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andrew-mc [135]
4 years ago
14

Angela was instructed on a test to make an analogy, or comparison, for polymers. She writes four examples of how polymers are li

ke pearl necklaces. She has many parts to this analogy that make sense, but one part of her analogy does not fit.
Which is the most likely error in her analogy?
Chemistry
2 answers:
erica [24]4 years ago
8 0

Answer:

B

Explanation:

I took the test

inessss [21]4 years ago
6 0
The correct option is this: THE THREAD THAT CONNECTS THE PEARLS IS LIKE AN IONIC BOND.
The type of bond that connect polymers is not ionic bond. Polymers are made up of non metals and carbon is the most common element in polymers. Molecules in polymers are usually connected together by covalent bonds.
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Did I get these correctly?
Luda [366]
Those are both correct! great job, keep up the good work (-:
4 0
3 years ago
If one of the reactants in a reaction is Na20, what is known about the products?
Anna [14]

Answer:D

Explanation:

A P E X

3 0
3 years ago
Can anybody can solve this PLEASE
strojnjashka [21]

Answer:

Explanation:

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8 0
3 years ago
An inverted pyramid is being filled with water at a constant rate of 45 cubic centimeters per second. The pyramid, at the top, h
vaieri [72.5K]

Answer:

13.20 cm/s is the rate at which the water level is rising when the water level is 4 cm.

Explanation:

Length of the base = l

Width of the base  =  w

Height of the pyramid = h

Volume of the pyramid = V=\frac{1}{3}lwh

We have:

Rate at which water is filled in cube = \frac{dV}{dt}= 45 cm^3/s

Square based pyramid:

l = 6 cm, w = 6 cm, h = 13 cm

Volume of the square based pyramid = V

V=\frac{1}{3}\times l^2\times h

\frac{l}{h}=\frac{6}{13}

l=\frac{6h}{13}

V=\frac{1}{3}\times (\frac{6h}{13})^2\times h

V=\frac{12}{169}h^3

Differentiating V with respect to dt:

\frac{dV}{dt}=\frac{d(\frac{12}{169}h^3)}{dt}

\frac{dV}{dt}=3\times \frac{12}{169}h^2\times \frac{dh}{dt}

45 cm^3/s=3\times \frac{12}{169}h^2\times \frac{dh}{dt}

\frac{dh}{dt}=\frac{45 cm^3/s\times 169}{3\times 12\times h^2}

Putting, h = 4 cm

\frac{dh}{dt}=\frac{45 cm^3/s\times 169}{3\times 12\times (4 cm)^2}

=13.20 cm/s

13.20 cm/s is the rate at which the water level is rising when the water level is 4 cm.

3 0
3 years ago
PLEASEEEE HELP MEE!
Ugo [173]

Answer:

2nd option

Explanation:

7 0
3 years ago
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