Chemistry Answers

Mixing sodium bicarbonate and citric acid in a solution produce carbon dioxide that shows as fizz. Given the balanced reaction below, what is the amount in grams of citric acid should be added to 0.5 g sodium bicarbonate to have a complete reaction?

3 NaHCO₃ (aq) + C₆H₈O₇ (aq) ---> 3CO₂ (g) + 3H₂O (l) + Na₃C₆H₅O₇ (aq)

G: 0.5 g NaHCO₃

F: g of C₆H₈O₇

MM: 1 mol NaHCO₃ = 84.01 g NaHCO₃

1 mol C₆H₈O₇ = 192.12 g C₆H₈O₇

MR: 1 mol C₆H₈O₇ = 3 mol NaHCO₃

an aqueous solution has 0.0400 g of NaCI (solute) in 2.00 kg H20 (solvent).what is the concentration of solution in parts per million

if 0.650 solution of na2co3 will be use to precipitate ca+2 from solution, determin the amount of solution in grams needed to precipitate 5.00x102ml of 0.01120m ca+?(atomic mass:na=22.99 g/mol;c=12.01g/mol;0=16.00g/mol;ca=40.08g/mol;ans.91.3g

3.3 g of magnesium oxide are produced when 3.0 g of magnesium reacts with 5.0 g of oxygen gas. Calculate the percent yield of magnesium oxide produced.

A gas with a volume of 525 rnL at a temperature of �25°C is heated to 175°C. What is the new volume of the gas if pressure and number of moles are held constant

The initial temperature of a furnace is measured as 2450.00k.the temperature of furnace rises to 1/1*10 times of its initial value after an hour .what will be the increased temperature of the furnace n degree celsus

The results of a titration experiment we as follows:

Volume pf aqueous NaOH pipetted into conical flask = 10mL.

Molarity of dilute HCl = 1.196 M

(i) write the chemical reaction equation for the titration reaction.

(ii) calculate the number of moles of HCl added during titration

it requires two sticks of butter to make a batch of 20 cookies. how much butter will it take to make 150 cookies

A sample of cisplatin is 65.02% platinum, 9.34% nitrogen, 2.02% hydrogen, and 23.63% chlorine. Determine the empirical formula.

Solve: What is the volume of a container that can hold 0.50 mole of gas at 25.0°C and 1.25atm?

Given: V₁ = ?

n = 0.50 mole

T = 250C + 273.15= 298.15 K

P = 1.25 atm

R = 0.0821 L atm/ mol K