General Chemistry Answers

What is the total number of moles present in a 52.0 gram sample of glucose, C6H12O6 (s)? (μc = 12.0 g/mol; μH = 1.0 g/mol; μo = 16.0 g/mol)?

What is the total number of moles present in a 52.0 gram sample of glucose, C6H12O6 (s)? (μc = 12.0 g/mol; μH = 1.0 g/mol; μo = 16.0 g/mol)?

The acid secreted by the cells of the stomach lining is a hydrochloric acid solution that contains 0.00774 mol of HCL pee 0.0500L of solution.What is the concentration of the solution 

Equal volumes,50.0 ml M ,of 0.54897solution of HCL and 0.9573 M NaOH solution having an initial temperature of 18.5 degree Celsius react in a coffee cup calorimeter.the resultant solution records a temperature of 22.9 degree Celsius.since the solution are mostly water,the solution are assumed to have a density of 1.0 g/mL and a specific heat of 4.184 J/g degree Celsius.The heat capacity of the calorimeter is 1.0 times 10 to power 1 J/degree Celsius.

Calculate the heat gained or released by the solution at constant pressure in J?

How would you prepare a solution containing 50mM NaCl (mwt = 58.5g/mol) and 10mM Na2HPO4 (358.057 g/mol) in a final volume of 250ml?         

An aqueous solution of ethylene glycol is 40.0% C2H6O2 by mass and has a density of 1.05 g/mL.

Determine the molality (m) of C2H6O2 in this solution. (past years 2020)

If 0.250 g of fuel increases the temperature of a calorimeter by 20 °C, and the calorimeter is calibrated at 7.28 kJ/°C, calculate the heat of combustion of fuel per gram. SHOW ALL YOUR WORK

1.In what phase is the substance at 50 °C and 1 atm pressure?

2.At what pressure and temperature conditions will all three phases of the substance be present?

3.What is the normal melting point of the substance?

4.What phase(s) will exist at 1 atm and 70 °C?

5.Label parts A, B, and C.

If the reaction of the 20grams calcium carbonate with an expected theoretical yield of 18grams calcuim oxide produced a yield percentage of 80%, what is the actual yield of CaO?

How many grams of sulfosalicylic acid are needed to prepare 1 liter of 3% solution?