What is an example of society positively influencing science? the invention of the cotton gin increasing the need for slaves. people rejecting the heliocentric theory introduced by copernicus. people speaking out against animal testing that lead to the invention of artificial tissue. companies that use technology in place of humans creating fewer jobs for people.

"Companies that use technology in place of humans creating fewer jobs for people" is an example of society positively influencing science.

Option D

Explanation:

The society is positively influencing the science by raising issues that practising research and analysis on animals is cruel and question humanity. So the campaign like PETA has been established which convey society that animal suffering is similar to human suffering.

Researchers are finding alternatives like using 3D print cells which can be developed in a laboratory to originate living structures. This is done to utilize materials rather than livings and such initiatives can eliminate the process of animal testing.

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