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guapka [62]
3 years ago
11

Explain what is wrong with this statement: “The density of a heavy bar of pure gold is greater than the density of a small ingot

of pure gold."
Chemistry
1 answer:
VladimirAG [237]3 years ago
5 0

Answer:

Both densities would be equal.

Explanation:

since both the bar and the ingot are pure gold, they would have the same density, despite the amount.

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b. Describe how the temperature changes within a phase and during a phase change as heat is added to a water sample. (2 points)
Rudik [331]
Hello!

Take for example the heating of water.

When heating liquid water from room temperature (25 °C) to the boiling point (100 °C), adding heat results in a direct increase in the temperature. This kind of heat is called sensible heat, because we can sense the effect of the added energy.

But when you reach 100 °C, there is a phase change from liquid to vapour, and the added heat is used to produce the phase change, and no increase in temperature is observed, only the phase change. This kind of heat is called latent heat. 

Have a nice day!

6 0
3 years ago
Hydrocarbons are compounds that contain
Mademuasel [1]
2) carbon and hydrogen only.
3 0
4 years ago
What volume of 1.27 M HCl is required to prepare 197.4 mL of 0.456 M HCl
Orlov [11]

Answer:

70.88 mL volume of 1.27 M of HCl is required.

Explanation:

Given data:

Initial volume = ?

Initial  molarity =  1.27 M

Final volume = 197.4 mL

Final molarity = 0.456 M

Solution:

Formula:

M₁V₁ = M₂V₂

Now we will put the values in formula.

1.27 M × V₁ =  0.456 M × 197.4 mL

V₁ = 0.456 M × 197.4 mL/1.27 M

V₁ = 90.014M.mL/1.27 M

V₁ = 70.88 mL

70.88 mL volume of 1.27 M of HCl is required.

7 0
3 years ago
Can someone please help me
Nezavi [6.7K]

Answer:

I would say w is the answer

4 0
3 years ago
Read 2 more answers
What are chemical and physical properties of oil?
yarga [219]

Answer: Crude oil is a mixture of comparatively volatile liquid hydrocarbons (compounds composed mainly of hydrogen and carbon),

Explanation: though it also contains some nitrogen, sulfur, and oxygen. Those elements form a large variety of complex molecular structures, some of which cannot be readily identified.

3 0
3 years ago
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