Calculate the final temperature, in degrees Celsius, for each of the following, if V and n do not change:
a. A sample of xenon gas at 25 °C and 740. mmHg is cooled
to give a pressure of 620. mmHg.
b. A tank of argon gas with a pressure of 0.950 atm at -18 °C
is heated to give a pressure of 1250 Torr.

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

coral.

explanation:

coral. many marine organisms that produce calcium carbonate shells or skeletons are negatively impacted by increasing co2 levels and decreasing ph in seawater.

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