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Marianna [84]
3 years ago
14

Gastric juice in the stomach contains pepsin and sulfuric acid. TrueFalse

Chemistry
1 answer:
jonny [76]3 years ago
5 0
False, pepsin and hydrochloric acid
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When the moon is between the earth and the sun what moon phase will this be
olga55 [171]

Answer: New Moon Phase

Explanation:

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3 years ago
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A student chromatographs a mixture and after developing the spots with a suitable reagent he observes the following
Anika [276]

Rf value is the ratio of the distance traveled by the solute to that of the solvent front on the paper used in chromatographic separation.

From the image it is clear the distance traveled by solvent front = 7.3 cm

Distance traveled by the component -1 of the mixture = 1.4 cm

Distance traveled by the component -2 of the mixture = 3.0 cm

Distance traveled by the component -3 of the mixture = 4.5 cm

Distance traveled by the component -4 of the mixture = 6.5 cm

Rf value of component-1 = \frac{1.4 cm}{7.3 cm} =0.192

Rf value of component-2 = \frac{3.0 cm}{7.3 cm} =0.410

Rf value of component-3 = \frac{4.5 cm}{7.3 cm} =0.616

Rf value of component-4 = \frac{6.5 cm}{7.3 cm} =0.890

b) Samples can be separated from a mixture using chromatography as the relative affinities for the compounds towards the paper (stationary phase) and the solvent(mobile phase) are different. Each component spends different amounts of time on the stationary phase depending on it chemical nature. So, the components in a mixture can be separated based on their polarities and relative degrees of adsorption on the stationary phase.








6 0
3 years ago
Please help! ill give medal
weeeeeb [17]
An example of a general formula of an acid is
<span>HCl

This is called as hydrochloric acid or hydrogen chloride.

H represents for the atom of Hydrogen
and Cl represents for the atom of Chlorine

Since their charges are -1, and +1, it's ratio is 1:1</span>
3 0
3 years ago
What type of compound is fe3n2?
Kobotan [32]
I believe the type of compound fe3n2 is ionic. 
3 0
3 years ago
What are two characteristics of acids
Olenka [21]
<span>Here are some

pH < 7
Sour taste (though you should never use this characteristic to identify an acid in the lab)
Reacts with a metal to form hydrogen gas Increases the H+ concentration in water
Donates H+ ions<span>
Turns blue litmus indicator red</span></span>
3 0
3 years ago
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