Which of the following is a homogeneous mixture of two or more pure substances? Water alcohol coffee mercury

Carbon disulfide is prepared by heating sulfur and charcoal. The chemical equation is

How much energy is required to heat 32.5 g of water from 34°C to 75°C

How can you change the number of molecules in a chemical equation

When a soda can is dropped, it should not be immediately opened. Why? (A) The soda will squirt out because of decreased temperature. (B) The soda will squirt out because of increased temperature.

A baseball is traveling (+30m/s) and is hit by a bat, it leaves the bat traveling (-40m/s). What is the change in the velocity? Remember that direction is what makes velocity different than speed. (A. 10m/s) (B. 30m/s) (C. 40m/s) (D. 70m/s)

What does the dashes line represent? A. Medium B. Boundary C. Normal D. Incident Ray

Only a small amount of cerium oxide nanoparticles is needed because the nanoparticles ... 1) are elements 2) are very reactive 3) have a high surface area to volume ration

Describe the solubility of water compared to ethanol?

When the free-energy change (AG) of a reaction is negative, the reaction is said to be: Endergonic Non spontaneous Spontaneous Endothermic

The solubility of carbon dioxide gas in water can be increased by