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3 years ago

What can a drop of liquid mercury be described as?

2 answers:

8 0

A drop of iquid mercury is D. <span> a pure substance and an element. This is because mercury is an element which exists as liquid in the normal or standard conditions. It is a metal that is toxic to all environments. It is pure because it is composed only of one kind of substance.</span>

mezya [45]3 years ago

6 0

Answer: D) a pure substance and an element

Explanation:

Mercury is an element which is composed of similar atoms and is a pure substance.

Element is a pure substance which is composed of atoms of similar elements.

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.

Mixtures are impure substances and are heterogeneous materials as they do not have uniform composition and the components are not evenly distributed throughout the material.

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Cual es el disolvente de acero

drek231 [11]

Answer:

I do not know what is the solvent for steel is. sorry

Explanation:

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3 years ago

PLEASE HELP I HAVE TO DO THIS BENCHAMRK QUESTION!!!

GuDViN [60]

PLEASE HELP I HAVE TO DO THIS BENCHAMRK QUESTION!!!

The chart shows parts of a plant and an animal, at different levels of organization. Consider the plant images. If we are referring to levels of organization in a plant which picture can BEST be used to fill in box Y?

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3 years ago

To protect yourself from consuming too much _____, you should limit your consumption of swordfish, king mackerel, and shark. a.

Serggg [28]

Answer:

b. mercury

Explanation:

Fishes and some other sea foods are are known to concentrate mercury in their bodies. Consumption of these products gradually accumulate mercury in the body over time.

More specifically, fishes like swordfish, king mackerel and shark are known to concentrate higher amount of mercury than other species of fishes. Hence, limiting their consumption will protect humans from mercury poisoning.

The correct option is b.

5 0

3 years ago

Read 2 more answers

An ambulance took 2 hours to cover a distance of 10 kilometers. Find its speed.

bekas [8.4K]

Answer:

5km/hour

Explanation:

2hours = 10km

/2 /2

1 hour = 5km

7 0

3 years ago

Read 2 more answers

Question 2: Heat (5 points)

Ronch [10]

Answer:

(i) specific heat

(ii) latent heat of vaporization

(iii) latent heat of fusion

Explanation:

i. Q = mcΔT; identify c.

Here, Q is heat, m is the mass, c is the specific heat and ΔT is the change in temperature.

The amount of heat required to raise the temperature of substance of mass 1 kg by 1 degree C is known as the specific heat.

ii. Q = mLvapor; identify Lvapor

Here, Q is the heat, m is the mass and L is the latent heat of vaporization.

The amount of heat required to convert the 1 kg liquid into 1 kg vapor at constant temperature.

iii. Q = mLfusion; identify Lfusion

Here, Q is the heat, m is the mass and L is the latent heat of fusion.

Here, Q is the heat, m is the mass and L is the latent heat of vaporization.

The amount of heat required to convert the 1 kg solid into 1 kg liquid at constant temperature.

8 0

3 years ago