3 years ago

Why is mercury the only metal to have been used in thermometers

Chemistry

1 answer:

MArishka [77]3 years ago

6 0

I think because its the only one to be liquid at normal temperatures.

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How is a pure substance different from a mixture? A.Pure substances are separated by physical means B. Mixtures cannot be separa

zimovet [89]

Answer:

Explanation:

mixtures are made up of more than one components

8 0

2 years ago

A protein subunit from an enzyme is part of a research study and needs to be characterized. A total of 0.155 g of this subunit w

olga_2 [115]

Answer : The molar mass of protein is, $1.38\times 10^4g/mol$

Explanation :

Formula used :

$\pi =CRT\\\\\pi=\frac{w\times 1000}{M\times V}RT$

where,

$\pi$ = osmotic pressure = 0.138 atm

C = concentration

R = solution constant = 0.0821 L.atm/mol.K

T = temperature = $28^oC=273+28=301K$

w = mass of protein subunit = 0.155 g

M = molar mass of protein subunit = ?

V = volume of solution = 2.00 mL

Now put all the given values in the above formula, we get:

$\pi=\frac{w\times 1000}{M\times V}RT$

$0.138atm=\frac{0.155g\times 1000}{M\times 2.00ml}\times (0.0821L.atm/mole.K)\times (301K)$

$M=13878.17g/mol=1.38\times 10^4g/mol$

Therefore, the molar mass of protein is, $1.38\times 10^4g/mol$

6 0

2 years ago

Did I get the answer correct, and could someone possibly explain?

Arada [10]

Yes that should be correct

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3 years ago

HOCl dissociative into which 2 ions

trasher [3.6K]

Answer:

H+ and OCl-

Since this is an acid, the H+ will come off and what is left OCl- is the other part.

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3 years ago

How can exposoure to high energy waves be both harmful and helpful to cells??

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Exposure to high energy waves can be helpful to cells by damaging DNA in cells, meaning if somebody were to have cancer cells it breaks down the bad cells and it can shrink tumor. It can be harmful by damaging skin cells, which we need as our first line of defense. Meaning, it could cause skin cancer. Hope this helped!

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3 years ago