General Chemistry Answers

Calculate the reaction entropy (S°rxn) for the following reaction: Si + 2 Cl₂ > SiCI₄

Using the standard reduction potentials, calculate the standard emf for each of the following

reactions: a. 2Al 3+ + 3Cd ⟶ 2Al + 3Cd 2+

b. Cr + 2Cr 3+⟶3Cr 2+

c. H2 + I2⟶ 2H + + 2I

One international nautical mile is defined as exactly 6076.1155ft and a speed of 1 knot is defined as one international nautical mile per hour. What is the speed in meters per second of a boat traveling at a speed of 14 knots?

Decomposition of mercuric oxide HgO to mercury Hg and Oxygen O2 gas, requires 87.1 Kj of heat

What volume will 200 ml of gas at 20 o C and 800 mm Hg occupy at STP?

A sodium atom has a mass of 22.99 u. Use Avogadro’s

constant and the conversion factor 1.661 3 10–24 g/u to

calculate the mass of 1.00 mol of sodium atoms.

A 2.9 g sample of a pure compound contains 0.050 mol of

the compound. Use this data to calculate the molar mass of

the compound.

Write the lewis structure for the ozone molecule, O3

a. The skeletal structure is

b. Draw the lewis structure

Write the lewis structure for the ozone molecule, O3

Analysis of a hydrocarbon showed that 7.8 g of the hydrocarbon contained 0.6 g of

hydrogen and that the relative molecular mass was 78. Find the molecular formula of the

hydrocarbon