HESI A2
Chemistry Hesi A2 Questions
Question 1 of 5
The molar mass of some gases is as follows: carbon monoxide-28.01 g/mol; helium-4.00 g/mol; nitrogen-28.01 g/mol; and oxygen-32.00 g/mol. Which would you expect to diffuse most rapidly?
Question 2 of 5
What is the charge of a gamma ray?
Question 3 of 5
Which substance shows a decrease in solubility in water with an increase in temperature?
Question 4 of 5
A radioactive isotope has a half-life of 20 years. How many grams of a 6-gram sample will remain after 40 years?
Question 5 of 5
What does a blood sample with a pH of 3 indicate?