2. Find the volume of gas in each problem below. Assume they are gases at STP, a. 4.35 moles of H2
b. 66.5 grams of O2
C. 0.00245 moles of CO2
d. 5.25 x 1026 molecules of CH4
e. 24.5 g of Cl2

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

What is the temperature of 0.750 mol of a gas stored in a 6,850 ml cylinder at 2.21 atm? . 2.95 k 5.24 k 138 k 246 k