Because they are different elements have different number of protons and neutrons........ I guessed do not trust me...
When copper (ii) oxide is heated in presence of hydrogen gas it produces copper metal and water vapor.
that is
CuO + H2 = Cu + H2O
The moles of copper metal produced is calculated as below
find the moles of CUO used
moles = mass/molar mass
=5.6/79.5 =0.07 moles
by use of mole ratio between CUO:Cu which is 1:1 the moles of Cu is also
=0.007 moles of Cu
Answer:
How does the cuddle fish change its colors?
Please tell me if I'm wrong.
Answer:
A proton has the charge of +1.
Explanation:
Explanation:
The given data is as follows.
Pressure (P) = 170 torr, mass of heptane (m) = 86.7 g
First, we will calculate the number of moles as follows.
No. of moles =
=
= 0.867 mol
Now, the number of moles of are calculated as follows.
No. of moles =
=
= 1.07
Therefore, mole fraction of heptane will be calculated as follows.
Mole fraction =
=
=
= 0.445
Now, we will calculate the partial pressure of heptane as follows.
=
= 75.65 torr
Thus, we can conclude that the partial pressure of heptane vapor above this solution is 75.65 torr.