B2O3 (s) + 3C (s) + 3Cl2 (g) - - - > 2 BCl3 (g) + 3CO (g) How many moles of chlorine are used up in a reaction that produced 0.35 kg of BCl3?

The temperature of a substance is a measure of the average Select one: a. attractive forces between its molecules b. mass of its molecules c. potential energy of its molecules d. kinetic energy of its molecules

Draw a sketch of a cross section of a graduated cylinder illustrating the proper method for reading the volume

If an athlete weighs 133 lb and has 15.0 % body fat by weight, how many pounds of fat does the athlete's body contain?

When does heat naturally move from cooler objects to warmer objects

What is the total number of atoms in the formula Ca (NO3) 2? (1) 7 (2) 2 (3) 3 (4) 9 The answer is 9 but I don't understand why, Can someone explain?

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.