The brainstem is an evolutionary ancient part of the brain and is sometimes called the ' reptilian brain' as it provides the basic bodily control in reptiles and other non-mammals.
Answer:
X = 5
Explanation:
The molar ratio of water to copper(II) sulfate must be found.
The mass of water that must have been eliminated from the salt is found by the difference in weight before and after:
(500 g) - (320 g) = 180 g water eliminated
The moles of water (MW 18.02 g/mol) is then found:
(180 g) / (18.02g/mol) = 9.9889...mol
The mass of the dehydrated copper(II) sulfate (MW 159.609 g/mol) is converted to moles:
(320 g) / (159.609 g/mol) = 2.004899...mol
The molar proportion of water to the copper(II) sulfate is then calculated:
(9.9889...mol H₂O) / (2.0034899...mol CuSO₄) ≅ 5
Answer:
Explanation:
To convert from grams to atoms, first divide by the molar mass, the multiply by 6.022*10^23.
To convert from moles to mass, multiply by the molar mass of the element.
Hope this helps!
-Emma Victoria
Answer: IT'S MUTATION I TOOK THE TEST ITS RIGHT HOPE THIS HELPED :)
Answer:
572 g
Explanation:
Molar mass is the mass of 1 mol of an element or compound
molar mass of Li₂SO₄ is the sum of the products of the molar masses of the elements by the number of atoms in the compound
molar masses of each element making up lithium sulphate
Li - 7 g/mol
S - 32 g/mol
O - 16 g/mol
molar mass of Li₂SO₄ - (7 g/mol x 2) + ( 32 g/mol x 1) + ( 16 g/mol x 4 )
molar mass = 110 g/mol
mass of 1 mol of Li₂SO₄ is 110 g
therefore mass of 5.2 mol of Li₂SO₄ is - 110 g/mol x 5.2 mol = 572 g
mass is 572 g
