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tatuchka [14]
3 years ago
14

What is the correct answer?

Chemistry
2 answers:
Valentin [98]3 years ago
7 0

Answer: First Choice

Explanation:

It is the first choice because molecules tend to decrease motion when they are being converted into a solid but when in liquid or vapor they are increased by the moving atoms grouped and separated from each other.

Ivahew [28]3 years ago
3 0
C - bc as the water boils the cold water particles melt and become the hot water particles!
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Mass = 200.0 g volume = 100.0cm3 What is the density?
Marianna [84]
The density of an object is defined as its mass divided by its volume. Mathematically, density = Mass / Volume. The unit of density is kilogram per cubic meter, kg / m^3 or g /cm^3.
For the question given above: the 
Mass = 200.0 g
Volume = 100.0 cm^3
Therefore, Density = Mass / Volume = 200 / 100  = 2
Thus,  the density of the object is 2 g /cm^3.
3 0
3 years ago
Why is petroleum called liquid gold?
lana66690 [7]

Answer:

It is called liquid gold because of its high price and value and its economic need by all the countries worldwide.

Explanation:

Petroleum is present in abundant quantity in the some regions . So it is considered as Liquid gold, which they value a lot.

3 0
3 years ago
Purchasing the correctly sized BMX bike is based on the height of the rider. In order to fit a customer, the salesman can use th
Phantasy [73]
Answer: Your best answer is A.

Explanation: 1.35 is a constant and thus is does not change. The equation can be simplified to-
“b = (0.29 x h)+ 1.35”
So, if your rider is say 60 inches tall, the equation would change to-
“b = (0.29 x 60)+ 1.35”
Then to-
“b = (17.4) + 1.35” or “b = 17.4 + 1.35”
And therefore the size of the BMX bike frame in inches would be-
“b = 18.75”

Hope this helped :)
5 0
2 years ago
Calculate the PH of a solution 0.030 MH2SO4
Zinaida [17]

Answer:

pH= 2- log3

Explanation:

H2SO4 + H2O -> HSO4^(-) + H30^(+)

0.03M ___ ___

___ 0.03M 0.03M

H30^(+) : C = 0.03M

pH= - log( [H3O^(+)] ) => pH= - log {3× 10^(-2)} => pH = 2 - log3

4 0
3 years ago
A block of wood has a volume of 55 cm3 and a mass of 550 g. What would be its density? Answer in units of g/cm3.
VLD [36.1K]

given,

volume (V)=55cm3

mass(m)=550g

now density=m/v

=550/55

=10 g/ cm3

8 0
3 years ago
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