Ascientist made careful measurements of the pressure and temperature of many different gases. based on these measurements, he concluded that "the pressure of a fixed amount of gas, measured at constant volume, is directly proportional to its absolute temperature." this statement is best described as a
a. theory.
b. hypothesis.
c. law. page 13
d. experiment.
e. definition.

C. Law

Explanation:

The answer is that the statement is known as a law.

The options theory and hypothesis are both incorrect, because those words describe a viewpoint of a person, and that viewpoint can be challenged, however the statement is something that can be observed by anyone who does that experiment.

The options of experiment and definition are incorrect because it is an observation, and not a definition. The experiment is the actual process of conducting tests to find this outcome.

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