Answer:

Explanation:
There is a heating process between an aluminium piece and water, which is described by the First Law of Thermodynamics:


The mass of the aluminium piece is therefore cleared and known variables are substituted:



Answer:
to understand the human life
Explanation:
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In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure, that occurs naturally in pure form.
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Answer:
C 108
Explanation:
1 It was found that 4n atoms of metal x
weigh 501.6 g. The relative atomic mass
of X is 209. If n atoms of another metal,
Y, weigh 65.00 g, what is the relative
atomic mass of metal Y?
A 27 B 52 C 108 D 137
if 4n atoms of x weigh 501.6 gm, the n atoms weigh 501.6/4 = 125.4 gms
since the atomic mass is 209, then 6.022 X10^23 atom weigh 209
the ratio of 125.4 to 209 is
125.4/Y =0.6
therefor n is the number of atom in 0.6 moles
if metal Y has the same, number of atoms "n" and weighs 65 gm
then then the relative atomic mass is
65/0.6 =108
so the answer is
C 108
Answer:
The volume at STP of 0,765 moles of carbon monoxide gas is 17, 125 L.
Explanation:
We use the ideal gas formula, with the constant R = 0.082 l atm / K mol. The STP conditions are : 1 atm pressure and 273 K temperature. Solve for the formula, V (volume):
PV=nRT ---> V= (nRT)/P
V= (0,765 mol x0,082 l atm/ K mol x 273 K)/ 1 atm
<em>V= 17, 12529 L</em>