Is the reaction with potassium iodide solution and Lead (ll) nitrate solution a physical or chemical change

A. physical change

B. chemical change

Why is large-scale nuclear fission a rare phenomenon on Earth? A. There isn't enough energy to start a chain reaction in nature. B. There are no naturally occurring atoms that can undergo fission left on Earth. C.

Name an item scientist may use to observe with a camera, hand lens and microscope

What happens when nitrogen fills its valence shell? a. three electrons are lost, creating n 3 b. three electrons are lost, creating n-3 c. three electrons are gained, creatingn 3 d. three electrons are gained, creatingn-3

When hydrogen is burned in oxygen to form water, the composition of water formed does not depend on the amount of oxygen reacted. interpret this in terms of the law of definite proportion?

What is the volume, in mL, of 6.66 g of acetone?

For beta radiation, what stops its penetrating abilities? aluminum a piece of paper skin thin fabric

1.00 L of a gas at standard temperature and pressure is compressed to 473 mL. What is the new pressure of the gas?

How can I balance this equation __NH4NO3->__N2+__H2O

If a plane is traveling300 mph how long will it take to travel 1800 miles

How do you get friends