If the half-life of a radioactive substance is 2 seconds, how much of a 100-gram sample would be left after 8 seconds?

Given the following equation: Zn + 2HCI - H2 + ZnCl2 How many moles of HCl are needed to react with 0.50 moles of Zn?

If 5.50 mol of HCl and 3.00 mol of O2 react according to the following equation, how many grams of water will form?

In scientific notation, 213,000 is equal to

Which of the following describes nuclear fission? It requires extremely high temperatures to begin the reaction. It involves the combining of nuclei. It involves bonding electrons. Its chain reactions can be initiated by neutrons.

What's the ratio of atoms of each element in the compound ammonium monohydrogen phosphate (NH4) 2HPO4?

Explain why gas is condensed when they're cooled

Rutherford's famous gold foil experiments shot heavy particles at a thin sheet of gold foil. What did he observe, and why did these observations eventually result in the addition of a nucleus to the atomic model?

In the Periodic Table, what is the relationship between two elements that are placed side-by-side in a row? A. The element on the left has one more electron. B. The element on the left has one more proton. C.

What are two traits of pseudoscience

What will happen if an electric current is flowing through a cord and a magnet is brought near the cord?