The main substances in air are N2 (nitrogen), O2 (oxygen), CO2 (carbon dioxide), H2O (water), and Ar (argon). Which of these substances are elements? Which are compounds? Which are molecules?

When energy is added whitch bond is created. atp, adp, or amp?

A food product contains 15 g of carbohydrates, 5 g of protein and 4 g of fat. How many calories are in one serving of this product?

Which one is denser? question 2 options: the earth (a solid object) the sun, which is about 300,000 times more massive than the earth mars jupiter?

The force that is expanding the universe at its present rate is called

A similar experiment was used to determine the empirical formula of an oxide of tin (Sn). Use the data provided to answer the following question. Calculate the number of moles of oxygen in the oxide of tin sample. 0.0356 moles 0.131 moles 0.

What is litmus paper used for? To indicate if all the reactants have been used up to determine if a chemical reaction has occurred to determine pH to detect the presence of water

You open your lemonade stand with 100 lemons, 5 bags of sugar containing 6 cups each, and 10 gallons of water (16 cups per gallon). Which statement is NOT true about the production of lemonade in your stand?

For the complete combustion of 5.6dm3 of a gaseuos hydrocarbon CxHy. 28.0dm3 of oxygen gas were used, 16.8dm3 of CO2 gas and 18.0gof liquid water were produced all gases measurement were made at stp. Determine the chemical formula of the hydrocarbon

What kind or plate tectonic boundary is the san anfreas fault?

What is it called when the state of matter that keeps its shape and volume when it's placed in a different container