Which of the following is true about a scientific theory
a. a theory can never be changed
b. a theory can be changed to explain new observations or experimental results
c. a theory can be formed after a single experiment
d. a theory is a proposed explanation for a hypothesis

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

At a temperature of 393 k, the temperature of a sample of nitrogen is 1.07 atm what will the pressure be at a temperature of 478 k

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?