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kondor19780726 [428]
3 years ago
11

hat historical figure was responsible for developing the system for categorizing living things that is still used today? A) Sir

Isaac Newton B) Carolus Linnaeus C) Benjamin Franklin D) Galileo
Chemistry
1 answer:
VladimirAG [237]3 years ago
3 0

Carolus Linnaeus is responsible.


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zhenek [66]

Answer:

i am not sure but its 2 ican"t qry

Explanation:

6 0
3 years ago
A buffer solution is composed of 7.50 mol of acid and 4.75 mol of the conjugate base. If the pKa of the acid is 4.90 , what is t
Mamont248 [21]

Answer:

The correct answer is: pH= 4.70

Explanation:

We use the <em>Henderson-Hasselbach equation</em> in order to calculate the pH of a buffer solution:

pH= pKa + log   \frac{ [conjugate base]}{[acid]}

Given:

pKa= 4.90

[conjugate base]= 4.75 mol

[acid]= 7.50 mol

We calculate pH as follows:

pH = 4.90 + log (4.75 mol/7.50 mol) = 4.90 + (-0.20) = 4.70

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3 years ago
5.4x10^3x1.2 x 10^7 in scientific notation
BartSMP [9]

6.4*10^10 is the answer in scientific notation


5 0
3 years ago
Why doesnt iron burst into flames when it rusts
Katarina [22]
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3 0
3 years ago
A radiator contains 10 quarts of fluid, 30% of which is antifreeze. how much fluid should be drained and replaced with pure anti
amm1812
Let x be the volume of fluid removed and the volume of pure antifreeze that is added. The concentration of antifreeze in the fluid is 0.3, the concentration in pure antifreeze is 1 and that in the final solution is 0.4 The volume of the final solution is 10.
(10 - x)(0.3) + x = 10(0.4)
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x = 1/7 quarts

The volume that should be drained is 1/7 quarts
3 0
3 years ago
Read 2 more answers
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