Which of the following equations has correct formulas and also is a balanced equation?

a. CaCO3 - > CaO + CO3

b. 3KCl + HNO3 - > 3HCl + KNO3

c. 2Be + O2 - > 2BeO

d. Mg + O2 - > MgO2

1. Which process uses oxygen? photosynthesis or cellular respiration 2. Which process uses carbon dioxide? photosynthesis or cellular respiration 3. Which process produces oxygen? photosynthesis or cellular respiration 4.

What state of matter has a fixed amount of volume but can change shapes according to its container?

In a balanced chemical reaction which of the following is true? The products will weigh more than the reactants. The reactants will weigh more than the products. The mass of the products depends on whether they are gases or not.

How many atoms are in 5.40mol of iron

Which best describes nuclear fusion? A nucleus spontaneously splits and absorbs energy. Two nuclei spontaneously combine and absorb energy. A nucleus collides with a neutron and splits, releasing energy.

Which statements accurately describe the greenhouse effect? Check all that apply. It is caused by liquids on Earth's surface. It is caused by gases in Earth's atmosphere. It warms up Earth's surface and the lower atmosphere.

How is geothermal produced

B2O3 (s) + 3C (s) + 3Cl2 (g) - - - > 2 BCl3 (g) + 3CO (g) Calculate how many moles of BCl3 are produced from the reaction of 61.0g of B203? A. 1.75 mol B. 0.0150 mol C. 51.3 mol D. 211 mol

A gas has a volume of 10 L at 0 C what is the final temperature of the gas if it volume increases to 25L

Are specimens the best source of DNA