Answer:
77.473675 grams of sodium oxide
Explanation:
Answer:
yes
Explanation:
Alchemy is best described as a form of 'proto-science' rather than a distinct science in its own right. This is because, although many observations and theories made by alchemists were based on scientific fact, they often explained these in terms of 'magic' or divine intervention.
Answer:
Yeah you should be able to.
Explanation:
Answer:
XY₂Z₄
2.35 mol Z
Explanation:
A sample of the compound contains 0.221 mol X, 0.442 mol Y, and 0.884 mol Z. We can find the simplest formula (empirical formula) by <em>dividing all the numbers of moles by the smallest one</em>.
X: 0.221/0.221 = 1
Y: 0.442/0.221 = 2
Z: 0.884/0.221 = 4
The simplest formula is XY₂Z₄.
The molar ratio of X to Z is 1:4. The moles of Z in a sample that contained 0.588 moles of X is:
0.588 mol X × (4 mol Z/1 mol X) = 2.35 mol Z
Answer:
Explanation:
From the combustion of carbon, the reactions occurring in limited oxygen conditions are:
If it occurs in excess, then any leftover CO changes to CO2. i.e.
---- (1)
----- (2)
From (1), the enthalpy change is:
From (2), the enthalpy change is:
Subtracting (2) from (1), we get:
<u> </u>
The enthalpy change ΔH of the reaction = -110.5 kJ/mol