if you start with 48 g of a radioactive substance and have 0.75 g left how many half lives have elapsed

Why doesn't the evaporation flask have bubbles below the surface

In an atomic model that includes a nucleus, negative charge is

For a fixed amount of gas at a fixed volume, what will happen if the absolute temperature is doubled?

How do you think the crocodile might affected if it wandered near a strong magnet?

A chemist adds 0.50L of a 0.485 M copper (II) sulfate CuSO4 solution to a reaction flask. Calculate the millimoles of copper (II) sulfate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

What is physical change in chemistry?

Testable question: does the water need to be hot or cold to make a cloud. What data can I use for my science project

Carbohydrate metabolic enzymes bind D-glucose specifically. D-glucose has an estimated caloric value of 1 k. cal per 4 grams of carbohydrate.

An atom in the excited state can have an electron configuration of

4fe (s) + 3o2 (g) →2fe2o3 (s) how many grams of Fe2O3 are produced when 12.0 of iron rusts