General Chemistry Answers

A 25.5g sample of X combines with 52.5g sample of Y to form the compound XY3. What are the masses of products and reactants?

Solution A: Nanoparticles at 10mg/ml (1.3x10^12particles/ml) Solution B: 150 kDa Antibody at 12uM Solution C: Diluent solution Solution D: Sample And I told you I wanted to perform an experiment in which 5ul of the sample that we are testing is incubated in a solution containing 250pM Nanoparticles, 600nM antibody, and is at least 30% diluent solution, and had a final volume less than 12ul. How would you setup this incubation?

a patient in a hospital is often administered an intravenous (IV) drip contains an aqueous solution, this aqueous solution contains 0.85% (mass by volume) of sodium chloride or 5% (mass by volume) of glucose. calculate the molarity of both these solution.

You are provided with a mixture of solid barium sulphate and sodium. Suggest apoaratus and chemicals which you will use in obtaining the pure solid sample of sodim choride

Give the period and group number for iodine, and identify it as a representative or transition element:

In the following chemical equation, find the mass of o2 required to react completely with a 20g sample of 80% purity by mass c6h12o6.

Determine the density of sulphur dioxide , SO2 gas in g/L at 25 deg C and 100 kPa 

Ca2 + 2HCO3- =_____________ + H2O CO2

Methane, CH4, gas can be made in small quantities by the reaction shown below.

Al4C3(s) + 12 H2O (l)→ 4 Al(OH)3 (aq) + 3 CH4(g)

Determine the volume of methane gas that will be produced at SATP( 0 deg C and 100 kPa) when 1.73 grams of aluminum carbide, Al4C3 completely react with water? ( 6 marks) ( universal gas constant= 8.314 Kpa. L mol-1 K-1)

Determine the density of sulphur dioxide , SO2 gas in g/L at 25 deg C and 100 kPa