What is the mass percent of nitrogen in the dyeing agent, picric acid (C6H3N3O7) ? (The molar mass of C = 12.01, H = 1.0079, N = 14.01, and O = 16.00.)

What do the formulas for table salt, NaCl, and water, H2O indicate about the compounds?

Aluminum reacts with hydrochloric acid to produce aluminum chloride and hydrogen gas. 2 al (s) + 6 hcl (aq) → 2 alcl3 (aq) + 3 h2 (g) what mass of h2 (g) is produced from the reaction of 1.35 g al (s) with excess hydrochloric acid?

What electron configuration does group 1 end in?

How many protons and electrons does an ion of Ca2 + have?

If the pressure exerted by a gas at 27.0 c in a vessel of volume 0.050 L is 4.00 atm, how many moles of the gas are pressure?

Which statement (s) is/are true of acid-catalyzed alcohol dehydrations? A) Protonation of the alcohol is a fast step. B) Formation of a carbocation from the protonated alcohol is a slow step.

Water is composed of hydrogen and oxygen, True Or False

Why must chromosomes be copied before cells divide

4) Terry's dog is racing down the lane in the part toward the east. The dog travels 36 meters in 18 seconds before it stops running. The velocity of the dog is. A. 2 m/s east B. 4 m/s east C. 8 m/s east D. 10 m/s east

When a unicellular organism grows, the number of its cells increases. (True or False)