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3 years ago

Why are diamonds unevenly distributed on Earth?

Chemistry

1 answer:

tatuchka [14]3 years ago

8 0

Answer:

Why aren't diamonds found evenly distributed on Earth? Diamonds are only formed under specific conditions that involve geological processes, such as volcanic activities and plate movements. Since these conditions and processes only take place in certain areas, you can only find diamonds in these special places.

Explanation:

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Which of the following would be the best soil for gardening?

Evgen [1.6K]

Answer:

Explanation:

Silt is very benifical for plant growth. So the one with the most silt would be the best for gardening soil.

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3 years ago

Read 2 more answers

Which is the basis of thin-layer chromatography?

solmaris [256]

Answer:

B.) The drug gets carried through a stationary phase by a mobile phase and the retention time identifies the drug.

Explanation:

Chromatography is used in purifying complex mixtures of organic compounds. It uses the adsorption tendencies of compounds to seperate and identify them.

Chromatography is made up of two phases in contact, the stationary phase or non-mobile phase and the mobile phase. The movement of the mobile phase over the stationary phase causes the separation of a mixture into its constituents.

The stationary phase is made up of silica-gel or alumina in a solvent (an adsorbent) and the mobile phase or carrier is the organic solvent which is the drug.

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4 years ago

What is described in the following equation?

Alexus [3.1K]

Answer:

A. Hydrogen gas combining with oxygen gas to form water.

Explanation:

H2 is the symbol for Hydrogen in gaseous state and O2 is the symbol for Oxygen in gaseous state. H2O is the chemical formula of Water. It is clearly indicated in the equation that Hydrogen and Oxygen combining to form Water.

The arrow to the water indicate that the water is the product and it is NOT the decomposition reaction.

8 0

4 years ago

17. How many moles are there in a sample containing 1000 molecules of H2O?18. If you wanted a sample of H2O containing 6 x 23mol

Viefleur [7K]

17) mol of $H_{2}O$ = $\frac{no. of molecule}{L}$
= $\frac{1000 molecules}{6.03 * 10^{23} molecules/mol }$
= 1.658 *    $10^{-21} mol$

18) mol = $\frac{molecule}{L}$
   $\frac{Mass}{Mr} = \frac{Molecule}{L}$
Let mass of oxygen = x
   $\frac{x}{(2 * 1) + (16)} = \frac{6 * 10^{23} }{6.03 * 10^{23} }$
$x = (6 * 10^{23} ) (18 g/ mol)$
= 17.9 g

3 0

4 years ago

According to newton law graviton which statement are true

valina [46]

Answer:

how are we supposed to answer with no choices?

7 0

3 years ago