What is the value of in a spontaneous reaction?

Which of the following salts is the least soluble in water? A.) Strontium Phosphate B.) Mercury Bromide C.) Thallium (I) Sulfide D.) Silver Bromide E.) Copper Iodide F.) Silver Arsenate

Which of the following electromagnetic waves has the highest energy? a. ultraviolet waves b. infrared waves c. microwaves d. radio waves

What is the correct name for SO3?

Which statement is true according to the kinetic theory? Molecules of different gases with the same mass and temperature always have the same average density.

What constitutes a positive test for ammonia?

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.

A gas is sealed in a bottle at 25°C and 1.50 atm pressure. How must the storage conditions be changed to bring the gas to Standard Temperature and Pressure (STP) ? A. Increase the temperature by 25°C and decrease the pressure by 0.514 atm. B.