Iodine-131 is a radioactive isotope. after 7.00 days, 54.7% of a sample of 131i remains. what is the half-life of 131i?

Which is an example of a mixture

Determine the average rate of decomposition of h3po4 between 10.0 and 40.0 s. express your answer with the appropriate units.

You grab a can of coke out of the fridge on a humid summer day. It immediately start "sweating", where water droplets are forming on the outside of the can. Identify the phase change and explain what is happening on a molecular level

The Dendrite Of Nerve Cells Send Or Receive Information?

A paper burning is A. heat or B. chemical

Complete the matching exercise below by choosing the correct description of each bond type in aqueous solution. 1. covalent bond 2. hydrogen bond 3. electrons shared by atoms a. electrons shared by atoms b.

One mole of calcium ions has the same number of representative particles as which of the following? one mole of calcium nuclei one mole of calcium atoms 6.02 x 1023 calcium ions All of these are correct.

How is chemical symbol and chemical formula difference?

Why is a cis-1,3-disubstituted cyclohexane more stable thanits trans isomer?

How many grams of aluminum will react with 3.4 moles of chlorine