Monday
May 20, 2013

# Posts by billystar

Total # Posts: 5

math
if h is an antiderivative of g(x) = x^3 / (1 + x^5) and h(1) = 2, then h(3) = a. 4.407 b. 2.555 c. 1.852 d. 0.555 e. -0.703

HELLO I NEED HELP AND NOBODY EVER HELPS ME.
1. the molar mass of helium is 4.00 g/mol. calculate the volume of 1 mol of helium at STP (T = 273, P = 1 atm) what is the density of helium at STP? 2. the density of an ideal gas is 1.35 kg/m^3. if the temperature is Kelvin and the pressure are both doubled, find teh new dens...

science
1. the molar mass of helium is 4.00 g/mol. calculate the volume of 1 mol of helium at STP (T = 273, P = 1 atm) what is the density of helium at STP? 2. the density of an ideal gas is 1.35 kg/m^3. if the temperature is Kelvin and the pressure are both doubled, find teh new dens...

physics/chem
the density of alumnium is 2.7 g/cm^3 and its molar mass is 27 g/mol. find the mass of an atom of aluminum and the numebr of alumuminum atoms per cubic meter.

sci
why does the earth cool off at night much more quickly when the sky is clear than cloudy

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