Tin is an element called Stannum and has the symbol Sn. Molar mass is the mass of 1 mol of a compound, 1 mol of any substance is made of 6.022 x 10²³ units, these units could be atoms making up an element or molecules making up a compound.
While the number of atoms making up 1 mol is the same for any element, the weight of 1 mol of substance varies from one another.
In tin(Sn) molar mass - 118.71 g/mol
In 118.71 g - there's 1 mol of tin
therefore in 37.6 g of tin - 1 x 37.6 / 118.71 = 0.31 mol
In 37.6 g of tin, there's 0.31 mol
Answer:
1
atom of
Cu
has a mass of
1.055
×
10
−
22
g
.
Explanation:
1 atom Cu
⋅
1 mol Cu
6.022
×
10
23
atoms Cu
⋅
63.546 g Cu
1 mol Cu
=
1.055
×
10
−
22
g Cu
1 atom of copper must be converted in moles to express it as a quantity that can be converted into grams (our second step).
Avogadro's Number
(
1 mole
=
6.022
×
10
23
particles
)
and the relative atomic mass of copper
(
1 mole of copper = 63.546 g
)
are the equalities required to make this conversion.
Explanation:
Since there are 22.4 L/mol at STP, you would convert 1000mL to 1 L then divide that by 22.4, meaning your answer would be 0.0446 rounded to 0.04
Answer:
F
O
N
Mg
Explanation
The key explanation here is that we need to know the trends in electronegativity value increase or decrease across the periods and down the group.
Across the periods, electronegativity is expected to increase. Hence, with the exception of the noble gases, the most electronegative elements are found further right on the periodic table. While electronegativity is expected to increase across the period, it decreases down the group.
Hence, if two elements are in the same group, further down we have the one with the less electronegative value. If two elements are in the same period, further right we have the more electronegative element.