The half-life of 131I is 8.021 days. What fraction of a sample of 131I remains after 24.063 days

Phosphorus-32 has a half-life of 14.0 days. Starting with 4.00 g of 32P, how many grams will remain after 84.0 days?

Smoke fiilling up a room is diffusion or not

3n=$18.75 what isbthe value of n

The molecule hydrogen fluoride (hf) contains a polar bond h - f, where fluorine is more electronegative than hydrogen. which is the appropriate representation of the h - f bond?

When snow melts does its volume decrease or increase?

A student makes observations when water is added to a blue solution of copper sulfate. The student makes only 1 observation: the solution changes to a lighter shade of blue. Is this an example of a chemical reaction? Explain your reasoning.

When dos the spring tide occur

As ice transforms into steam, Question options: new molecules are formed. the types of atoms are changed. energy is absorbed by the molecules. the mass of the molecules is increased.

Why do chemists consider the periodic table so useful?

Plates include large sections of Earth Oceanic or Continental