Answer:
The number of each element in the molecule.
Explanation:
C₁₂H₂₂O₁₁ is one molecule, and it is made 3 elements carbon, hydrogen, and oxygen. There are 12 carbons, 22 hydrogens, and 11 oxygens. If these numbers were different, it would be a different molecule.
Answer:
2,4-di Ethyl-2-methylpentane
C10H22
3,4 dimethyl heptane
C9H20
Explanation:
The name carbohydrate indicate chemical composition of sugars, as carb means carbon and hydrate means hydrogen and oxygen.
Carbohydrate indicates the presence of carbon, hydrogen and oxygen of which sugar molecule is made up of.
Carbohydrate can be defined as naturally occuring molecules that is made of carbon, hydrogen and oxygen.
Considering the equation,
3Na₂SO₄(aq)+2Al(NO₃)₃(aq)------>Al₂(SO₄)₃(s)+6NaNO₃(aq)
As it can be seen from the equation,
2 moles of Al(NO₃)₃ reacts with 3 moles of Na₂SO₄ to give 1 mol of Al₂(SO₄)₃.
Here 690 mL of 2.5 M Al(NO₃)₃=2.5× 690/1000
=1.7 mol of Al(NO₃)₃
As 2 moles of Al(NO₃)₃ give 1 mol of Al₂(SO₄)₃
So 1.7 mol of Al(NO₃)₃ give 1.7/2 mol of Al₂(SO₄)₃
so it will give 0.86 mol of Al₂(SO₄)₃.
Moles=mass given /molar mass
molar mass of Al₂(SO₄)₃= 342.1509 g/mol
Moles= mass given/342.1509
0.86=mass given/342.1509
mass of Al₂(SO₄)₃=295.1 g
so 295.1 g of Al₂(SO₄)₃ will be produced.
Answer:
Explanation:
Measurement made = 100.2 °C
uncertainty = 0.1°C
percent uncertainty = .1 x 100 / 100.2
= .099 %
2 nd thermometer :
Measurement made = 99.0 °C
uncertainty = 0.5°C
percent uncertainty = .5 x 100 / 99
= .505 %
Percent error :
1 st thermometer
Error = 100.2 - 100 = .2 °C
measurement = 100.2
percent error = .2 x 100 / 100.2
= .1996 %
2 nd thermometer
Error = 100.00 - 99 = 1.00 °C
measurement = 99
percent error = 1 x 100 / 99
= 1.01 %
