2 years ago

The community of a pond is made up of all the...

Chemistry

1 answer:

madam [21]2 years ago

3 0

The surrounding ecosystem in and around the water

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An atom has 24 protons, 22 electrons, and 28 neutrons. What is the ATOMIC # of the atom?

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22 would be the answer

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What would happen if the cell cycle stopped in a multicellular organism

oksano4ka [1.4K]

The organism would no longer grow.

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Crazy boy [7]

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The four nitrogenous bases present in DNA are adenine (A), guanine (G), cytosine (C) and thymine (T).

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3 years ago

A weighed piece of magnesium ribbon is added to a dried crucible, which is reweighed and heated in air to form the compound MgO.

olga nikolaevna [1]

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One of the errors for low percentage of magnesium could be because not all the magnesium may have reacted.

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During the heating process, if the magnesium have not reacted completely, it can lead to low percentage of magnesium in the oxide formed. The product may still look a bit greyish rather than whitish after the heating process.

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3 years ago

A scientist finds that one volume of an unknown gas X combines with two volumes of another gas Y to form two volumes of a new ga

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Gas X

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The given reaction can be written in the form of chemical equation as shown below as:

$X+2Y\rightarrow 2XY_2$

According to law of conservation of mass, the moles of each substance in the reaction must be equal on both reactant and product side.

Also, the question asks for the gas which is diatomic. $XY_2$ cannot be diatomic as the formula contains 3 atoms.

Between gas X and gas Y , <u>X has to be diatomic for the reaction to balance </u>as:

$X_2+2Y\rightarrow 2XY_2$

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