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dmitriy555 [2]
3 years ago
7

What is a catalyst?what is the catalyst used for manufacturing ammonia?

Chemistry
1 answer:
Anastaziya [24]3 years ago
3 0

Answer:

finely divided iron is used as catalyst in the manufacture of ammonia by haber's process

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Explain how to convert a mass of compound A to a mass of compound D in words with no equations using the following reaction 2A +
leonid [27]

Answer:

Explanation:

The given reaction equation is:

                2A + 4B → C + 3D

We know the mass of compound A in the reaction above. We are to find the mass of compound D.

We simply work from the known mass to calculate the mass of the unkown compound D

Using the mole concept, we can find the unknown mass.

Procedures

  • We first find the molar mass of the compound A from the atomic units of the constituent elements.
  • We then use the molar mass of A to calculate its number of moles using the expression below:  

            Number of moles of A = \frac{mass of A}{molar mass of A}

  • Using the known number of moles of A, we can work out the number of moles of D.

           From the balanced equation of the reaction, it is shown that:

         2 moles of compound A was used up to produced 3 moles of D

  Then \frac{3}{2} x number of moles of A would give the number of moles of D

  • Now that we know the number of moles of D, we can find its mass using the expression below:

             Mass of D = number of moles of D x molar mass of D

8 0
3 years ago
When you breathe the first step is that your lungs expand. why is this step needed
Alinara [238K]

Answer:

When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.

Explanation:

^^^

5 0
3 years ago
What is work?
cluponka [151]

Answer:

A:force times an object displacement

Explanation:

5 0
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Which of the following is a prokaryote that contains a cell wall, cell<br> membrane, and flagellum?
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6 0
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Need help answering
svp [43]

Answer:

Your answer would be E

Explanation:

4 0
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