Methane and carbon dioxide gas are two harmful greenhouse gases. identify two sources of these gases and discuss what society can do to reduce their impact on the environment.

Two major source of methane are –  

a)Burning of fossil fuels

b)Natural wetlands

Two major source of carbon dioxide gas –  

a)Release from ocean  

b)Respiration

Measures taken by society to reduce the impact of carbon dioxide and methane

a)   Plantation

b)  Reduction of green house gases

c) Sustainable practice

Explanation:

Two major source of methane are –  

a)Burning of fossil fuels

b)Natural wetlands

Two major source of carbon dioxide gas –  

a)Release from ocean  

b)Respiration

Measures taken by society to reduce the impact of carbon dioxide and methane

a)Plantation – This will help in reducing the adverse impacts of CO2 and methane gas.  

b)Reduction of green house gases - Reducing the use of machine , equipment’s and mode of transportation that further intensifies the problem of green house gases.  

c) Sustainable Practice - Sustainable technologies for energy  and goods production must be promoted.

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter  

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