Answer:
Explanation:
First reaction gives you the number of moles or the mass from Carbon and hydrogen
for carbon:
Analogously for hydrogen:
0.0310g
have 0.0034gH or 0.0034mol of H
In the second reaction you can obtain the amount of nitrogen as a percentage and find the mass of N in the first sample.
now
this is equivalet to 0.002mol of N
with this information you can find the mass of oxygen by matter conservation.
this is equivalent to 0.004molO
finally you divide all moles obtained between the smaller number of mole (this is mol of H)
and you can multiply by 5 to obtain:
We have to know how urbanization causes pollution.
The reason is: People in urban areas consume more energy, food, and water.
Urbanisation is one of the major problem towards pollution. The smoke from automobiles, factories and power generators make air unhealthy. Also chemical spills and other toxic gases contaminate in air.
The mixing of toxins in the soil is polluting soil which disturbs eco-system.
The high density population in urban area consume more energy , food and water which causes pollution.
Answer:
Explanation:
Efficiency of the electric power plant is 
Here Temperature of hot source 
and Temperature of sink 
Hence the efficiency is 
Now another formula for thermal efficiency Is
Here QI is the of heat taken from source 100 MJ ; Q2 of heat transferred to the sink (river) to be found
W is the of work done and W = QI -Q2
Hence From
Hence the of heat transferred to the river Is 
Answer:
because plants have energy in them from the sun and
Answer:
Chlorine gas.
Explanation:
Hello!
In this case, the undergoing chemical reaction is:
Thus, given the moles of reacting both sodium and chlorine, we compute the moles of sodium chloride yielded by each reactant by considering the 2:2 and 1:2 mole ratios:
Thus, since chlorine yields less moles of sodium chloride, we infer it is the limiting reactant.
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