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viktelen [127]
3 years ago
6

How to separate gravel from water

Chemistry
1 answer:
Marrrta [24]3 years ago
3 0
Use a colander and sake the water out
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An alcohol thermometer makes use of alcohol's changing in order to measure temperature. As the temperature goes up.
kotegsom [21]

The question is incomplete, the complete question is;

An alcohol thermometer makes use of alcohol's changing _______ in order to measure temperature. As the temperature goes up, the alcohol contained in the thermometer increases in volume, filling more of the thermometer's tube.

A.

mass

B.

state

C.

chemical composition

D.

density

Answer:

D.

density

Explanation:

Every kind of thermometer makes use of a change in a particular physical property of a substance as a measure of temperature. It must be a property that changes with temperature.

Density of a substance changes with temperature. Even though the mass of alcohol in glass remains constant, but its volume increases or decreases with change in temperature leading to a change in volume and consequently a change in density of the alcohol in glass. This change is used as a measure of the change in temperature.

4 0
3 years ago
The mechanical advantage of the wedge increases as it gets _____.
OLEGan [10]
Do you have Answer Choices
6 0
3 years ago
Which is a problem associated with the use of trees for biomass? I. Potential deforestation II. Burning fossil carbon III. Poten
BigorU [14]

Answer:

Both Option (I) and Option (III)

Explanation:

Biomass is usually defined as those organic molecules that are obtained from plants and animals, in order to produce energy. It is a renewable resource. Some of the examples of biomass include wood, crop, animal fossil fuel.

A large number of trees are being cut down to construct these biomass energies such as woods. This results in the deforestation process where the forested areas are converted into empty dry soils. This results in the increasing rate of erosion because the prevailing wind and flowing water can easily carry away the topsoil and loses the fertility of the soil.

Thus, the correct answers are both options (I) and (III).

7 0
3 years ago
A student places a small amount of water in a glass dish and then carefully places a small paperclip on the surface of the water
rosijanka [135]
Include: 
- Adding cleanser makes the paperclip fall through the water to the base of the dish. 
- Soap is a surfactant. 
- Surfactants lessen the surface pressure of a fluid. 
- The surface strain of water is the thing that upheld the paper cut.
3 0
3 years ago
Read 2 more answers
HELP PLEASE WILL GIVE BRAINLIEST
Crank

Answer:

Option D. Al is above H on the activity series.

Explanation:

The equation for the reaction is given below:

2Al + 6HBr —> 2AlBr₃ + 3H₂

The activity series gives us a background understanding of the reactivity of elements i.e how elements displace other elements when present in solution.

From the activity series of metals, we understood that metal higher in the series will displace those lower in the series.

Considering the equation given above, Al is higher than H in the activity series. Thus, the reaction will proceed as illustrated by the equation.

Therefore, we can conclude that the reaction will only occur if Al is higher than H in the activity series.

4 0
3 years ago
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