A mixture of three gases , A , B , and C are in a 10 L container . The partial pressure of gas A is 1.68 atm , that of gas B is 3.89 atm , and that of gas C is atm . What is the total pressure of the mixture of gases ? A. 5 atm

B 1.11 atm

C. 10.57 atm

D. 7.21 atm

What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17

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.

Stage in which a star’s outer layers have started to cool and grow outward?