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colemanjosiah03
29.06.2019 •
Chemistry
Achart of ammonia production. a chemical engineer for a fertilizer company is determining the most efficient way to produce ammonia. the engineer carries out the haber reaction under four different conditions. according to these data, which procedure gave the greatest percent yield? f b g c h a j d
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Ответ:
a: 45.9 meters
b: 4.29 seconds
step-by-step explanation:
a: h(t)=1/2(-9.8)(3)^2+0(3)+90
h(t)=-4.9(3)^2+90
h(t)=-44.1+90
h(t)=45.9 meters
b: 0=1/2(-9.8)(t^2)+0t+90
0=-4.9t^2+90
-90=-4.9t^2
18.37=t^2
t=4.29 seconds
in the second question, the numbers aren't exact, but they're a close approximation.
Ответ:
Explanation:
A carbon-12 atom has a mass defect of 0.09564 amu. What is its nuclear binding energy? Round to 3 significant figures. x 10 J per carbon-12 atom
First use the formula;
1 amu =934 MeV
therefore 0.09564 will have
934 x 934
= 89.3 MeV