Use the van der Waals equation to calculate the pressure, in atm of 37.98 mol of hydrogen at 391 °C in a 2.2 L container. Values of van der
Waals Constants for Some Common
Gases
Gas
atm 1
mol
mol
He
Н.
0.034
0.244
1.39
1.36
0.0237
0.0266
0.0391
0.0318
0.0562
0.0427
0.0428
3.59
2.25

X

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)

1. they vary with a higher number because boiling is way hotter than melting

i believe the answer is true.