In the formula 4H20, how many total hydrogen (H) atoms are there?

A) 2

B) 4

C) 8

D) 10

A student is given five samples and told they are lysine (an amino acid), lactose (a disaccharide), insulin (a protein hormone), RNA and fat. The samples are in test tubes marked 1-5, but the student doesn't know which compound is in which tube.

For real gases, how does a change in pressure affect the ratio of PV to nRT? a. The ratio decreases as pressure increases. b. The ratio increases as pressure increases. c. The ratio is constant at all pressures.

What is the volume, in milliliters, of 6.68 g of acetone?

How many grams of ca are needed to react completely with 2.20 L of a 4.50 m hcl solution

How many moles of KClO3 reacted if 9 moles of O2 were produced in this reaction: 2KClO3 → 2KCl + 3O2

Hi i need hel does any one know what P3N2 means?.-.

How does thermal energy transfer when a room is heated by a furnace?

De que está echo nuestro sol

Several steps are involved in the industrial production of sulfuric acid. One step involves the oxidation of sulfur dioxide gas to form sulfur trioxide gas. A catalyst is used to increase the rate of production of sulfur trioxide gas.

All energy waves other than the visible light spectrum cannot be seen. true or false