When magnesium (mg) metal is placed in hydrochloric acid (hcl), it forms magnesium chloride (mgcl2) and a gas. what gas is formed in this reaction?

If an element has 4 protons and 5 neutrons its mass number is

List the 3 particles that make up an atom.

Which term best describes the type of reaction that happens when a single element reacts with a molecule or compound producing a new single element and a new molecule or compound?

For this ionic compound, what would be the name of the anion? Ca (NO3) 2 A. nitrite B. nitrate C. calcite D. sulfate

Are there molecules of sodium chloride within a sodium chloride crystal?

How to solve determine the final temperature when 450.2 grams of aluminum at 95.2°c is placed in an insulated calorimeter with 60.0 grams of water at 10.0°c?

Which of the following is true about a scientific hypothesis? A. The hypothesis must form a scientific theory. B. The hypothesis must be testable. C. The hypothesis must predict the outcome of the experiment. D.

Convert 1.76 um to inches

Why is lewis electron-dot diagrams more suitable than electron-shell diagrams illustrating chemical bonds

What mass of sodium benzoate should be added to 150.0 ml of a 0.15 m benzoic acid solution in order to obtain a buffer with a ph of 4.25? (assume no volume change.) ?