How might the eruption of a large volcano affect weather for years to come

0.25 mole of O2 will contain the same number of molecules as 0.25 mole of NH3. true or false?

An 8.50 grams block of aluminum is heated with 54.98 kJ of energy. The temperature changed from 22.8 C to 94.6 C. What is the specific heat capacity of aluminum?

2. If volume is increased, the number of collisions per second

A 0.150 M sodium chloride solution is referred to as a physiological saline solution because it has the same concentration of salts as normal human blood. Calculate the mass of NaCl solute needed to prepare 275.

A molecular technologist has run a vertical get. While analyzing the gel, the technologist notices that the bands in the outer lanes did not run as far as similar-sized bands in the inner lanes, so the bands looked like a smile on the gel.

Sodium chloride is stirred into water to form a solution. in this case, what are sodium chloride and the water?

What can form as a result of a chemical reaction?

A solution of orange juice that weighs 500 g contains liquid juice and solid pulp. All of the pulp is removed from the juice. The pulp is found to weigh 50 g. How much would the remaining liquid juice weigh? A. 50 g B. 250 g C. 450 g D. 500 g

Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2 How many molecules of H2 are produced? How many water molecules are required? What is the mole ratio of Fe to H2O?

10.0 mL of a HF solution was titrated with a 0.120 N solution of KOH; 29.6 mL of KOH were required to completely neutralize the HF. Calculate the normality of the HF solution.