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anygoal [31]
3 years ago
5

DDT was a hazardous: a)insecticide b)disease c)industrial waste d)weed killer

Chemistry
2 answers:
Y_Kistochka [10]3 years ago
8 0
The answer I think is A
jenyasd209 [6]3 years ago
6 0
The answer is definitely C) industrial waste
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3.67  grams is the volume of the solution
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A neutral atom of beryllium (Be) has an average mass of 9 amu and 4 electrons. How many neutrons does it have?
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The answer is 5 subtract it
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PLEASE HELP ME!!! ASAP
shtirl [24]

Answer:

Theoretical yield of the reaction = 34 g

Excess reactant is hydrogen

Limiting reactant is nitrogen

Explanation:

Given there is 100 g of nitrogen and 100 g of hydrogen

Number of moles of nitrogen = 100 ÷ 28 = 3·57

Number of moles of hydrogen = 100 ÷ 2 = 50

Reaction between nitrogen and hydrogen yields ammonia according to the following chemical equation

N2 + 3H2 → 2NH3

From the above chemical equation for every mole of nitrogen that reacts, 3 moles of hydrogen will be required and 2 moles of ammonia will be formed

Now we have 3·57 moles of nitrogen and therefore we require 3 × 3·57 moles of hydrogen

⇒ We require 10·71 moles of hydrogen

But we have 50 moles of hydrogen

∴ Limiting reactant is nitrogen and excess reactant is hydrogen

From the balanced chemical equation the yield will be 2 × 3·57 moles of ammonia

Molecular weight of ammonia = 17 g

∴ Theoretical yield of the reaction = 2 × 3·57 × 17 = 121·38 g

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3 years ago
when riding bumper cars at the fair you bump into your friend and your car bounces backwards which law of motion is this
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Newton's third law of interaction, says that if one body exerts a force on a second body, the second body exerts a force equal in magnitude and opposite in direction on the first body. It's the law of action-reaction, and it helps to explain why you feel a jolt when you collide with another bumper car.

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Average atomic mass is the weighted average atomic masses with regard to the relative abundance of the isotopes 
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                                           = 6.941 amu
average atomic mass of Li is 6.941 amu
3 0
3 years ago
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