Which of these is a heterogeneous mixture?
- ASugar dissolved in tea
- BAir
- COil and water
- DSalt dissolved in water
Which of these is a heterogeneous mixture?
Which type of radiation is the most penetrating?
Which of these is a chemical property?
Uranium-235 and uranium-238 both have 92 protons. How many more neutrons does an atom of uranium-238 have?
What is the conjugate base of nitric acid, HNO₃?
A gas mixture contains nitrogen at 600 mmHg, oxygen at 150 mmHg and other gases at 10 mmHg. What is the total pressure?
An unknown element is shiny, conducts electricity, and reacts vigorously with water to form a basic solution and hydrogen gas. In which group is it most likely?
A reaction at equilibrium has a very large equilibrium constant (K much greater than 1). What does this tell you?
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