Other Chemistry Answers

Calculate the boiling point and freezing point of a 20% aqueous sucrose C12H22O11 (MM=342 solution

If 28.7mL of 0.205M KOH is required to completely neutralize 20.0mL of a HC2H3O2 solution, what is the molarity of the acetic acid solution?
HC2H3O2(aq) + KOH(aq) → KC2H3O2(aq) + H2O(l)

covalent bonding occurs between what types of atoms?

Suppose that the molar concentrations for CO and H2 at equilibrium are [CO] = 0.05 M and [H2] = 0.06 M.
Use the formula you found in Part B to calculate the concentration of CH3OH.

Formula from part B: Kc[CO][H2]^2

1. Calculate the no. Of grams of water that must be added to 16 grams of sugar in the preparation of 25% sugar solution
2. Calculate the grams of solute that must be dissolve in a. 350g of water in the preparation of 15% potassium sulfate solution b. 15g of water in the preparation of 10% sodium chloride solution

Plutonium-240 (Pu-240) is a byproduct of the nuclear reaction that takes place in a reactor. It takes one thousand years for 10.0% of a 4.60-g sample to decay.
A. What is the half-life of PU-240?
B. How long will it take to reduce a 2.00-g sample to 15% of its original amount?
C. What is the rate of decay of a 5.00-g sample in g/year?

A cyclopropane-oxygen mixture is used as an anesthetic. if the final pressure of cyclopropane in the mixture is 565 mmHg and the partial pressure of the oxygen is 1.55 atm, what is the total pressure of the mixture in kPa?

When heated at 405 C at 0.850 atm, ammonium nitrate decomposes to produce nitrogen, water and oxygen gases. using the ideal gas law equation, calculate the volume in milliliters, of water vapor produced when 85.0 g of NH4NO3 decomposes?

2 NH4NO3 (s) ---> 2N2 (g) +4 H2O (g) + O2 (g)

Why do particular combinations of atoms hold together, but not others?

On what basis can mixtures be classified as solutions, suspensions, or colloids?