A radioactive sample has a half life of 1500 years. A sealed tube containing 1g of the sample will contain after 3000years.

(A) 1 g of the sample

(B) 0.5 g of the sample

(C) 0.25 g of the sample

(D) 0.00 g of the sample

Infer if a substance can contain thermal energy, can a substance also contain heat?

if atoms of lithium and sodium easily give up a single electron which other elements also have this property

Because amines are basic, they can often accept a proton. draw the protonated structure of n-propylamine

Volume is a measurement of how fast particles of a substance are moving. true or false.

Which of the following statements is true about the nucleus? A - The strong nuclear force and the residual strong force hold the nucleus together. B - Only neutrons hold the nucleus together.

Can anyone tell me how to balance chemical equations

Nomadic people received income from where

How many milliliters of 0.755 m h2so4 solution is needed to react with 55.0 ml of 2.50 m koh solution? given: 2 koh (aq) + h2so4 (aq) → 2 h2o (l) + k2so4 (aq) ?

Ammonia is among the top ten synthesized compounds. Its many uses include the manufacture of ammonium nitrate and other fertilizers. Ammonia decomposes at high temperatures. In an experiment to explore this behavior, 2.

How to seperate sand and water