5/3if 87.5 percent of a sample of pure 131 i decays in 24 days, what is the half-life of 131 i?

How many molecules are in. 500 moles of h2

6. Which is a characteristic of a mixture?

assuming oxygen behaves like an ideal gas, what volume in liters would 3.50 moles of oxygen gas occupy at STP?

Which of the following is an example of chemical energy being released or stored? A. The wind blows a kite through the sky. B. The water in a river moves small rocks and sticks. C. A coal power plant releases energy when coal burns. D.

Elements have a series of ionization energies for removing the first and additional electrons from the atom. Each ionization energy increases for successive electrons being removed.

What is the chemical formula for polysaccharide?

What is the empirical formula of a compound composed of 32.9g of potassium and 6.73 g of oxygen

Glucose is not made from which of the following

Rank the temperatures from the highest to the lowest. 133F 351K 25C 273K 146C 58F 95F

Calculate the density of sulfuric acid if 35.4 mL of the acid weighs 65.14 g.