Amixture contains 35.07 grams of carbon dioxide, 27.93 grams of water vapor, 12.64 grams of nitrogen, and 5.54 grams of helium. the total pressure of the system is 12 atm, what is the partial pressure of the helium?
a. 0.88 atm
b. 0.82 atm
c. 0.073 atm
d. 0.068 atm

Explanation:

For this question, we must use Dalton's Law of Partial Pressures:

The partial pressure of a gas in a mixture of gases equals its mole fraction times the total pressure:

1. Calculate the number of moles of each gas.

2. Calculate the total moles

3. Calculate the mole fraction of helium

4. Calculate the partial pressure of helium:

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.