2 C4H10(g) + 13 O2(g) --> 8 CO2(g) + 10 H2O(g) When 0.500 moles of butane (C4H10) react with excess oxygen, the mass of carbon dioxide produced is:

What is the temperature of one mole of helium gas at stp?

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins. co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)