Answer:
10 Kelvin
Explanation:
this is so simple...
if you want to raise the temp from 270K to 280K just add 10K
The procedure for this is the next one:
moles CaC2 = 485 g/64.1 g/mol=7.57
<span>moles H2O = 2 x 7.57 =15.1 </span>
<span>mass H2O = 15.1 mol x 18.02 g/mol=272.8 g
</span>
Answer:
pH = 5.7
Explanation:
<em>Which is the pH of the solution?</em>
The pH is a measurement widely used in chemistry in quality assurance of products and another analysis. Is defined as the -log [H3O+]. That means, the pH of the solution that is [H3O+] = 2x10-6 M is:
pH = -log [H3O+]
pH = -log [2x10-6 M]
<h3>pH = 5.7</h3>
