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3 years ago

Kamal was told by his mother to pour water through a thin cloth into another container to further purify the water.

Chemistry

1 answer:

Galina-37 [17]3 years ago

5 0

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a].When sand is added to water it either hangs in the water or forms a layer at the bottom of the container. Sand therefore does not dissolve in water and is insoluble. It is easy to separate sand and water by filtering the mixture.

b]. The water filtered by kamal is not safe to drink .

If you run out of water, or cannot carry enough water with you for your entire trip, you may need to source drinking water from natural water sources.

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Write one paragraph to explain what circuler motion is?

ZanzabumX [31]

Answer:

When a body moves in a circle with constant speed , it is said to be in uniform circular motion .

Explanation:

When an object moves in a circular path , its direction changes at each point .
This change in direction result in change of velocity (velocity is vector quantity which changes if direction of the object change) .However speed do not change (it is scalar quantity , not affected by Direction)

The Change in velocity produce acceleration ( a = v - u)

Hence The object always produce acceleration in uniform circular motion .So, Some force (centripetal force) is needed to keep the object in circular motion.

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3 years ago

Please help me!!!

V125BC [204]

Answer:

solid to liquid i think

Explanation:

entropy is natural disorder in simple terms- liquid the atoms are less organised than in a solid to increased entropy as they move apart becoming disordered

at least this is how i understand it

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3 years ago

in the future, clean energy sources, such as solar power, may be used to create hydrogen fuel true false

borishaifa [10]

False, b/c you can't turn electricity into a fuel

3 0

3 years ago

Read 2 more answers

One electron in an atom has the quantum number set (3, 1, 0, ½), and another electron in the same atom has the quantum number se

guapka [62]

There are four quantum numbers that describe the placement of electrons in an atom's electron cloud: principal quantum number (n), angular quantum number (l), magnetic quantum number (ml) and electron spin number (ms). When presented, they are written as (n, l, ml, ms).

From the given set, they have same n and l quantum numbers. The n represents the shell, the l as subshell, ml is the orientation in space and ms is the direction of the spin. Therefore, these two electrons of the atom share a subshell but differ in the shape of the orbital only.

3 0

4 years ago

The number of water molecules per ionic molecule in a hydrate is called the ___________. A. electronegativity B. anhydrous numbe

arlik [135]

Answer:

C. hydration number

Explanation:

When we dissolve an ionic compound (a charged species) the charges can interact with the water molecule. In the case of cations (positive charges) the negative dipole of water (generated in the oxygen) will interact with the positive charge at the same time the anions (negative charges) the positive dipole of water (generated in the hydrogen).

The amount of water molecules that can interact with a single ion (cation or anion) is called hydration number. In the example, we have a hydration number of "4" for the sodium cation.

I hope it helps!

8 0

3 years ago