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4 years ago

Which answer choice correctly describes the gas law and physical changes represented by the image?

Chemistry

2 answers:

vazorg [7]4 years ago

8 0

A. The image shows Boyle’s law because volume increases as pressure increases

skelet666 [1.2K]4 years ago

5 0

Answer:

<h2>A. The image shows Boyle's Law because volume decreases as pressure increases.</h2>

Explanation:

According to Boyle's Law, at constant temperature, pressure and volume have inverse relation that is as pressure would increase, volume would decrease.

According to Charles Law, at constant pressure, the volume is directly proportional to temperature.

According to the given graph and diagram, the temperature is constant and volume and pressure have inverse relation.

Thus, option A is correct.

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You decide to make a salad for dinner. You have lettuce, tomatoes, olives, onions, cheese, and of course your favorite salad dre

Brums [2.3K]

Homogeneous mixture. (all of the different components of the salad are shown)

4 0

3 years ago

Read 2 more answers

A graduated cylinder is filled with 54.32 cm3 of water. An irregular solid made of iron is carefully placed into the graduated c

NeTakaya

Answer:

<h3>The answer is 26.22 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

density of iron = 7.874 g/cm³

volume = final volume of water - initial volume of water

volume = 57.65 - 54.32 = 3.33 mL

We have

mass = 7.874 × 3.33 = 26.22042

We have the final answer as

Hope this helps you

3 0

3 years ago

a 100.0 g sample of a metal m is burned in air to produce 103.7 g of its oxide with the formula m2o. what is the atomic mass of

Ahat [919]

The molar mass should be 14.898g/mol. I used the equation 100gx(1/xg/mol)x(1mol/2mol)x(16g/mol+x)/1)=103.7 and solve for x. I found that equation using stoichiometry and the equation 2m+1/2O2-->m2O The molar mass of the metal I set to x and the molar mass of the metal oxide is 16+x.

6 0

3 years ago

Solve the equation for n 0.0092=0.608 x (n/84.01)+n/52.5

kotegsom [21]

Answer:

$n\approx 0.350$

Explanation:

<u>1. Rewrite the equation in a more appropriate format for a better understanding: </u>

$0.0092=0.608\times \dfrac{n}{84.01}+\dfrac{n}{52.5}$

<u />

<u>2. Multiply the whole equation (both sides) by 84.01 × 52.5 to eliminate the denominators:</u>

$0.0092\times 84.01\times 52.5=0.608\times 52.5n+84.01n$

<u>3. Do the operations:</u>

$40.57683=31.92n+84.01n$

<u>4. Add like terms:</u>

$40.57683=115.93n$

<u />

<u>5. Divide both sides by 115.93:</u>

$0.350011\approx n\\\\n\approx 0.350011\\\\n\approx 0.350$

3 0

4 years ago

Considering the following precipitation reaction: Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq) Which ion would NOT be present in

Allisa [31]

Answer:

The question is incomplete and confusing.

In the complete ionic equation you write all the ions that are formed. Those are: Pb²⁺, NO₃⁻, K⁺, and I⁻. They all are present in the complete ionic equation.

In the net ionic equation, the spectator ions do not appear. They are: NO₃⁻ and K⁺. They would not be present in the net ionic equation, but they do in the complete ionic equation.

See below the details.

Explanation:

Which compound will not form ions?

<u />

<u>1. Write the balanced molecular equation:</u>

Pb(NO₃)₂(aq) + 2KI(aq) → PbI₂(s) + 2KNO₃(aq)

<u />

<u>2. Write the ionizations for the ionic aqueous compounds:</u>

<u />

Pb(NO₃)₂(aq) → Pb⁺²(aq) + 2NO₃⁻(aq)

2KI(aq) → 2K⁺(aq) + 2I⁻(aq)

2KNO₃(aq) → 2K⁺(aq) + 2NO₃⁻(aq)

<u />

<u>3. Write the complete ionic equation:</u>

Pb⁺²(aq) + 2NO₃⁻(aq) + 2K⁺(aq) + 2I⁻(aq) → PbI₂(s) + 2K⁺(aq) + 2NO₃⁻(aq)

Hence, since PbI₂(s) does not ionize, but stays in solid form, it will not form ions.

All, Pb⁺², NO₃⁻, K⁺, and I⁻ will be present in the total ionic equation.

It is in the net ionic equation that the spectator ions are removed. Those, are NO₃⁻ and K⁺, because they are on both sides of the complete ionic equation.

3 0

3 years ago