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dimulka [17.4K]
3 years ago
10

What are the atomic number and mass number of this atom

Chemistry
1 answer:
lina2011 [118]3 years ago
5 0
No diagram is given therefore I cannot answer however, use this for reference.
The atomic mass of an atom would be the number of protons PLUS the number of neutrons. Because this atom shown has 6 protons and 6 neutrons, they add up to 12. In this case, the atomic mass of this atom is 12. Atomic number is the number of protons in an atom, in this case it is 6. The atomic number is 6.

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4 0
3 years ago
When an atom _______<br> an electron, it charge is negative .
nikitadnepr [17]

Answer:

Gains

Explanation:

If it gains an electron it causes the atom to become negative since electrons are negative and an overall charge of an atom is neutral. Therefore, it would become negative.

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3 0
2 years ago
Read 2 more answers
Disadvantages of modern periodic table?<br>​
ira [324]

Answer:

It has its elements with mass numbers phrased in many decimal places, it requires one to round off to get the actual value.

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4 0
2 years ago
"calculate the h+ in a solution that has a ph of 8.73"
alexdok [17]
The  H+   in  a  solution  that  has  a Ph  of  8.73   is   calculate    as  follows

Ph is always =   -  log  (H+)

H+  =    10^-Ph

H+  is  therefore  =  10 ^-  8.73
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8 0
2 years ago
A 0.75mol calcium carbonate (CaCO3) pellet has what mass?
aleksandr82 [10.1K]

Answer:

75 g  

Step-by-step explanation:

<em>Step 1. </em>Calculate the molar mass of CaCO₃

Ca                    =   40.08

  C                    =   12.01

3O = 3 × 16.00 = <u>  48.00 </u>

               Total = 100.09 g/mol

<em>Step 2</em>. Calculate the mass of the pellet

Mass of CaCO₃ = 0.75 mol × (100.09 g/1 mol)

Mass of CaCO₃ = 75 g

4 0
2 years ago
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