Answer:
0.01395mol Cr2O3
Explanation:
the molar mass of Cr2O3 is 151.9904 g/mol
2.12g Cr2O3 x 1 mol/151.9904g = 0.01395mol Cr2O3
Answer:
it shows the breakdown of the atom
Explanation:
it will show it molecularly
Answer:
Explanation:
Hello there!
In this case, since the thermodynamic definition of heat in terms of mass, specific heat and temperatures is given by:
We are to calculate the specific heat of the ethanol as shown below:
Thus, by plugging it the given data we can obtain:
Regards!
Answer:
If pOH is 3.05, pH is 10.95 or
[H+]=1.122⋅10−11 mol/L
Explanation:
pH=−log(H+)Now, what is H+
if your pH is 10.95 (since pH+pOH=14, your pH=10.95).
(H+)=10 −10.95
(H+)=1.122⋅10 −11
This is your hydrogen ion concentration: [H+]=0.00000000001122 mol/L
<span>A 240g hydrated sodium sulphide contains 162g of water of crystallisation. What is the correct molecular formula for this compound?
Answer is A
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