Answer:
A
Explanation:
Both students are Pushing/Pulling towards the same direction meaning if enough force is applied the object will move into that direction
We have to calculate amount of zinc formed in the given reaction.
The amount of zinc formed is 16.47 g.
The balanced chemical reaction between copper and zinc nitrate is as follows:
2Cu (s) + Zn(NO₃)₂ (aq) → Zn (s) + 2CuNO₃ (aq)
From the reaction it is clear that one mole Zn is produced from two moles of Cu.
Atomic mass of copper is = 63.5 g and atomic mass of zinc is = 65.38 g.
As per reaction, 2 X 63.5 g= 127 g of copper produces 65.389 g of zinc. Therefore 32 g copper will produce g = 16.47 g of zinc.
Answer:
To determine the amount of atoms (or molecules) present given the moles of an element, you multiply the amount of moles by Avogadro's number,
6.022
⋅
10
23
4 mol
A
l
6.022
⋅
10
23
1
m
o
l
=
2.41
⋅
10
24
atoms/molecules of
A
l
Explanation:
The grams of carbon dioxide that are in 35.6 liters of Co2 is calculates as below
calculate the number of moles of CO2
At STP 1 mole = 22.4 L
what about 35.6 liters
= 1mole x 35.6 liters/ 22.4 liters = 1.589 moles
mass of CO2 = moles x molar mass of CO2
= 1.589 mol x 44 g/mol = 69.92 grams
The answer will be, so3 since s only need two electrons to complete its octet