Percent composition H2S2O8

AlCl3 and NaNO3 Balanced Equation Total Ionic Equation Net Ionic Equation

Changes in DNA are known as mutations and can be sometimes produce beneficial changes in population. A mutant form of the normally light-colored peppered moth is dark-colored.

Consider the balanced chemical reaction below. When the reaction was carried out, the calculated theoretical yield for water was 176 grams, but the measured yield was 148 grams. What is the percent yield?

Explain why an alloy is a type of solution. Why are alloys sometimes used instead of pure metals?

During a chemical change items are lost or gained to make new substance true or false

A compound contains 38.7% K, 13.9% N, and 47.4% O by mass. What is the empirical formula of the compound? A compound contains 38.7% K, 13.9% N, and 47.4% O by mass. What is the empirical formula of the compound?

A sample of an unknown compound was decomposed and found to be composed of 1.36 mol oxygen, 4.10 mol hydrogen, and 2.05 mol carbon.

When a transition metal reacts with chlorine, what types of bonds are formed between the two elements? A) ionic bonds B) covalent bonds C) transition bonds D) No bonds are formed.

How many grams of hcl are produced when 10.0 g of cl2 and 1.00 g of h2 react? h2 (g) cl2 (g) - - - > 2 hcl (g) ?

A person has a mass of 1000g and an acceleration of 20 m/s/s. What is the force on the person? A.) 20000 N B.) 2000N C.) 20N D.) 200N