General Chemistry Answers

How many water molecules are impacted by a single water molecule?

Do you have any evidence that steroid biosynthesis occurs in microorganisms?

Write 50 word describing Henderson-Hasselbalch in chemistry.

what is configuration?

Calcium carbonate is the active ingredient in many antacid medications. An antacid tablet neutralizes 25.20mL of 0.50 mol/L Hydrochloric acid. What is the mass of the Calcium carbonate in the tablet (assuming this is the only ingredient that reacts with the acid)

A. 1.2g

B. 0.63g

C. 1.6 x 10⁴g

D. 6.2 x 10⁻³g

If 12gof sodium hydroxide was disolved in 100cm3 of water. What would be the concentration in mol/dm3 of the solution?

A solution is prepared by dissolving 1.00 grams of a base with an unknown composition (represented by generic formula: MOH) in 100.0 mL of water. A 25.0 mL sample of this solution is then neutralized by 15.85mL of 2.63 mol/L Hydrochloric acid. What is the molar mass of the unknown composition, MOH?

What amount of Magnesium hydroxide can be neutralized by 2.0mol of Hydrochloric acid? 

1.grams of calcium needed to form 150 grams of calcium hydroxide.

2.grams of water needed to form 150 grams of calcium hydroxide

3.grams of calcium hydroxide formed from 100 grams of calcium.

Having trouble finding the answers for these questions, Can you please help.

The concentration of CO2 in air can be determined by an indirect acid–base titration. A sample of the air is bubbled through a solution containing an excess of Ba(OH)2, precipitating BaCO3. The excess Ba(OH)2 is back titrated with HCl. In a typical analysis, a 3.5-L sample of air was bubbled through 50.00 mL of 0.0200 M Ba(OH)2. Back titrating with 0.0316 M HCl requires 38.58 mL to reach the end point. Determine the parts per million of CO2 in the sample of air, given that the density of CO2 at the temperature of the sample is 1.98 g/L.