The mass of one mole of any substance:

A. is equal to 6.02 x 1023 g

B. is equal to the sum of the atomic masses of every atom in the formula

C. is the same for all elements but not molecules

D. is the same for all elements and molecules

You are given 230 grams of a substance with a half-life of 0.75 years. How much will remain after 3 years?

What elements are in group 1

Identify each definition that applies to the compound in red. Check all that apply. F-+HSO4-=>HF+SO4^2-

How do you draw the electronic dot diagram for methylcyclohexane?

What is 6421 in scientific notation

When a solution is considered to have a high concentration of hydrogen ions (H+) is also considered to be? a) acidic b) basic c) neutral d) hot

Why does the sky change colors at sunset? 1 because the sun changes colors 2 because the atmosphere reflects colors 3 because long wavelengths are scattered the least 4 because short wavelengths are scattered the least

Consider the reaction N2 (g) + 3 H2 (g) 2 NH3 (g), which is exothermic as written. What would be the effect on the equilibrium position of adding N2 (g) ?

According to Table I, which equation represents a change resulting in the greatest quantity of energy released? 1. 2C (s) + 2H2 (g) - > C2H4 (g) 2. 2C (s) + 3H2 (g) - > C2H6 (g) 3. N2 (g) + 3H2 (g) - >2NH3 (g) 4. N2 (g) + O2 (g) - > 2NO (g)

Calculate the number of liters in 3.25 g of ammonia