General Chemistry Answers

Label the parts of heating and cooling curve

Determine the Weight f the Sample, if

it Used 24.9ml of 0.1Normal Sodium

Hydroxide of Titrant {33.29% of

Busulfan (C7H6O2)} with solution

Determine the Weight f the Sample, if it Used 24.9ml of 0.1Normal Sodium Hydroxide of Titrant {33.29% of Busulfan (C7H6O2)} 

A is a solution of 0.01molperdm³, HCL.

B is a solution of sodium hydroxide

I. Calculate the average titre value

II. Calculate the concentration of B in mol/dm³

III. Concentration of B in grams per dm³

IV. The number of moles of acid in average titre

V. The number of moles of alkaline in the volume of B pipette .

Who dissolve faster oxygen + water at 1 atm or oxygen + water at 2 atm? Explain your answer.

What mass of BaCl2 is needed to dissolve in 1.2 kg water to prepare 0.500m BaCl2 solution?

The titration of 22.30 mL

mL of HCl

HCl solution of unknown concentration requires 12.96 mL

mL of a 0.200 M

M NaOH

NaOH solution to reach the equivalence point. What is the concentration of the unknown HCl

HCl solution in M

M?

Express your answer in moles per liter to three significant figures.

in the BaCI2 (aq)+Na2SO4(aq)Ba

If 0.590% solution of Na²CO3 will be used to precipitate Ca+² from solution, determine the amount of solution, in grams, needed to precipitate 5.00×10²mL of 0.01120 M Ca+²? Atomic mass: Na=22.99 g/mol C=12.01 g/mol Ca=40.08 g/mol

Rust (iron(III) oxide) is formed by the reaction

of oxygen with iron.

4Fe(s) + 302 (g)

> 2Fe2O3 (s)

a. Calculate the mass of oxygen required to

react with 10.0 g of iron.