Chemistry, 25.04.2020 01:42 stotherow5
Write the chemical equation for the single replacement reaction where aluminum metal reacts with hydrochloric acid to form aluminum chloride and hydrogen gas. (5 pts)
(I already did this part)
Al2 + 2HCl___ → ___2AlCl___ + H2___
(I need help with this part)
Calculate how many liters of H2 gas at STP are produced from 2.11 moles of aluminum metal.
Answers: 3
Chemistry, 22.06.2019 05:30
A3.37-mg sample of protein was chemically digested to convert its nitrogen into ammonia and then diluted to 100.0 ml. then 10.0 ml of this solution was placed in a 50-ml volumetric flask and treated with 5 ml of phenol solution plus 2 ml of sodium hypochlorite solution. the sample was diluted to 50.0 ml, and the absorbance at 625 nm was measured in a 1.00-cm cuvette and found to be 0.486. for reference, a standard solution was prepared from 10.0 mg of nh4cl (molar mass = 53.49 grams/mole) dissolved in 1.00 l of water. then 10.0 ml of this standard was placed in a 50-ml volumetric flask, treated in the same manner as the unknown, and the absorbance found to be 0.323. finally, a reagent blank was prepared using distilled water in place of unknown, it was treated in the same manner as the unknown, and the absorbance found to be 0.076. calculate the weight percent of nitrogen in the protein.
Answers: 1
Chemistry, 22.06.2019 12:10
Consider the reaction: n2(g) + o2(g) ⇄ 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?
Answers: 3
Chemistry, 22.06.2019 17:30
A650 ml sodium bromine solution has a bromide ion concentration of 0.245 m. what is the mass (g) of sodium bromide in solution? a) 103.b)0.00155.c)16400.d) 16.4.e) 0.159
Answers: 2
Write the chemical equation for the single replacement reaction where aluminum metal reacts with hyd...
Mathematics, 21.09.2019 03:00
Mathematics, 21.09.2019 03:00
History, 21.09.2019 03:00
Business, 21.09.2019 03:00
Mathematics, 21.09.2019 03:00