What is the pH of an aqueous solution with [H3O+] = 6*10-12 M?

What is the molar mass of H20

Which statement about the mass of subatomic particles is false? a) A proton has a mass of 1 amu. b) A neutron has slightly more mass than a proton. C) An electron has slightly less mass than a proton. d) none of the above

Elements are solid, liquid, and gas substances that can be found on Earth. Which statement best describes an element? 1. Elements can be separated into smaller atoms. 2. Elements are fast moving subatomic particles. 3.

What mass of C6H12O6 is needed to make a 0.1 liter solution with a concentration of 0.1 moles?

1. Define the law of conservation of mass.

How many elements are in one molecule of Methane? How many elements are in one molecule of Ammonia? How many elements are in one molecule of Vinyl Alcohol? How many elements are in one molecule of Ethylene?

A banana split contains 1.12 million calories. What is the energy value in kilojoules? a. 1.12 kJ b. 4.686 x 10^3 kJ c. 4686 kJ d. 2.68 x 10^5 kJ e. 268 kJ

2 grams of a substance was dissolved in 75.0 g of water resulting in a temperature decrease from 23.1 ⁰C to 18.7 ⁰C. The specific heat of the solution is 4.18 J/g·⁰C. Calculate the amount of heat associated with the water.

Why do you think the soccer ball fell more slowly than the golf ball

Which of the following is an example of chemistry research in the main area of energy?. a. producing bioplastics. b. specific reactions between prescription drugs and chemicals in cells. c. developing rechargeable batteries. d.