3 different forms of pure carbon

How many milliliters of a 0.40 M solution of hydrochloric acid are necessary to neutralize 25 mL of a 0.20 M sodium hydroxide solution? a. 12.5 mL b. 50 mL c. 10.5 mL d. 25 mL e. 20 mL

When 2.56 g of a compound containing only carbon, hydrogen, and oxygen is burned completely, 4.89 g of CO2 and 3.00 g of h2o are produced. What is the empirical formula of the compound

For the following measurements, 27.5 x 0.125 x 13 = 44.6875, choose the answer that is rounded to the correct number of significant figures. A-40 B-45 C-44.7 D-44.69

How does adding oxygen (O2) to this reaction change the equilibrium? 2SO2 (g) + O2 (g) ⇌ 2SO3 (g) A. The equilibrium shifts right to produce more SO3 molecules. B. The equilibrium shifts left to produce more O2 molecules. C.

In the following reaction, what is the effect on the direction of the reaction if more SO3 is added to the reaction mixture?

Lead forms two compounds with oxygen. One contains 2.98g of lead and 0.461g of oxygen. The other contains 9.89g of lead and 0.763g of oxygen. For a given mass of oxygen, what is the lowest whole-number mass ratio of lead in the two compounds

How many liters of nh3 are needed to react completely with 30.0 l of no (at stp) ? 4nh3 (g) + 6no (g) → 5n2 (g) + 6h2o (g) ?

What is the valence number of lithium?

How do buffers affect the pH of a solution? I would greatly appreciate an answer to this question.

A gas occupies 900.0 ML at temperatures of 27.0 Celsius. What is the volume at 123.0 celsius