A teniss ball has more mass than a gold ball because

An atom that has the same amount of atoms of each element on both sides of the reaction obeys what law

Read the list of elements given below. He, Ne, Ar, Kr Which of the following about the elements is true? All of them are unreactive gases. All of them are reactive metalloids. He and Ne are unreactive gases and Ar and Kr reactive metalloids.

Does smoke form a cloud?

Why do all organic compounds contain carbon?

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. Al (OH) 3 + H2SO4 → Al2 (SO4) 3 + H2O The table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory.

Explain an example of a chemical bond

What is the oxidation number of chlorine

What is a triglyceride? Draw the skeletal structure for a saturated triglyceride whose hydrocarbon tails each contain six carbons.

A 500 g block of metal absorbs 5016 J of heat when its temperature changes from 20.0 ⁰C to 30.0 ⁰C. Calculate the specific heat of the metal.

When delta h is negative the reaction will be endothermic?