Determine the number of significant figures in each of the following measurements

A). 11 soccer player

B). 0.070020 meter

C). 10,800 meters

D). 0.010 square meter

E). 5.00 cubic meters

F). 507 thumbtacks

What is the heat content, q, of the reaction when glucose burns? q = 0 q > 0 q < 0 q ≥ 0

Oxygen always has an oxidation number of - 2 unless it is combined with fluorine or found in the compound peroxide. When in the compound peroxide, it has an oxidation number of?

If 25.0 g of water at 21c is mixed with 45.0 g of water at 75c, what is the final temperature of the mixture? a. 40c b. 48c c. 56c d. 63c e. 38c

13._SeClo + _02 → _SeO2 + _Cl2

What are some Physical changes for baking cookies

Which of the following best describes what causes the phases of the moon? The alignment of the sun, Earth, and moon The speed of the moon around the Earth The speed of the Earth around the sun The alignment of the planets

At which temperature would atoms of a He (g) sample have the greatest average kinetic energy? (1) 25°C (3) 273 K (2) 37°C (4) 298 K

In the reaction, HCl + H2O produces H3O + Cl, what is the conjugate acid

Draw the curved arrow mechanism for the conversion of aniline into benzenediazonium ion, and draw the final product that forms after the benzenediazonium ion is treated with

Sodium chloride is stirred into water to form a solution. in this case, what are sodium chloride and the water?