General Chemistry Answers

Calculate the mass of hydrogen peroxide needed to obtain 0.460 L of oxygen gas at STP

2H₂O₂ --------> 2 H₂O + O₂ 

A coffee-cup calorimeter is filled with 150.0 mL of water at 22.1 °C. A piece of metal at 121.4 °C with a mass of 16.5 g is added. The final temperature of the water and metal in the calorimeter is 24.5 °C. The density of liquid water is 1.00 g/mL, and its specific heat capacity is 4.18 J/(g·°C). Determine the specific heat capacity of the metal. Identify the metal that this may be.

Molar Mass Al = 26.98 grams/mole

Molar Mass HCl = 36.46 grams/mole

Molar Mass AlCl₃ = 133.33 grams/mole

Molar Mass H₂ = 2.02 grams/mole

How many grams of AlCl₃ will be made if you fully react 93 grams of HCl?

Step 1: Convert grams of HCl to moles of HCl

Step 2: Convert moles of HCl to moles of AlCl₃

Step 3: Convert moles of AlCl₃ to grams of AlCl₃

What is the Law of Conservation of Mass

34g S + ?g O = 2.0g S + 96g So4

If the density of a gasoline is 0.703g/mL and you consume 65 litres of gasoline in a week, what is the amount of CO^2 that you will produce in a year. Express your answer in metric tonnes and kilograms. The molecular formula of the compound comes from the first part of the question

Performance

What to do:

1. Look for at least two examples of covalent compounds found in the

environment. 2. Write a brief explanation about the covalent compounds.

3. Write the chemical formula and name of the chemical compound.

4. Draw the structure of the compound

Test the following mathematical relationships to see

which gives a constant value:

1. [Fe3+(aq)][SCN–(aq)][FeSCN2+(aq)]
2. [Fe3+(aq)] + [SCN–(aq)] + [FeSCN2+(aq)]
3. [FeSCN2+(aq)] / [Fe3+(aq)][SCN–(aq)]
4. [Fe3+(aq)]/[FeSCN2+(aq)]
5. [SCN–(aq)] /[FeSCN2+(aq)]

(b) Describe this relationship in words.

A cylinder contains 400g of oxygen and 600g of helium at a total pressure of 7.0 atm. Calculate partial pressures of the gases.

Answer to Question #243834 in General Chemistry for Megan

A solution contains 1.569mg of CoSO4(155.0g/mol)per mL. Calculate

a) the volume of 0.007840M EDTA needed to titrated a 25.00mL aliquot of this solution

Calculate the specific volume of normal butane at a pressure of 80 bar and a temperature of 227° C is desirable as follows:

1, the ideal gas equation

2, the compressibility coefficient of the Peters method

3, virial equations up to a factor of two

4, Redlish Quang equation