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noname [10]
2 years ago
14

How many molecules does 1 mole of O2 gas have?

Chemistry
2 answers:
ch4aika [34]2 years ago
4 0

Answer:

D

Explanation:

6.02 x 1023 molecules

raketka [301]2 years ago
3 0

Answer:

d.6.02×1023 molcules

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A container holds 500. ML of CO2 at 20.° C and 742 torr. What will be the volume of the CO2 if the pressure is increased to 795
Ludmilka [50]

Answer: 466.67 ml

Explanation:

Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.

P\propto \frac{1}{V}   (At constant temperature and number of moles)

Thus

P_1V_1=P_2V_2  [according to Boyle's law]

742torr\times 500ml=795torr\times V_2

V_2=466.67ml


4 0
3 years ago
Read 2 more answers
How many oxygen atoms are in the reactants?
Pani-rosa [81]
The answer would be 2
7 0
2 years ago
What is the molar mass of a gas if 0. 473 g of the gas occupies a volume of 376 ml at 23. 0°c and 1. 90 atm?.
frozen [14]

Answer:

The molecular weight of the unknown gas is 16.1 g/mol.

6 0
2 years ago
Calculate the number of calories needed to increase the temperature of 50.0 g of copper metal from 21.0 degrees C to 75.0 degree
KonstantinChe [14]
<h3>Answer:</h3>

1031.4 Calories.

<h3>Explanation:</h3>

We are given;

Mass of the copper metal = 50.0 g

Initial temperature = 21.0 °C

Final temperature, = 75°C

Change in temperature = 54°C

Specific heat capacity of copper = 0.382 Cal/g°C

We are required to calculate the amount of heat in calories required to raise the temperature of the copper metal;

Quantity of heat is given by the formula,

Q = Mass × specific heat capacity × change in temperature

   = 50.0 g × 0.382 Cal/g°C × 54 °C

   = 1031.4 Calories

Thus, the amount of heat energy required is 1031.4 Calories.

4 0
3 years ago
Why does nobody fking answer my questions.
raketka [301]

Answer:

by wearing of rocks

Explanation:

earths gravity your welcome

6 0
3 years ago
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