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Nata [24]
2 years ago
9

A student measures the time it takes for two reactions to be completed.

Chemistry
2 answers:
dexar [7]2 years ago
6 0

Answer:

C. The rate of reaction B is lower

Studentka2010 [4]2 years ago
5 0

Answer:

c

Explanation:

because the left side of reactant is take more time to make a product than the first

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Define the term macromolecule
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Explanation:

a molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.

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2 years ago
How many molecules of BH3 are in 14.32 grams of BH3?
kkurt [141]

Answer:

6.23 x 10^23 molecules

Explanation:

First find the number of moles of BH3 from the information given. We know the amount of grams present and we can find the molar mass which is 13.84.

We know that moles is grams divided by molar mass so we get 14.32/13.84 which is 1.03 moles.

Finally, to figure out the number of molecules, we multiply 1.03 by Avogadro's number which is 6.022x10^23 and we get 6.23x10^23 molecules.

3 0
3 years ago
Do the alkali metals tend to gain or lose electrons in chemical reactions?
timofeeve [1]
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3 years ago
Object A has a mass of 600 kg. Object B has a mass of 200 kg. They are both pushed with 10 Newtons of
yulyashka [42]

Answer: D

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A has more kg/mass than B

8 0
2 years ago
Read 2 more answers
How many atoms exist in 100.0 grams of lithium
Feliz [49]
Mass of Li: 6.94 g Li
Conversion relationship: 1 mole Li=6.94 g Li
100.0 g Li 1 mole Li
---------- x ---------- = 14.4 moles Li
1 6.94 g Li
Conversion relationship: 1 mole Li=6.02x10^23 atoms Li
14.4 moles Li 6.02x10^23 atoms Li
-------------- x ----------------------- = 8.67x10^24 atoms Li
1 1 mole Li
3 0
2 years ago
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