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Irina18 [472]
3 years ago
13

How much energy is required to melt 2kg of aluminium

Chemistry
1 answer:
ki77a [65]3 years ago
6 0
800kj----------




800kj----------
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What is the number of each element and the total number of atoms for vinegar?
Mariulka [41]
There 3 elements wich is
C =4
H=8
O=4
So the total atoms are 16
4 0
3 years ago
2K + Cl2 —&gt; 2KCl <br><br> how many moles of KCl will be produced if you have 6.0 moles of K?
antiseptic1488 [7]

Answer:

6 moles

Explanation:

4 0
3 years ago
For the reaction 2H2O &gt; 2H2 + O2 what is the total number of moles of O2 produced from the complete decomposition of 8 moles
LekaFEV [45]

Answer: Option C) 4 moles

Explanation:

The reaction below shows the decomposition of 2 moles of water to yeild 2 moles of hydrogen and 1 mole of oxygen respectively.

2H2O(l) --> 2H2(g) + O2 (g)

So, if 2 moles of H2O produce 1 mole of O2

8 moles of H2O will produce Z mole of O2

To get the value of Z, cross multiply

2 x Z = 1 x 8

2Z = 8

Z = 8/2

Z = 4

Thus, 4 moles of O2 is produced from the complete decomposition of 8 moles H2O .

7 0
3 years ago
Write a<br> paragraph or two on electromagnetism.
patriot [66]

Answer:

Electromagnetism is the study of the electromagnetic force, one of the four fundamental forces of nature. It includes the electric force, which pushes all charged particles, and the magnetic force, which only pushes moving charges.It is used in many electrical appliances to generate desired magnetic fields. It is even used in a electric generator to produce magnetic fields for electromagnetic induction to occur.

Explanation:

tell me if this helped, ill try and explain better

6 0
3 years ago
What is a general representation of a secondary amine?
Makovka662 [10]

Amines are organic compound obtained from ammonia by replacement of one or more hydrogen atoms by organic groups. If one of the 'H' atom of NH3 is replace by R = alkyl group, they are referred as primary amine. If two 'H' atoms of NH3 are replace by same or different alkyl group, they are referred as secondary amine.

4 0
3 years ago
Read 2 more answers
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