The answer for this problem is 22.12. Hope it helped. :)
WORK: 10.5+11.62=22.12
Answer:
The correct answer is KNO3
Explanation:
Pb(NO3)2 +2 KCl -> PbCl2 + KNO3
If we look at the left side of the equation we could see that there are 1 lead atom, 2 nitrate atoms ,2 potassium atoms and 2 chlorine atoms
Now when we look at the right side of the equation, we found that there are –
1 lead atom and 2 chlorine atoms (PbCl2) , thus lead and chlorine are balanced as they have the same number of atom in LHS and RHS
There is only 1 potassium and 1 nitrate atom on RHS , thus KNO3 is not balanced.
The balanced equation would be –
Pb(NO3)2 +2 KCl -> PbCl2 +2 KNO3
Answer: 6.38 moles of are needed to react with 2.55 mol of
Explanation:
The balanced chemical reaction for the combustion of ethyne is:
According to stoichiometry:
2 moles of require = 5 moles of
Thus 2.55 mol of require = moles of
Thus 6.38 moles of are needed to react with 2.55 mol of
Answer: Iron is magnetic, which means a magnet could be used to attract the iron filings out of the mixture. Salt is water soluble. The salt will dissolve and the sand will not. Hope this helped! :)
A pure substance<span> has a definite and constant composition — like salt or sugar. A </span>pure substance <span>can be either an element or a compound, but the composition of a </span>pure substance<span> doesn't vary.</span>