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Law Incorporation [45]
2 years ago
14

Two unknown elements react to form a single compound. The compound is shiny and malleable. What would you expect to be true abou

t the compound produced?
A.
The compound will probably have properties of both elements like a metalloid.

B.
The compound will probably have high boiling points and melting points and will be conductive in solution.

C.
The compound will probably have low boiling and melting points and will not be conductive in solution.

D.
The compound will probably have high boiling and melting points and will not be conductive in solution.
Chemistry
2 answers:
Fed [463]2 years ago
7 0
I believe the answer is B
mamaluj [8]2 years ago
3 0

Answer:

B

Explanation:

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An inverted pyramid is being filled with water at a constant rate of 45 cubic centimeters per second. The pyramid, at the top, h
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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}

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