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Tresset [83]
3 years ago
14

what is the atomic number of an element with a atomic weight of 77cwnd 55 neutrons? Please help fast!

Chemistry
1 answer:
Ronch [10]3 years ago
6 0

Answer:

the atomic number of the element with 77 as atomic weight and 55 neutrons is 22

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Pleaseeee help me
scoundrel [369]

Answer:

2Al (s) + 3CuCl2( aq) --> 2AlCl3 (aq) + 3Cu(s)

Explanation:

The main thing for this equation is to follow the amount on each side. Count each element on each side. Then by looking at the numbers figure out what numerical digit would make them equal.

For example:

On the left we have

Cu=1 and Cl=2.

But on the right we have

Cu=1 and Cl=3.

In order for them to be the same, we must add a coefficient of 3 to CuCl2 (aq0  on the left and a coefficient of 3 to Cu(s) on the right.

6 0
3 years ago
Why is it important to communicate the results of an investigation?
denis-greek [22]

Answer:

Communicating Results

This is a very important step because it allows other scientists to try to repeat the investigation and see if they can produce the same results. When scientists communicate their results, they should describe their methods and point out any possible problems with the investigation.

Hoped I helped

7 0
4 years ago
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Could someone tell me if i’m correct
vladimir1956 [14]
Yeahh you should be anyways!!
7 0
3 years ago
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Is it possible for parents whose alleles for a dominant trait are homozygous dominant to have offspring with a homozygous recess
Fynjy0 [20]
The right answer for the question that is being asked and shown above is that: "TRUE." It is <span>possible for parents whose alleles for a dominant trait are homozygous dominant to have offspring with a homozygous recessive trait. This is true.</span>
8 0
4 years ago
What is 17.8 + 12.115 in sig fig
iogann1982 [59]

Answer:

Explanation:

17.8 + 12.115 = 29.9

Sig Figs

3

29.9

Decimals

1

29.9

Scientific Notation

2.99 × 10 1

E-Notation

2.99e+1

Words

twenty-nine point nine

4 0
3 years ago
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