A student is testing water to know which is best foe cleansing purposes with soaps. He would find that the cleansing action of soaps is best when he uses water obtained from

Dextrose 25% 1000 ml was ordered, you have only dextrose 70% solution available. how much of the dextrose 70% solution and sterile water will you use to fill this order?

Calculate the ph of the resulting solution if 27.0 ml of 0.270 m hcl (aq is added to 37.0 ml of 0.270 m naoh (aq

A 75.0 mL 75.0 mL aliquot of a 1.70 M 1.70 M solution is diluted to a total volume of 278 mL. 278 mL. A 139 mL 139 mL portion of that solution is diluted by adding 165 mL 165 mL of water.

An atom of the isotope sulfur-31 consists of how many protons, neutrons, and electrons? (p = proton, n = neutron, e = electron)

A compound is 54.53% C, 9.15% H, and 36.32% O by mass. What is its empirical formula?

On a separate sheet of paper, write the formulas for each of the following, complete and balance 1. iron + copper (II) sulfate 2. potassium chloride + mercury (I) sulfate 3. sulfur + oxygen

Match the substance with its chemical formula. 1. H + hydroxide ion 2. H3O + hydronium ion 3. OH - hydrogen ion

Which of those molecules are polar. Co2, So2, CH2Cl2, PCl3

A chemical spill gets into the soil and effects the plants within a forested ecosystem. explain why the top predators would be most affected by this

If the heat released during condensation goes only to warming the iron block, what is the final temperature (in ∘C∘C) of the iron block? (Assume a constant enthalpy of vaporization for water of 44.0 kJ/molkJ/mol.)