Answer:
No, and yes. As there is a finite amount of matter in the
universe, only so much can be converted to make energy. There will
be a limit, though it is a long, long way from where we are
Explanation:
Moles of CaBr2 = 5/molar mass of CaBr2
= 5/199.886
= 0.025 moles.
Hope this helps!
Answer: stay away from doors and windows.
Explanation:
to aviod geting hit by glass
Answer:
Concentration of original solution = 1.66
Explanation:
We know that

We have given concentration of NaOH = 0.1678
Volume of NaOH = 19.88 mL = 0.01988 L
So moles of NaOH = volume x concentration of NaOH
= 
Moles of
in 10 mL of diluted solution = 1/2 x moles of NaOH
=
x 0.00333 = 0.00166 mol
Moles of
in 25 mL of original solution
= moles of H2SO4 in 250 mL of diluted solution
=
x 0.00166 = 0.0415 mol
Concentration of original solution = 
= 