2 years ago

Which of these statements accurately describes polymers?

Chemistry

2 answers:

lesya692 [45]2 years ago

3 0

Answer:

Its A.) Polymers are macromolecules

Explanation:

rosijanka [135]2 years ago

3 0

Answer:

The correct answer that you are looking for is A.) Polymers are macromolecules.

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A forensic scientist reports that a dead woman had high concentrations of a pain-fighting drug in her blood. What type of analys

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C) the scientist made an identification by identifying the amount of drug in her blood and realising it was high

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3 years ago

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Which one is a true statement about endothermic reactions? a: More heat is given off than is put into the reaction. b :The react

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A because it gets hot

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3 years ago

Hospital patients are administered oxygen from an pressurized

Nataly_w [17]

Answer:

110L

Explanation:

Boyle's Law states that P1×V1=P2×V2

Volume is indirectly proportional to Pressure so P×V is constant

P1=55atm

V1=6L

P2=3atm

V2 is to be found

P1×V1=P2×V2

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2 years ago

The mass percent of solute in a solution containing 3.73 g KBr dissolved in 131 g of H2O is:

Elina [12.6K]

$\huge \underbrace \mathfrak \red{Answer}$

28%

Explanation:

mass of solute(KBr) = 3.73g

mass of solvent(H2O) = 131g

mass of solution = mass of solute + mass of solvent

= 3.73 + 131

= 134.73g

$\sf \large {mass \: percentage = \frac{mass \: of \: solute}{mass \: of \: solvent} \times 100} \\ \\ \sf mass \: percentage = \frac{3.73}{134.73} \times 100 \\ \\ \sf mass \: percentage = 0.028 \times 100 \\ \\ \sf mass \: percentage = 28\%$

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2 years ago

The density of aluminum is 2.70 g/mL. If you use 108 g of aluminum foil, what is its volume in mL?

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Answer:

volume =40.0 ml

Explanation:

density = mass/ volume

volume = mass/ density

volume = 108/ 2.70

volume =40.0 ml

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2 years ago