General Chemistry Answers

A balloon comma inflated in an air conditioned room at 30° , has a volume of 5.0 l period is heated to a temperature of 50 degrees . Which of the following is the new volume of the balloon a balloon, inflated in an air condition room at 33, has a volume of 5.0 l. It's needed to temperature 50 degree Read following is the new volume of the balloon if

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

A 42.1 g piece of metal alloy absorbs 181 J as its temperature increases from 25.0 C to 36.0 C. What is the alloy’s specific heat?

select atoms whose ions have an electron configuration of nd^6(n=3,4,5...).for example , the 2+ ion for V ends the electron configuration with 3d^6

check all that apply;

La

Os

Fe

Rh

Tl

Ti