5 * 1.609) / 3.785 = 19.56-kilo meter per litre, and the cost of petrol  per Litres = 2.05 .

SO for the USA made the pertrol cost is 2.05 / 9.56 = $0.214per km

and for the european made car is  2.05 / 28.5 = $0.071 per km

since the total cost is nothing like the sum of the purchase price and the fuel cost SO,  

for the  USA  made , the total  cost  is  = 85,000  + 0.214x and

for the  eurpoean car is   = 100,000 + 0.071x

By comparing the equation by considering the total cost for a car  to be equal so

85,000  + 0.214x =100,000 + 0.071x

=>100,000- 85,000 = 0.214x- 0.071x

=>15000= 0.143x

=>x=  104895.10

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