Do all living things give off co2?

When electrical energy is "used" by an electric light, what really happens to the energy? It changes to matter. It is given off as other forms of energy. It stops at the electric light. It disappears.

What parts of a circuit is a conductor?

The first step of the scientific method is To identify this

How many moles of water, H2O, contain 2.0*1022 molecules of water? (See the hints for assistance in interpreting scientific notation.) Express the quantity in moles to two significant figures.

How can one increase the rate of a chemical reaction? a. Decrease the concentration of the reactants. b. Add a catalyst. c. Increase the activation energy needed. d. Increase the entropy of the reactants. e. Cool the reactants.

How many electrons are in the second energy level of an atom of each element? A. Chlorine B. Phosphorus C. Potassium

Which of the are not true in regarding to atomic raqdii of main group elements. a. Atomic radii generally increase as you move from left to right across a period b.

At constant pressure, the combustion of 5.00 g of c2h6 (g) releases 259 kj of heat. what is δh for the reaction given below? 2 c2h6 (g) + 7 o2 (g) → 4 co2 (g) + 6 h2o (l).

Express the value of exactly 15 centimeters to three significant figures.

A solution is made by completely dissolving 90. grams of kno3 in 100 grams of water in a beaker. the temperature of this solution is 65 degrees celsius.