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bearhunter [10]
3 years ago
10

Enter the expression 14/7N +a

Chemistry
1 answer:
choli [55]3 years ago
3 0
2n+a is the simplified expression
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What is the percent by mass of oxygen in carbon dioxide
san4es73 [151]
C = 12
O2 = 16*2= 32
CO2 = (12)+(16*2) = 44

32/44*100 = 72.73%
6 0
4 years ago
(2pts) During the Purification of Lactate Dehydrogenase (LDH) experiment, you will need 50ml of buffer A150. Buffer A150 is 30mM
torisob [31]

Answer:

The answer is "20 \ mL"

Explanation:

Given:

Molarity= number of moles

because it is 1 Liter

\to \frac{0.03\ moles}{1.5 moles}=0.02\ L= 20 \ mL \ of\  Tris\\\\

therefore,

it takes 20 mL of Tris.

\to \frac{0.150 \ moles}{5\ moles} =0.03\ L\\\\

                     = 30 \ mL \ of\ Nacl

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6 0
3 years ago
Why Mike the helium balloons float while the others rest on the table
svetlana [45]

Helium is a chemical element of the atomic number 2, an inert gas that is the lightest member of the noble gas series.


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4 0
4 years ago
Which set of reagents will best convert 2,2-dimethylpropan-1-ol (neopentyl alcohol) to 4,4-dimethylpentan-2-ol
Sladkaya [172]

Answer:

SOCl2, Mg, CH3CHO, H3O^+

Explanation:

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The Grignard reagent reacts with CH3CHO and acid  to yield  4,4-dimethylpentan-2-ol as shown in the image attached to this answer.

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3 years ago
The lithosphere and the asthenosphere are made up of solid,liquid,or gas?ASAP
REY [17]
Gas, hope this helps
5 0
3 years ago
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