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kogti [31]
3 years ago
12

Where might you find products made from polystyrene

Chemistry
1 answer:
kobusy [5.1K]3 years ago
6 0
It can be cast into moulds with fine detail, for example yogurt cups, plastic cutlery and CD and DVD cases. Polystyrene can be transparent or can be made to take on various colours. Products made from foamed polystyrene are nearly everywhere, for example packing materials, insulation, and foam beverage cups.
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Which conditions are necessary for natural selection? Check all that apply.
zepelin [54]

Answer:

Populations have genetic variation.

The environment changes.

Organisms must have specific traits in order to survive and reproduce.

Explanation:

Natural selection provides an advantage during an adverse condition for organisms that have a rich genetic variation in their population.

Also, environmental changes induced natural selection whereby organisms must adapt to changes around them.

For organisms to survive, they must have specific traits that gives them a competitive reproductive advantage.

3 0
3 years ago
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What is the percent by mass of 15g of sugar of 70g of water?
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Answer:

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3 years ago
A chemist prepares a solution of sodium thiosulfate by measuring out of sodium thiosulfate into a volumetric flask and filling t
marshall27 [118]

Mass of sodium thiosulfate Na_{2}S_{2}O_{3} is 110. g

Volume of the solution is 350. mL

Calculating the moles of sodium thiosulfate:

110. g Na_{2}S_{2}O_{3} * \frac{1 mol Na_{2}S_{2}O_{3}}{158.1 g Na_{2}S_{2}O_{3}} = 0.696 molNa_{2}S_{2}O_{3}

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\frac{0.696 mol}{0.350 L} =  1.99 mol/L

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Inherited traits are passed from parent to offspring by information coded in

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