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BigorU [14]
2 years ago
5

The rainforest contains what v percentage of all of the species in the world

Chemistry
2 answers:
Nana76 [90]2 years ago
7 0

Answer:

50%

Explanation:

Please let me know if its right.

rosijanka [135]2 years ago
6 0
50% I’m pretty sure
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Elaborate on the nuclear model of the atom. The nuclear model describes the atom as protons and neutrons distributed throughout
n200080 [17]

Answer:

D.) The nuclear model describes the atom as a dense, positive nucleus surrounded by a cloud of negative electrons.

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A 160g radioactive sample is left undisturbed for 12.5 hours. At the end of that period, only 5.0g remain. What is the half-life
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it would be 26 because once you divide 160g by 5.0g and add 12.5 you would get 26

hope this helps

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Fill in the coefficients that will balance the following reaction:
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2NaCl + 1CaS →1Na2S + 1CaCl2
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3 years ago
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Discuss why the solubility of CaCO33(s) would be greater in distilled water than in tap water that contains 50 mg/L of calcium i
Neporo4naja [7]

The greater, the ionic property, the greater will be solubility. water is a covalent compound where calcium carbonate is ionic that's why the solubility of CaCO_{3}(s) would be greater.

<h3>What is solubility?</h3>

The capability of a substance, the solvent, to combine with another substance, the solvent, has been known as solubility. Insolubility, or just the solute's inability to create that kind of a solution, would be the opposite attribute.

<h3>How does solubility depend on the ionic compound?</h3>

Ionic chemicals dissolve readily in just about any liquid that has the ability to rupture the ionic link present in them. Since water itself has a stronger ionic bond and is still polar in nature, water disrupts the ionic link by hydrogen bonding. Several other solvents, like kerosene and gasoline, are unable to dissolve the ionic bond.

The greater, the ionic property, the greater will be solubility. water is a covalent compound where calcium carbonate is ionic that's why the solubility of CaCO_{3}(s) would be greater in distilled water than in tap water that contains 50 mg/L of calcium ions

To know more about solubility.

brainly.com/question/8591226

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2 years ago
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Determine the theoretical maximum moles of hydroquinone, , that could be produced in this experiment. The reactant, quinone, is
dedylja [7]

Answer:

Theoretical maximum moles of hydroquinone: 0.2167 mol.

Explanation:

Hello,

In this case, the undergoing chemical reaction is like:

Quinone\rightarrow Hydroquinone

In such a way, since the molar mass of quinone is 108.1 g/mol and it is in a 1:1 molar ratio with hydroquinone, we can easily compute the theoretical maximum moles of hydroquinone by stoichiometry:

n_{hydroquinone}=23.4g\ quinone*\frac{1mol\ quinone}{108.1 g\ quinone}*\frac{1mol\ hydroquinone}{1mol\ quinone}  \\\\n_{hydroquinone}=0.2167mol

Clearly, this is the theoretical yield which in grams is:

m_{hydroquinone}=0.2167mol*\frac{110.11g}{1mol} =23.84g

Which allows us to compute the percent yield as well since the obtained mass of the product is 13.0 g:

Y=\frac{13.0g}{23.84g}*100\%=54.5\%

Best regards.

8 0
3 years ago
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