How many elements are in 2CaCO2 and C8H10N4O2

In one bottle you have a mixture of oxygen and hydrogen. In a second one is water. Do they have the same energy? How do you know which one is a fuel and which is not?

What is the percentage composition for hydrogen in the compound c2h4

Calculate the molarity of the two solutions. 0.650 mol of naoh in 2.65 l of solution.

Explain why the pattern of differences that exists from earlier to later fossils in the fossil record supports the idea that evolution has taken place on Earth

The complete combustion of 0.521 g of a snack bar in a calorimeter (Ccal = 6.15 kJ/°C) raises the temperature of the calorimeter by 1.29 °C. Calculate the food value (in Cal/g) for the snack bar.

Classify each of the following as a suspension, solution, or colloid. - suspension - solution - colloid A. gasoline B. blood C. mud

What are similarities between beta decay and alpha decay

Suppose there is a decrease in the price of corn. If corn is an input into the production of ethanol, we would expect the supply curve for ethanol to a. shift rightward. b. shift leftward. c. become flatter. d. remain unchanged.

Explain why conductors and insulators are both required to construct the electrical wiring in your home

Calculate e0 for the spontaneous reaction when an ag+/ag half-cell (anode) is joined to an hg2+/hg half-cell (cathode).