Which radioisotopes have the same decay mode and have half-lives greater than

hour?

(1) Au-198 and N-16 (3) 1-131 and P-32

(2) Ca-37 and Fe-53 (4) Tc-99 and U-233

A sample of nitrogen gas had a volume of 500. ml, a pressure in its closed container of 740 torr and a temperature 25 degrees c of what was the new volume of the gas when the temperature was changed to and the new pressure was

How many grams of AlCl3 (Molar mass = 133.5 g/mol) are needed to prepare 125 mL of a 0.150 M solution? A) 20.0 g AlCl3 B) 16.7g AlCl3 C) 2.50 g AlCl3

Why is it hard to prove the law when a gas is produced?

What scientist described a positively charged core in the middle of the atom

What is the difference between homogenous mixtures and heterogeneous mixtures? can u give examples?

What is the percent composition of sulfur compound that contains 20.8 g carbon and 54.4 g sulfur?

Which of the following is an example of heat transfer by conduction? A. The upstairs of a house being warmer than the downstairs B. Burning your finger on a hot match C. The sun warming your skin D. Being warmed by a fire on a cold night

How much did John save in his 401 (k) in the 2014 tax year?

Explain why the chemical released from the injured fish may not cause in a wa why the chemical released from the injured fish may not cause in alarm response in other fish species

hat historical figure was responsible for developing the system for categorizing living things that is still used today? A) Sir Isaac Newton B) Carolus Linnaeus C) Benjamin Franklin D) Galileo