Given 1.00 grams of each of the following radioisotopes, Ca-37, U-238, P-32 and Rn-222, which would have the least remaining original isotopes after 100 years?

1) Ca-37

2) U-238

3) P-32

4) Rn-222

You spill a little bit of olive oil on your hands. You wash off the oil with soap and water. How does the soap get the oil off your hands?

Which of the following answers best describes how velocity and acceleration are related? Question 18 options: Acceleration is another word for velocity. Velocity is the rate of change in acceleration.

What particle in an atom makes each element unique?

How has overpopulation changed the rule about recycling and use of resources

Which of the following observations indicate an Atom has neutrons

How many moles of co2 are produced when 10 mol of propane (c3h8) is burned in excess oxygen?

Why are the spheres representing nitrogen and oxygen different colors

How many moles are in 16.94g of water?

Two compound samples are found to have the same mass percentages of the same elements. what can you conclude about the two samples

Sodium hypochlorite (Na xCl yO z) is the active ingredient in household bleach. A 250.0 g sample of sodium hypochlorite contains 77.2 g sodium, 119.1 g chlorine, and the remainder is oxygen. Calculate the empirical formula of sodium hypochlorite.