The sum could be greater than 1 but not equal to 1.
Answer:
- 0.71963 g of Zn
- 0.80256 g of HCl
Step-by-step explanation:
The required mass of reactants can be computed from the number of moles of product.
moles of ZnCl₂ = (1.5 g)/(136.282 g) ≈ 0.0110066 moles
Then the mass of Zn required is ...
mass of Zn = (0.0110066 mol)(65.382 g/mol) = 0.71963 g
Two moles of HCl are used in the reaction with each mole of Zn, so the mass of HCl required is ...
mass of HCl = 2(0.0110066 mol)(36.458 g/mol) = 0.80256 g
_____
<em>Comment</em>
The discrepancy in the last two decimal places of the weights above versus the calculator output below comes from rounding of moles of Zn to 4 significant digits, instead of 5 or more. The number of moles of ZnCl₂ is closer to 0.0110066.
Answer:
planet
atom particles
ball
and child
Step-by-step explanation:
Answer:
$ 27.09
Step-by-step explanation:
Given,
The regular price of the watch = $ 32.25,
The marked off percentage or discount percentage, in the sale = 16%,
So, the amount of marked off = 16% of regular price
= 16% of 32.25
= 0.16 × 32.25
= $ 5.16
Hence, the the price of the watch during the sale = Regular price - marked off
= $ 32.25 - $ 5.16
= $ 27.09
Last option is correct.
Answer:
7.8
Step-by-step explanation:
Since the average is 7.8 and everyone scored the same score so
that means everyone scored a 7.8