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leva [86]
2 years ago
14

Which terms are associated with the Cenozoic era: Homo sapiens, mammoth, dinosaur, grass?

Chemistry
1 answer:
abruzzese [7]2 years ago
4 0
Mammoths and dinosaurs lived in the Cenozoic era, and there was also grass. Your answers are Mammoth, dinosaur, grass.
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Pls help name any of these compounds​
Eva8 [605]

Answer:

D. Propanol

Explanation:

C3H7OH the presence of alcohol functional group makes it propanol

3 0
2 years ago
You are asked to go into the lab and prepare an acetic acid - sodium acetate buffer solution with a ph of 4.00  0.02. what mola
Oxana [17]
Hello!

To solve this problem we are going to use the Henderson-Hasselbach equation and clear for the molar ratio. Keep in mind that we need the value for Acetic Acid's pKa, which can be found in tables and is 4,76:

 pH=pKa + log ( \frac{[CH_3COONa]}{[CH_3COOH]} )

\frac{[CH_3COOH]}{[CH_3COONa}= 10^{(pH-pKa)^{-1}}=10^{(4-4,76)^{-1}}=5,75

So, the mole ratio of CH₃COOH to CH₃COONa is 5,75

Have a nice day!

5 0
3 years ago
Which of the following statements is true?
Ivan

Answer:

B.

Explanation:

Most metals can be drawn into a wire while nonmetals would break apart.

5 0
3 years ago
Read 2 more answers
A clear, pure liquid sample is brought into the lab and exposed to an electrical current. Different gases are
mel-nik [20]
I think it’s a d but I’m not sure
4 0
2 years ago
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Mario performed an experiment to investigate how certain substances dissolve in water. He poured the substances in separate beak
geniusboy [140]

Answer: Solubility

Explanation:

Solubility is the ability or property  of a solute which can be  a solid, liquid, or gaseous chemical substance to dissolve in a solvent (solid, liquid or gas) and form a solution. The factors that affect how soluble a substance is depends on the solvent ,temperature and pressure.

Here, Mario trying to dissolve certain substances (solutes) in water (the  solvent shows he is trying to find out the solubility of the substances which can be insoluble, sparingly soluble or very soluble.

8 0
2 years ago
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