To find out the number of water molecules produced simply use Avogadro’s constant, where 1 mol of any compound is equal to 6.02 x 10^23 molecules of the substance.
Multiply 0.815 to this value.
Answer: mass of water is 81.1 g
Explanation: from reaction eguation you see there are equal amounts of water and Mg(OH)2. Then amount of water is 4.50 mol. Molar mass of water is 18.016 g/mol.
Mass m= n·M= 4.50 mol· 18.016 g/mol = 81.1 g
<span>Total mixture weight equals the weight of all the components added together:
0.8g salt + 1.3g SIO2 + 2.5g NH4Cl = 4.6g total
To find the percent composition of the mixture, divide the weight of each component in the mixture by the total weight of the mixture and multiply by 100.
For salt: 0.8g / 4.6g = 0.1739 * 100 = 17.39% salt
For SIO2: 1.3g / 4.6g = 0.2826 * 100 = 28.26% SIO2
For NH4Cl: 2.5g / 4.6g = 0.5435 * 100 = 54.35% NH4Cl</span>
M₀=100 g
T=2 s
t=8s
m=m₀/{2^(t/T)}
m=100/{2^(8/2)}=100/2⁴=6.25 g
