If the temperature of an object is 335 K, how would this be expressed on the Celsius scale?

A. 273 C

B. 608 C

C. 37 C

D. 62 C

What would be the charge of an atom with more protons? More electrons? Equal number of both?

A 5.5 g sample of a substance contains only carbon and oxygen. Carbon makes up 35% of the mass of the substance. The rest is made of oxygen. You are asked to determine the mass of oxygen in the sample.

What is an alloy of copper and zinc?

A car is traveling north at 48 kilometers per hour. A force applied to the breaks reduces the car's rate of motion to 24 kilometers per hour. This change will affect which of the following? A. the car's mass B. the car's destination C.

Which reaction is an example of heterogeneous catalysis?

Which observation provided Albert Einstein the clue that he needed to explain the photoelectric effect

Which of the followings represents a negatively charged ion

Why do you think plant fossils are less common than body fossils?

Why are valence electrons important?

A woman carriers her 100-newton child for a distance of 50 meters to the child's bedroom. How much work does the woman do?