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Serga [27]
3 years ago
6

If a 0.75 mole sample of helium gas occupies a volume of 1.5 l, what volume will a 1.2 mole sample of gas occupy at the same tem

perature and pressure?

Chemistry
1 answer:
MakcuM [25]3 years ago
5 0
I hope it's correct :)

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__Zn(s)+__CuSO4(aq)--->_______+________
stiks02 [169]

Answer:

Zn + CuSO4 —> ZnSO4 + Cu

Explanation:

Zn is higher than Cu in electrochemical series and so will displaces Cu in solution according to the equation:

Zn + CuSO4 —> ZnSO4 + Cu

5 0
3 years ago
How do I calculate the molecular weight of Mg(OH)2?
vodomira [7]

The molecular weight of Mg(OH)2 : 58 g/mol

<h3>Further explanation</h3>

Given

Mg(OH)2 compound

Required

The molecular weight

Solution

Relative atomic mass (Ar) of element : the average atomic mass of its isotopes  

Relative molecular weight (M)  : The sum of the relative atomic mass of Ar  

M AxBy = (x.Ar A + y. Ar B)  

So for Mg(OH)2 :

= Ar Mg + 2 x Ar O + 2 x Ar H

= 24 g/mol + 2 x 16 g/mol + 2 x 1 g/mol

= 24 + 32 + 2

= 58 g/mol

5 0
3 years ago
If the mass of the products measured 120g what would the mass of the reactants
Ket [755]
It has to be 120g because each and every chemical equation has to satisfy the law of conservation of mass, ie sum of mass of products is always equal to the sum of masses of reactants. If reactants=120g, then products=120g
5 0
3 years ago
All the elements of a family in the periodic table have what feature in common?
SCORPION-xisa [38]

They all have the same number of electrons in the electron cloud.

4 0
3 years ago
Read 2 more answers
I need the measurements to the appropriate amount of significant figures on this pleasee
klio [65]

Answer:

the blue paper, 10.9

Explanation:

3 0
3 years ago
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