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gtnhenbr [62]
3 years ago
12

If two substances travel up the chromatography paper this implies that

Chemistry
1 answer:
Colt1911 [192]3 years ago
6 0

Answer:

They are seperating

Explanation:

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Lakes that have been acidified by acid rain can be neutralized by limiting the addition of limestone how much limestone is requi
svet-max [94.6K]
From the given pH, we calculate the concentration of H+:
     [H+] = 10^-pH = 10^-5.5
We then use the volume to solve for the number of moles of H+:
     moles H+ = 10^-5.5M * 4.3x10^9 L =  13598 moles
From the balanced equation of the neutralization of hydrogen ion by limestone written as
     CaCO3(s) + 2H+(aq)  → Ca2+(aq) + H2CO3(aq)
we use the mole ratio of limestone CaCO3 and H+ from their coefficients, which is 1 mole of CaCO3 is to react with 2 moles of H+, to compute for the mass of the limestone:
     mass CaCO3 = 13598mol H+(1mol CaCO3/2mol H+)
                               (100.0869g CaCO3/1mol CaCO3)(1kg/1000g) 
                            = 680 kg
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3 years ago
An investigator is gathering evidence and picks up a shirt that is covered in blood and is not yet dry. After bagging the eviden
ratelena [41]

Answer:

She should search for DNA

Explanation:

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3 years ago
A sentence for front in science words?
Ludmilka [50]
“Students studied the weather front that caused the recent hurricane”
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4 years ago
Batteries work by letting charged ions flow through an electrolyte solution.
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Answer:

Batteries work by letting charged ions flow through an electrolyte solution.

A battery is a device that consists of one or more electrochemical cells that can convert stored chemical energy into electrical current. Each cell consists of a positive electrode, or anode, a negative electrode, or cathode, and electrolytes that allow ions to move between the electrodes, allowing current to flow out of the battery to carry out its function.

Explanation:

Its operation is essentially based on a reversible chemical process called reduction-oxidation, in which one of the components is oxidized and the other is reduced; that is, a process whose components are neither consumed nor lost, but merely change their oxidation state, and which in turn can return to their original state under the right circumstances.

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Selma made an error while creating a chart to describe the technological design process for a new vacuum. Which best describes h
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D

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