A scientist observes that an unknown solution turns blue Litmus paper red and reacts with zinc to produce hydrogen gas. Which of the following best describes the unknown solution. A. a colloid

B. an acid

C. a base

D. a suspension

Give another mixture of liquids that is separated on an industrial scale by fractional distillation.

2 (NH4) 2Cr2O7 how many atoms

The Ksp for CdF2 is 6.4 x 10-3. What is the concentration of Cd2 in a solution that is saturated in CdF2. When a solution is saturated it has reached equilibrium. g

Consider the balanced chemical reaction below. when the reaction was carried out, the calculated theoretical yield was for carbon dioxide was 546 grams, but the measured yield was 483 grams. what is the percent yield? Fe2O3 + 3CO = 2Fe + 3CO2

In the reaction MgCI2 + 2KOH - > Mg (OH) 2 + 2KCI if 6 moles MgCI2 are added to 6 miles KOH which is the limiting reagent

Why are the atomic masses for most elements not whole numbers?

An aqueous solution is 0.387 m in hcl. what is the molality of the solution if the density is 1.23 g/ml?

Carbon monoxide reacts with oxygen to form carbon dioxide. 2 CO (g) + O2 (g) → 2C02 (8) In a 1.00 L flask, 3.40 atm of CO reacts with 2.60 atm of O2. Assuming that the temperature remains constant, what is the final pressure in the flask? 4.30 atm 2.

The nerves that Branch out from the spinal cord and connect to the body

The term southern oscillation most nearly refers to