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gladu [14]
3 years ago
14

How does coffee keep you awake?

Chemistry
2 answers:
MrRa [10]3 years ago
7 0

Answer:

Caffeine

Explanation:

Caffeine is packed with protein that provides energy

ivanzaharov [21]3 years ago
4 0

Coffee keeps you awake due to the caffeine in it. Caffeine is considered a psychoactive drug which energizes people by releasing a chemical in the body.

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What is the molality (m) of a solution that contains 76.5 g of KCl dissolved in 85.0 g of<br> water?
ladessa [460]

Answer:

76.5g KCl/74.55 grams per mole Kcl = x

molality= x/.085 kg H2O

Explanation:

well remember molality is moles of solute/kilograms of solvent. So it's the moles of KCl over 85 g of h20 converted into kg. if this makes sense.

5 0
3 years ago
What do the numbers listed for an element on the periodic table represent?
Anna007 [38]
The smaller number is the number of protons, and the greater number is the mass.
8 0
2 years ago
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How to identify coplanar molecule?
lozanna [386]
See if the carbon atoms are SP2 or Sp they the coplanirty is more and if its Sp3 hybridization it cant be in coplanar as Sp3 is having Td shape where as sp2 and sp are not :)
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3 years ago
What is the definition of cleavage
aev [14]
A division or split


in biology a cell division
7 0
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If a solution has a pH of 2, what is the hydroxide ion concentration?
murzikaleks [220]

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A

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5 0
1 year ago
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