What must be balanced in order to have a balanced chemical equation?

Which pair below describes isotopes of the same element? A. an atom 6 protons and 8 neutrons - an atom with 8 protons and 6 neutrons B. an atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons C.

Sodium bicarbonate reacts with sulfuric acid to form sodium sulfate, carbon dioxide, and water. calculate the mass od sodium bicarbonate necessary to produce 1.75 g of carbon dioxide gas. How would i even go about doing this?,

Will upvote! A chemical reaction in which one element replaces another element in a compound can be categorized as a combustion reaction. decomposition reaction. single displacement reaction. double displacement reaction.

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What is the correct classification of a mixture in which both a solid and liquid are visible? 1: a homogeneous mixture and a solution 2: a homogeneous mixture and a suspension 3: a heterogeneous mixture and a solution 4: a heterogeneous mixture and

What kind of group 1 atoms are the most reactive? a. Small atoms c. Atoms with the most electrons in the valence level b. Large atoms d. Atoms at the top of the periodic table

What does it mean when there are 2.3 x 10-4 moles?

Electric force is an A. attraction and repulsion between protons and electrons . B. attraction and repulsion between protons and neutrons. C. attraction and repulsion between neutrons and electrons.

A salt crystal has a mass of 0.18 mg. how many nacl formula units does it contain?

Which of the following is easist to accelerate? A. bowling ball B. tennis ball C. golf ball D. ping pong ball