Which of the following describes the correct procedure to prepare 2.0 L of 0.50 M NH Br(aq)? (The molar mass of NH, Br is 98 g/mol.)
Choose 1
BO
Add 49 g of NH Br(s) to 2.0 L of distilled water.
Add 98 g of NH Br(s) to 2.0 L of distilled water.
MY
Col
Dissolve 49 g of NH Br(s) in a small amount of distilled water and dilute to 2.0 L.
SA
Dissolve 98 g of NH Br(s) in a small amount of distilled water and dilute to 2.0 L.

hurricanes form in warm water

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2

the right answer is c i just did the question.