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dezoksy [38]
2 years ago
7

How many protons are in the radioactive isotope 40/19K

Chemistry
2 answers:
NNADVOKAT [17]2 years ago
4 0
I am assuming K is potassium and potassium atoms have 21 protons and 21 neutrons. hope that helps some
 
zmey [24]2 years ago
3 0

The answer to this question is 19

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Calculate the molarity of a solution of sodium hydroxide, naoh, if 23.64 ml of this solution is needed to neutralize 0.5632 g of
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The  molarity  of  NaOH  needed  is  calculated   as  follows
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khc8h4O4  +  NaOH  ---> KNaC8h4O4  +  H2O

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molarity  of NaOh  =  (moles  of  NaOh /  volume ) x  1000

that  is { (2.76  x10^-3) / 23.64}  x100  =0.117 M
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