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vesna_86 [32]
2 years ago
15

6 + 9 = ? This is a tough question, my fellow friends...

Chemistry
2 answers:
Allushta [10]2 years ago
6 0

k k chill the answer is 15 sheesh...

vesna_86 [32]2 years ago
5 0

Answer:

uhmmmmmmmmmmmmmmmmm 15?

Explanation:

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ss7ja [257]
0.0821 L-atm/mol-K
8.314 kPa-L/mol-K
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2 years ago
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a dog is trained to sit and shake hands. These traits are most likely? a. inherited b. not inherited c. not acquired d. innate
Ksenya-84 [330]
<span>A dog is trained to sit and shake hands. These traits are most likely?

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4 0
3 years ago
Which one of the following descriptions relating to nuclear reactions is correct?
monitta

Answer: option D - The total number of nucleons changes.

Explanation:

Nuclear Reaction is best described as a process such as the fission of an atomic nucleus, or the fusion of one or more atomic nuclei and / or subatomic particles in which the NUMBER of PROTONS and / or NEUTRONS in a nucleus CHANGES; the reaction products may contain a different element or a different isotope of the same element.

Note that the NUCLEONS refers to ONE of the subatomic particles of the atomic nucleus, i.e. a PROTON or a NEUTRON.

So, in a Nuclear reaction, the total number of nucleons changes.

4 0
3 years ago
I need help with this question. Thank you.
marishachu [46]
There are 76 atoms in total
3 0
2 years ago
The maximum allowable concentration of pb2+ ions in drinking water is 0.05 ppm (i.e., 0.05 g of pb2+ in 1 million grams of water
trasher [3.6K]
PbSO₄ partially dissociates in water. the balanced equation is;
                    
                       PbSO₄(s) ⇄  Pb²⁺(aq) + SO₄²⁻(aq)
Initial                                     -                -
Change             -X               +X           +X
Equilibrium                           X              X

Ksp           =    [Pb²⁺(aq)] [SO₄²⁻(aq)]
1.6 x 10⁻⁸  =    X * X
1.6 x 10⁻⁸  =    X²
          X    =   1.3 x 10⁻⁴ M
      
Hence the Pb²⁺ concentration in underground water is 1.3 x 10⁻⁴ M. 
[Pb²⁺]  = 1.3 x 10⁻⁴ M.
           = 1.3 x 10⁻⁴ mol / L x 207 g / mol 
           = 26.91 ppm

8 0
3 years ago
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