An element has 8 protons and 8 neutrons in its nucleus what is the atomic and mass number

The ray of light which travels towods a mirrors

A skeleton chemical equation includes which of the following

Give a reasonable, made up Barometric pressure for 5-mL of 3M HCl, 50-mL of H2O and a 1.6 cm Mg ribbon combined into a single liquid?

If you were to pour 4 different liquids into a glass and the liquids separated into 4 layers, which liquid would have the highest density? A. the layer at the top of the glass B. the third layer from the bottom of the glass C.

Write an equation that represents the action in water of perchloric acid as an Arrhenius acid.

How will you know whether a solution is saturated or supersaturated?

What is the number of moles of 27.6g of lithium?

Air is transferred from a 75 L tank where the pressure is 125 psi and the temperture is 288 k to a tire with a volume of 6.1 L and a pressure of 25 psi. What is the new temperture.

Which of the following is a measure of randomness in a system? A) entropy. B) kinetic energy. C) potential energy. D) chemical energy.

What substance can be broken down by chemical means? A) ammonia B) aluminum C) antimony D) argon (Castle learning question)