Inorganic Chemistry Answers

What is the molality of a 10% by mass NaCl solution when used in qualitative determination of tannins in plants?

In analyzing the crude fiber content of a certain food, 0.313N NaOH is required. What is the mass of NaOH pellets needed to prepare 500ml of the solution? What is the molarity of the solution?

0.5 M KOH is one of the reagents needed in the qualitative determination of stimulant cathartic anthraquinone in plants. How many grams of KOH are required to prepare 1L solution? MW KOH = 56 g/mol

An isotonic saline solution was prepared by dissolving 0.92 g of NaCI in enough distilled water to make 100 ml solution. What is the percent by mass/volume of the solution?

How much salt and how much water must be mixed to make 250 g brine solution that is 50% salt by mass?

 How many electron in p subshell of Nitrogen have same spin? *

1 point

2

1

3

Calculate the concentration of lead ion in a saturated solution of lead chloride dissolved in 0.01 M NaNO3.  

Ksp of PbCl2 = 1.8 x 10 -4

Calcium cyanamide reacts with water to form calcium carbonate and ammonia. a.How many grams of H2O are needed to react with 75.0 g of CaCN2? b.How many grams of NH3 are produced from 5.24 g of CaCN2? c.How many grams of CaCO3 form if 155 g of H2O reacts?

What is the boiling point of a solution contains 0.058 mol of sucrose in 0.20 kg of water?

'Suppose you have a 0.10 M solution of AlBr3. What is the concentration of each ion?