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1. Remember (sum of products) - (sum of reactants)
So ΔHrxn = 2 ΔHf [H2(g)] + ΔHf [Ca(OH)2(s)] - 2 ΔHf [H2O(l)] - ΔHf [Ca(s)]
= 2*0 + -986.09 kJ/mol - 2*(-285.8 kJ/mol) - 0
Do the math and you'll have the answer. BTW the ΔHf [H2(g)] and ΔHf
[Ca(s)] were 0 because these are elements in their standard states.
</span>HOPE THIS HELPS ;)
Answer:
the concentration of new solution = 0.025 M
Explanation:
Given that :
The initial volume V_1 = 15 mL
Initial concentration M_1 = 0.16 M
Final volume V_2 = 95 mL
Final concentration M_2 = ???
We know that M_1 × V_1 = M_2V_2
Making M_2 the subject of the formulae; we have :
M_2 = (M_1 × V_1)/V_2
M_2 = (0.16 × 15)/ 95
M_2 = 0.025 M
Thus, the concentration of new solution = 0.025 M
Answer:
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Explanation:
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Answer:
a skin cell? In all the somatic cells of the body 23 pairs of chromosomes are present. They mean 46 chromosomes in total. In a skin cell of humans, 46 chromosomes are present(human diploid number).
Explanation:
