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3 years ago

What kind of adaptation are the ears on a rabbit

Chemistry

1 answer:

Jet001 [13]3 years ago

8 0

Answer:

Structural

Explanation:

Structural adaptions are the physical features of an organism that enable them to survive in their environment.

The rabbit’s long ears are an essential survival tool. They help the rabbit listen to the faint sounds made by nearby predators and their shape helps to detect sound direction accurately.

Also, if the rabbit lives in a hot desert, the large ears radiate heat, allowing it to control its temperature.

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How many atoms are in 766.3 grams of Li?

34kurt

1 mol of any substance is made of 6.022 x 10²³ units, these units could be atoms making up elements or molecules making up a compound.

In this case. 1 mol of Li is made of 6.022 x 10²³ atoms of Li

The molar mass of Li is 6.94 g/mol

Therefore mass of 1 mol of Li is 6.94 g

In 6.94 g of Li there are - 6.022 x 10²³ atoms

Then in 766.3 g of Li there are - 6.022 x 10²³ atoms / 6.94 g x 766.3 g = 665 x 10²³

There are 6.65 x 10^25 atoms of Li

6 0

4 years ago

The vapor pressure of water is 23.76 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in water is sucrose. Calculate

MrRissso [65]

Answer : The vapor pressure of solution is 23.67 mmHg.

Solution:

As the relative lowering of vapor pressure is directly proportional to the amount of dissolved solute.

The formula for relative lowering of vapor pressure will be,

$\frac{p^o-p_s}{p^o}=\frac{w_2M_1}{w_1M_2}$

where,

$p^o$ = vapor pressure of pure solvent (water) = 23.76 mmHg

$p_s$ = vapor pressure of solution= ?

$w_2$ = mass of solute (sucrose) = 12.25 g

$w_1$ = mass of solvent (water) = 176.3 g

$M_1$ = molar mass of solvent (water) = 18.02 g/mole

$M_2$ = molar mass of solute (sucrose) = 342.3 g/mole

Now put all the given values in this formula ,we get the vapor pressure of the solution.

$\frac{23.76-p_s}{23.76}=\frac{12.25\times 18.02}{176.3\times 342.3}$

$p_s=23.67mmHg$

Therefore, the vapor pressure of solution is 23.67 mmHg.

7 0

3 years ago

Name the following ketone:

Vinil7 [7]

Answer:

it is b step by step

Explanation:

8 0

3 years ago

1 name the kind of rock that needs heat and pressure to form

kicyunya [14]

1. <em>Metamorphic rocks form from heat and pressure changing the original or parent rock into a completely new rock.</em>

<em>2.</em>There are two basic types.

Intrusive igneous rocks crystallize below Earth's surface, and the slow cooling that occurs there allows large crystals to form.

Extrusive igneous rocks erupt onto the surface, where they cool quickly to form small crystals. Some cool so quickly that they form an amorphous glass.

3. Erosion is the wearing away of the land by forces such as water, wind, and ice. Erosion has helped to form many interesting features of the Earth's surface including mountain peaks, valleys, and coastlines. There are many different forces in nature that cause erosion.

4. • Frost and Salt Wedging. One of the more common forms of mechanical weathering is frost wedging. ...

• Unloading and Exfoliation. ...

• Water and Wind Abrasion. ...

5. Plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". This occurs in a type of glacier called a "valley glacier".

6. Rusting, a well known example of corrosion, is the breakdown of the metal iron. The reactants of this chemical reaction are iron, water, and oxygen, and the product is hydrated iron oxide, better known as rust. Rust, unlike iron, is crumbly, orange, and pretty much useless for building things.

7. rainfall made sufficiently acidic by atmospheric pollution that it causes environmental harm, typically to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels, the waste gases from which contain sulfur and nitrogen oxides, which combine with atmospheric water to form acids.

8. Magma that cools quickly forms one kind of igneous rock, and magma that cools slowly ...

9. When magma rises from deep within the earth and explodes out of a volcano, it is called lava, and it cools quickly on the surface. Rock formed in this way is called extrusive igneous rock.

10. When water becomes saturated with dissolved minerals, particles can crystallize out of the water and form minerals. Chemical rocks form when minerals crystallize directly from water.

11. Sugar dissolves faster in hot water than it does in cold water because hot water has more energy than cold water. When water is heated, the molecules gain energy and, thus, move faster.

12. Gypsum and halite

13. the repeating pattern of a mineral's particles forms a solid called a crystal. A crystal has flat sides, called faces, that meet at sharp edges and corners. a mineral has a definite chemical composition or range of compositions.

I hope this is what you’re looking for if not I’m very sorry :/

3 0

3 years ago

In a Dam, If we doubled the depth of the dam the hydrostatic force will be ?

AnnZ [28]

Answer: Option (A) is the correct answer.

Explanation:

Force acting on a dam is as follows.

F = $\frac{1}{2}\rho g\omega H^{2}$ .......... (1)