Inorganic Chemistry Answers

Suppose 4.00 grams of H2 were used?how many grams of water would be produced?

A cache of Hebrew manuscripts known as the Dead Sea Scroll was found in 1947. The specific activity of Carbon-14 in the linen wrappings of the book of Isaiah was about 0.200 disintegration per second per gram (dps g-1.). Carbon-14 in living materials has

a specific activity of 0.255 dps g-1. The half-life of Carbon-14 is

5.73 x103 years. Carbon-14 decay by First order rate law. Calculate the approximate age of the linen.

______________3. An oxide of chromium is made up of 5.20 g chromium and 5.60 g

oxygen What is the empirical formula of the oxide? (Note: An oxide of nitrogen

contains 63.1% oxygen and has a molar mass of 76.0 g/mol.)

______________4. What is the empirical formula for this compound?

______________5. What is the molecular formula of the compound?

Determine the boiling point and freezing point of the following solutions:

5.00g caffeine (C8H10N4O2) and 250.0 ml water.

0.300 kg chloroform (CHCl3) and in 21.0 g eucalyptol (C10H18O).

Determine the osmotic pressure of the solution made by dissolving 25.0 g of sodium chloride in 2.0 L of solution at 25 0C.

Reserpine is a natural product isolated from the roots of the shrub Rauwolfia serpentine. It was first synthesized in 1956 by Nobel prize winner R.B Woodward. It is used as a tranquilizer and sedative. When 1.00g reserpine is dissolved in 25.0g camphor, the freezing point depression is 2.63 0C. Calculate the molality and the molar mass of reserpine.

A cache of Hebrew manuscripts known as the Dead Sea Scroll was found in 1947. The

specific activity of Carbon-14 in the linen wrappings of the book of Isaiah was about

0.200 disintegration per second per gram (dps g-1.). Carbon-14 in living materials has

a specific activity of 0.255 dps g-1. The half-life of Carbon-14 is

5.73 x103 years. Carbon-14 decay by First order rate law. Calculate the approximate

age of the linen

if theres 180 grams of ci2 how many moles of FeCl3 can be produced?

1.Calculate the Molarity of a solution that contains 20.0 g NaCl in 0.30 L of solution.

2.Calculate the mass in grams of lithium nitrite of 120. mL of 0.500 M solution.

Describe how to prepare the solution.

3 Write the molecular, ionic and net ionic equations for the reactions in 26 and 27 between the following. If

there is no net ionic equation, write “no net ionic equation”:

potassium carbonate and sodium nitrate

Which of the following 1.00 m solutions has the highest boiling temperature?

a) Na2S

b) LiNO3

c) (NH4)3PO4

d) sucrose

Of the following solutions, ................ has the highest freezing temperature and

.................... has the lowest freezing temperature? Your answer should include two

letters in the correct order.

a) 5.0 m KCl

b) 3.0 m LiNO3

c) 2.0 m (NH4)3PO4

d) sucrose

30 .......................The freezing point depression constant, Kf of H2O = 1.86 oC/ m-1

The boiling point elevation constant, Kb of H2O = 0.52 oC oC/ m

Calculate the boiling temperature of a solution of 2.00 m AlCl3

1. explain the industrial application of double alkali solution.
2. why do we use two indicators in double alkali(i-e phenolphthalein and methyl orange)