Which of the following is a balanced chemical equation?

A H, 0, - H40-0,

B. 2Fe:0, + 3C 4Fe + 3C0,

C. $0 + 0 + 2H, 0 + 4H SO.

D. 2 Mg + HCl → MĘCl + H,

If 4.1 L of gas at 22 degrees celsius is heated to 52 degrees celsius, what would the final volume be?

Is a Big Mac an element, compound, or mixture?

Provide the mass number of Fe, which has 29 neutrons

If a measurement is recorded as 1.2 cm, what is the smallest marking on the instrument?

Boiling water produces gas bubbles. Is this evidence of a chemical reaction? Yes or no?

There are seven major levels of classification. Kingdom and Phylum are just two of the levels. Which of the following are also major levels of classification? Choose all answers that are correct. A. Class B. Order C. Family D. Level

An experiment with high validity is

What is the smallest part of a tree that can do all the things needed for life?

As the PH scale decreases or increases, how does this affect the acidity?

During an endothermic phase change, what happens to the potential energy and the kinetic energy? Potential energy stays the same, and kinetic energy increases. Potential energy increases, and kinetic energy increases.