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xeze [42]
3 years ago
13

Consider the balanced equation for the following reaction:

Chemistry
1 answer:
wel3 years ago
4 0

Answer:

The amount of ammonia needed is 33.3 g

Therefore, we can also say 1.96 moles of NH₃

Explanation:

The reaction is: 3CuO(s) + 2NH₃(g) → 3H₂O(l) + 3Cu(s) + N₂(g)

If we see stoichiometry, 3 moles of water can be produced by 2 moles of NH₃. We propose this rule of three:

3 moles of water can be produced by 2 mole of ammonia

Then, 2.94 moles of water, must be produced by (2.94 . 2) /3 =1.96 moles of NH₃

If we convert the moles to mass. 1.96 mol . 17 g /1mol = 33.3 g

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How many moles are in 2.31*10^21 atoms of lead
Anon25 [30]
Hey there!:

Molar mass Lead  ( Pb ) = 207.2 g/mol

Therefore:

1 mole Pb --------------------- 6.02*10²³ atoms
? moles Pb -------------------- 2.31*10²¹ atoms

moles Pb = ( 2.31*10²¹ ) * 1 / ( 6.02*10²³ ) = 

moles Pb = ( 2.31*10²¹ ) / ( 6.02*10²³ ) = 

=> 0.00383 moles of Pb

Hope this helps ! 
6 0
3 years ago
Which of the following is the correct model of C6H14?
asambeis [7]

Answer:

This question is incomplete

Explanation:

This question is incomplete because of the absence of options. However, the compound C₆H₁₄ is hexane. Hexane is a member of saturated hydrocarbons (homologous series) called alkanes (with the general formula CₙH₂ₙ₊₂). The structure for an hexane is shown below

     H   H   H   H   H   H

      I     I    I     I     I     I

H - C - C - C - C - C - C - H

      I     I     I    I      I    I

     H   H   H   H    H  H

which can also be written as

CH₃CH₂CH₂CH₂CH₂CH₃

3 0
2 years ago
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Which statement about polymers is true? A. Polymers are substances that have relatively large molecules. B. Oil and gas are the
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Answer:

A.) Polymers are substances that have relatively large molecules

3 0
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What two elements are present in the compounds in the last two rows of table 4​
castortr0y [4]

Answer:could u expand on the question

Explanation:

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The carbon cycle is closely linked to which process?
ser-zykov [4K]

Answer:

Photosynthesis

Explanation:

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3 years ago
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