BRAINLIEST BRAINLIEST BRIANLIEST BRAINLIEST!! 1. Naturally occurring chlorine that is put in pools is 75.53 percent of 35CI
(mass = 34.969 amu) and 24.47 percent of 37CI (mass = 36.966 amu).
Calculate the average atomic mass. (5 sig figs)

2. Calculate the average atomic mass of bromine. One isotope of bromine
has an atomic mass of 78.92amu and a relative abundance of 50.69%. The
other major isotope of bromine has an atomic mass of 80.92amu and a
relative abundance of 49.31%.(4 sig figs)
Please help me out!:(

1.aluminum chloride (alcl3), and sodium hydroxide (naoh) can react to form aluminum hydroxide (al(oh)3) and sodium chloride (nacl).    you have 13.4 g of aluminum chloride and 10.0 g of sodium hydroxide. answer the following questions: •what is the balanced equation for this reaction? •if you use all 13.4 g of aluminum chloride, how many grams of aluminum hydroxide can be formed? work must be shown to earn credit •if you use all 10.0 g of sodium hydroxide, how many grams of aluminum hydroxide can be formed? work must be shown to earn credit •how many grams of aluminum hydroxide will actually be made?     which reagent is limiting? explain your answer.

Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]

The fact that the total amount of energy in a system remains constant is a(n)