Which of the following is a way to reduce our total energy use?

a) use energy more efficiently

b) get more heat energy from electrical devices

c) increase the amount of fossil fuels we use

2NO (g) + O2 (g) - - > 2NO2 How many moles of O2 are required to produce 46.0 g NO2? A. 0.500 mol B. 0.250 mol C. 1.00 mol D. 8.00 mol

4. If the heat of reaction is written on the reactant side of a chemical equation, what does that indicate about the reaction? ng It is an exothermic reaction. The energy of the products is less than the energy of the reactants.

Which answer choice best describes why the results of Ernest Rutherford's gold foil experiment led him to propose the concept of a nucleus? A.

The are of a rectangle is 12 in^2. what is the area in cm^2. there are 2.54cm in an inch.

Is the study and application of science to matters of law

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda