An item is regularly priced at $70. it is now priced at discount of 20% off the regular price. what is the price now?

Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3 (is). The equation for the reaction is 2 KClO3 ⟶ 2 KCl + 3 O 2 Calculate how many grams of O 2 (g) can be produced from heating 66.1 g KClO 3 (s).

When can a hypothesis be elevated to the status of a theory? a) when it is validated by an experiment b) when data gathered from an experiment precisely fits predictions c) when it can be proved to be true d) when it meets the test of repeated

A piece of metal ore weighs 8.25 g. when a student places it into a graduated cylinder containing water, the liquid level rises from 21.25 ml to 26.47 ml. what is the density of the ore? 0.312 g/ml 1.58 g/ml 3.21 g/ml 0.633 g/ml

Aspirin is the analgesic acetylsalicylic acid C9H8O4. What is the coefficient of aspirin in the balanced equation for the combustion of solid acetylsalicylic acid to carbon dioxide and liquid water?

What is the difference between thermal energy, temperature, and heat

For the reaction C2H5OH + O2 - - > 3CO2 + 3H2O delta H = - 2434 kJ/mol. Is this an exothermic or endothermic reaction?

A liquid used to dissolve a solid is referred to as: a catalyst a solvent an inhibitor an indicator

Write a balanced equation to show the reaction of sulfurous acid with caesium hydroxide to form water and caesium sulfite.

In the human body, a series of chemical reactions results in the making of energy that is used at both the cellular and organismal levels.

What causes the earths crust to spread