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Evgen [1.6K]
3 years ago
15

What type of energy does a cup sitting on a table have? Why?

Chemistry
1 answer:
Sedbober [7]3 years ago
5 0

Answer:

POTENTIAL ENERGY

A cup sitting on a table possesses potential energy

Explanation:

Answer Expert Verified

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3. How many atoms of hydrogen do 3.575 mol of hydrogen sulfide contain?
Ksju [112]

Answer:

4.3043x10^24

Explanation:

Atoms(H) = (3.575 mol H2S/1)(2 mol H/1mol H2S)(6.02x10^23/1molH)

Simple stoicheometry problem. Sorry for taking so long, took Chem sophomore year, its been a while

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Velocity and speed are both measurements of how fast something is moving however velocity is different from speed because
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Solid sodium hydroxide reacts with gaseous carbon dioxide to form solid sodium carbonate salt and liquid water. Formulate the ba
Bond [772]

Answer:

a) 0.925 mol Na2CO3 can be theoretically produced

b) 0.075 moles of the excess starting material remains

Explanation:

balaced chemical:

2 NaOH(s) + CO2(g) ↔ Na2CO3(s) + H2O(aq)

   1.85n          1.00n             Xn

moles theor. Na2CO3:

⇒ nNaCO3 = 1.85nNaOH * ( nNa2CO3 / 2nNaOH)

⇒ nNa2CO3 = 0.925nNa2CO3

moles of the excess:

⇒moles CO2 react = 1.85nNaOH * nCO2 / 2nNaOH = 0.925n CO2

⇒moles CO2 excess = 1.00n - 0.925n = 0.075n excess CO2

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3 years ago
4) Calculate the heat needed to melt 40.0 g of ice at 0°C?
Sav [38]
A lot of heat like a lot no cap it’s gonna he a lot
3 0
3 years ago
A child has a toy balloon with a volume of 1.80 liters. The temperature of the balloon when it was filled was 20° C and the pres
kiruha [24]

Answer:

The new volume of the balloon is 2.422 liters.

Explanation:

Let suppose that gas inside the balloon behaves ideally. From the Equation of State for Ideal Gases, we know that pressure (P), in atmospheres, is inversely proportional to volume (V), in liters, and directly proportional to temperature (T), in Kelvin. Based on this fact, we construct the following relationship:

\frac{P_{1}\cdot V_{1}}{T_{1}} = \frac{P_{2}\cdot V_{2}}{T_{2}} (1)

Where:

P_{1}, P_{2} - Initial and final pressures, in atmospheres.

V_{1}, V_{2} - Initial and final volumes, in liters.

T_{1}, T_{2} - Initial and final temperatures, in Kelvin.

If we know that P_{1} = 1\,atm, V_{1} = 1.80\,L, T_{1} = 293.15\,K, P_{2} = 0.667\,atm, T_{2} = 263.15\,K, then the final pressure is:

V_{2} = V_{1} \cdot \left(\frac{P_{1}}{P_{2}} \right)\cdot \left(\frac{T_{2}}{T_{1}} \right)

V_{2} = 2.422\,L

The new volume of the balloon is 2.422 liters.

8 0
3 years ago
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