PLEASE HELP ASAP The volume of a gas is 3.0 L, the pressure is 1.0 atm, and the temperature is 300 K. A chemist changes one factor while keeping another constant so that the new volume is 2.0 L. What are the new conditions?

A. The final pressure is 0.5 atm, while temperature is kept constant.
B. The final temperature is 200 K, while pressure remains constant.
C. The final pressure is 0.2 atm, while temperature is kept constant.
D. The final temperature is 350 K, while pressure remains constant.

relative humidity is a measure of the amount of moisture in the air relative to the total amount of moisture the air can hold.

so d

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g