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3 years ago

- Unit 1 Worksheet 4

Chemistry

1 answer:

3241004551 [841]3 years ago

4 0

I think it is C or F

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13. Describe the flow of thermal energy. Plz help

just olya [345]

Answer: Thermal energy refers to the energy contained within a system that is responsible for its temperature. Heat is the flow of thermal energy. ... This energy is usually in the form of low-level thermal energy. Here, low-level means that the temperature associated with the thermal energy is close to that of the environment. hope this helps. Can u pls give me brainliest

Explanation:

4 0

3 years ago

A gas balloon has a volume of 106.0 liters when the temperature is 25.0 °C and the pressure is 740.0 mm Hg. What will its volume

ipn [44]

Answer : The final volume of gas will be, 103.3 L

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 740.0 mmHg = 98.4 kPa

Conversion used : (1 mmHg = 0.133 kPa)

$P_2$ = final pressure of gas = 99.3 kPa

$V_1$ = initial volume of gas = 106.0 L

$V_2$ = final volume of gas = ?

$T_1$ = initial temperature of gas = $25.0^oC=273+25.0=298K$

$T_2$ = final temperature of gas = $20.0^oC=273+20.0=293K$

Now put all the given values in the above equation, we get:

$\frac{98.4kPa\times 106.0L}{298K}=\frac{99.3kPa\times V_2}{293K}$

$V_2=103.3L$

Therefore, the final volume of gas will be, 103.3 L

8 0

4 years ago

Which formula represents a compound whose molecules are tetrahedral?

blondinia [14]

......H
......|
H—C—H
..... |
..... H

methane CH4

7 0

4 years ago

What makes urea and breaks down old red blood cells?

klemol [59]

Answer:

The liver

Explanation:

6 0

3 years ago

Read 2 more answers

Which of the following gases has the highest average molecular velocity at 25 °C? H2O

solong [7]

Answer:

Step-by-step explanation:

A postulate of the Kinetic Molecular Theory is that at a given temperature, the average kinetic energy of the molecules is directly proportional to the Kelvin temperature.

KE = ½ mv² ∝ T

mv² ∝ T Divide each side by T

v² ∝ T/m

If T is constant.

v² ∝ 1/m Take the square root of each side

v ∝ 1/√m

This is an inverse relationship, so the molecules with the smallest molecular mass should have the highest average speeds.

A helium molecule has the smallest mass, so helium has the highest average molecular velocity.

8 0

3 years ago