Which category of elements is commonly used to make computer chips and solar cells due to their ability to conduct electricity only under certain conditions?
a. metals
b. metalloids
C. nonmetals
d. noble gases

100mg magnesium reacts with 20ml of 1.0m hcl

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm