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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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Select all the correct answers.

8_murik_8 [283]

There should be a sufficient amount of the selected isotope in the rock.

The half-life of the isotope must be long enough to capture the age of the rock.

Explanation:

Sully must consider two main aspect before selecting her choice isotope for dating.

There must be sufficient amount of the selected isotope in the rock.

The half - life of the isotope must be long enough to capture the age of the rock.

Radiometric dating gives a rock an absolute numerical age.
The half-life of an isotope is time take for half of a radioactive element to decay.
If the half-life of an isotope is very short, all the parent nuclide would have turned to daughter nuclides.
Also, we must have sufficient amount of both the daughter and parent isotope in the selected rock.

learn more:

Radiometric dating brainly.com/question/7022607

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7 0

2 years ago

most planets have --- but none has a --- like earth does. A. a biosphere; hydrosphere., B. an atmosphere; cryosphere., C. an atm

liraira [26]

C. is the answer. i know because i had this question not that long ago.

5 0

3 years ago

Read 2 more answers

Which ionic compound is soluble in water pbbr2, fe (oh)3,ca(no3)2, baso4?

Anton [14]

Ionic compound are those compounds which are made up of ions. The ion which has tendency to loose electrons is said to cation (positive charge) such as metals whereas ion which has tendency to gain electrons is said to anion (negative charge) such as non-metals.

Calcium nitrate is quite soluble in water due to very low lattice enthalpy in comparison to other ionic compound. With lower lattice enthalpy, less energy is required for the dissociation of calcium nitrate and it get dissolves in water than other three compounds. Moreover, hydration energy is higher for calcium nitrate which make its solubility higher in water than other ionic species.

Thus, $Ca(NO_{3})_{2}$ is correct answer.

5 0

2 years ago

Rank the following substances in order from most soluble in water to least soluble in water: methane, CH4; 2-butanol, C4H9OH; ma

Taya2010 [7]

Answer: The given substances are placed in order from most soluble in water to least soluble in water as follows.

$MgCl_{2}$ > $C_{4}H_{9}OH$ > $C_{3}H_{8}$ > $CH_{4}$

Explanation:

It is known that like dissolves like which means a polar compound will be soluble in a polar solvent. And, a non-polar compound will be soluble in non-polar solvent.

Ionic compounds are soluble in polar solvent like water. For example, $MgCl_{2}$ is an ionic compound and it is readily soluble in water.

2-butanol ( $C_{4}H_{9}OH$ ) is also a polar compound and it will also dissolve in water but to a lesser extent as compared to magnesium chloride.

Whereas both methane and propane are non-polar in nature. But as propane is larger in size as compared to methane so, it will be slightly more soluble in water as compared to methane.

Thus, we can conclude that the given substances are placed in order from most soluble in water to least soluble in water as follows.

$MgCl_{2}$ > $C_{4}H_{9}OH$ > $C_{3}H_{8}$ > $CH_{4}$

5 0

3 years ago

Provide only the major alkene product that results when n,n-dimethylhexan-2-amine undergoes cope elimination?

Fofino [41]

The major alkene product that results when n,n-dimethylhexan-2-amine undergoes cope elimination is hexene or hex-1-ene.

The reaction in which an amine is oxidize to an intermediate called an N-oxide which , when heated , acts as base in an intramolecular elimination reaction. The oxidation of tertiary amine into N-oxide is called cope reaction.

This elimination gives the less substituted alkene along with more substituted alkene which is Zaitsev product.

Example: Cope elimination of n,n-dimethylhexan-2-amine form hexene.

To learn more about alkene ,

brainly.com/question/13910028

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5 0

1 year ago