All categories

2 years ago

Which substance is made of polymers? A. marble B. protein C. salt D. steel

Chemistry

2 answers:

Vikentia [17]2 years ago

6 0

The answer is B, protein.

aleksandr82 [10.1K]2 years ago

5 0

Answer: Option B) is the correct answer.

Explanation:

A polymer is defined as a molecule which has 'n' number of monomer units.

For example, $(CH_{2}=CH_{2})_{n}$ is a poly ethene polymer.

Similarly, proteins are also polymers as they are made up of amino acids and contain number of repeated units just like polymers.

Thus, we can conclude that protein is made of polymers.

You might be interested in

A thermometer having first-order dynamics with a time constant of 1 min is placed in a temperature bath at 100oF. After the ther

sveticcg [70]

Answer:

(a) See below

(b) 103.935 °F; 102.235 °F

Explanation:

The equation relating the temperature to time is

$T = T_{0} + \Delta T\left (1 - e^{-t/\tau} \right )$

1. Calculate the thermometer readings after 0.5 min and 1 min

(a) After 0.5 min

$\begin{array}{rcl}T & = & T_{0} + \Delta T\left (1 - e^{-t/\tau} \right )\\ & = & 100 + 10\left (1 - e^{-0.5/1} \right )\\ & = & 100 + 10\left (1 - e^{-0.5} \right )\\ & = & 100 + 10 (1 - 0.6065)\\ & = & 100 + 10(0.3935)\\ & = & 100 + 3.935\\ & = & 103.935\,^{\circ}F\\\end{array}$

(b) After 1 min

$\begin{array}{rcl}T & = & T_{0} + \Delta T\left (1 - e^{-t/\tau} \right )\\ & = & 100 + 10\left (1 - e^{-1/1} \right )\\ & = & 100 + 10\left (1 - e^{-1} \right )\\ & = & 100 + 10 (1 - 0.3679)\\ & = & 100 + 10(0.6321)\\ & = & 100 + 6.321\\ & = & 106.321\,^{\circ}F\\\end{array}$

2. Calculate the thermometer reading after 2.0 min

T₀ =106.321 °F

ΔT = 100 - 106.321 °F = -6.321 °F

t = t - 1, because the cooling starts 1 min late

$\begin{array}{rcl}T & = & T_{0} + \Delta T\left (1 - e^{-(t - 1)/\tau} \right )\\ & = & 106.321 - 6.321\left (1 - e^{-(2 - 1)/1} \right )\\ & = & 106.321 - 6.321\left (1 - e^{-1} \right )\\ & = & 106.321 - 6.321 (1 - 0.3679)\\ & = & 106.321 - 6.321 (0.6321)\\ & = & 106.321 - 3.996\\ & = & 102.325\,^{\circ}F\\\end{array}$

3. Plot the temperature readings as a function of time.

The graphs are shown below.

6 0

3 years ago

Electrons spill in shells in the nucleous the closest shell (n=1) can contain the maximum of. Electrons

stiks02 [169]

The answer is 2 electrons I believe!

8 0

3 years ago

How would you arrange the objects below from greatest to least volume?

ikadub [295]

Answer:

A balloon

A bottle of soda

A rock

A water bottle

Explanation:

4 0

3 years ago

Read 2 more answers

Can a bad thermostat cause radiator to blow

erastova [34]

I don't exactly know but probably so.

3 0

3 years ago

What can you predict about an element from its position in the periodic table?

Igoryamba

Yeah of-course!! It's valency by group most of the chemical property like electronegativity, ionization energy etc. by the combination of groups and periods...

8 0

2 years ago