Express concentrations of solutions quantitatively by preparing different concentrations of mixtures according to uses and availability of materials
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Q 1/10
Score 0
In a chemistry class, Gabby prepared a solution by mixing 25 gram (g) of sugar in 80g of water. What are the concentrations of the solute and solvent in percent (%) by mass?
30
Solute: 34% ; Solvent: 60%
Solute: 24% ; Solvent: 76%
Solute: 14% ; Solvent: 86%
Solute: 44% ; Solvent: 56%
Q 2/10
Score 0
How many parts of copper and gold needed to produce 18 Karat (K) jewelry?
30
18 parts of the jewelry is made up of finest gold suited for the purpose.
18 parts is made up of gold and 6 parts is copper
18 parts is made up of gold and 9 parts is copper
18 parts is made up of copper and 6 parts is gold
10 questions
Q.
In a chemistry class, Gabby prepared a solution by mixing 25 gram (g) of sugar in 80g of water. What are the concentrations of the solute and solvent in percent (%) by mass?
1
30 sec
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Q.
How many parts of copper and gold needed to produce 18 Karat (K) jewelry?
2
30 sec
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Q.
What is the percentage concentration in the following solution given that 5g sucrose in 90g water?
3
30 sec
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Q.
A beverage contains 3% alcohol which means that:
4
30 sec
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Q.
Sterling silver contains 95% silver. If a necklace made of sterling silver weighs 15g, what is the mass of silver dissolved in the necklace?
5
30 sec
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Q.
What is the percent by volume of isopropanol in a 90ml solution that contains 25mL isopropanol?
6
30 sec
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Q.
What is the volume of a 20% methyl solution that contains 15mL of methyl?
7
30 sec
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Q.
What is the percent by mass concentration of a solution that contains 30.0g of sugar dissolved in 150g of water?
8
30 sec
Q.
A genuine sterling silver items is 92.5% silver by mass. This means that:
9
30 sec
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Q.
The following are quantitative descriptions of concentrations, EXCEPT:
