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

Which of the following is not a pure substance

You mix 5.25 moles of A with 7 moles of B in the chemical equation 3A + 4B 2C + 3D. Which statement is true about the reactants? B has a greater molar mass than a. A has a greater molar mass than b. B is the limiting reactant. c.

What is typically displayed on the x-axis of a solubility curve? Select one of the options below as your answer: a. grams of solvent per 100 grams of water b. grams of solute per 100 grams of water c. the temperature of the solution d.

A student sees a change in mass in the lab when mixing two chemicals what is a possible explanation?

A plant leaf is an organ that traps light energy to make food. In what way is an animal stomach similar to a plant leaf? ill give brainliest

A container with a volume of 3.46 liters contains a gas at a pressure of 1.30 atmospheres and a temperature of 274.27 Kelvins. How many moles of gas are in the container?

Benzene, C6H8, has an enthalpy of fusion = 10.19 kJ/mol. Calculate the amount of energy which is needed to change 88.0 g of solid benzene at 5.53°C into liquid benzene, also at 5.53°C?

What is the H3O + ion concentration of a solution that has an OH - ion concentration of 1.0 * 10^-3M? A) 1.0 * 10^-3M B) 1.0 * 10^-7M C) 1.0 * 10^-11M D) 1.0 * 10^-14M

Given the following chemical reaction: 2 O2 + CH4 CO2 + 2 H2O In the reaction of 6 moles of CH4 with excess oxygen, how many moles of water could be produced? 6 C 12.01 Carbon 1 H 1.01 Hydrogen 8 O 16.00 Oxygen A. 4 B. 6 C. 8 D. 12

Most mutagens have what kind of an effect on an organism?