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anyanavicka [17]
3 years ago
11

How to measure with SI UNIT

Chemistry
1 answer:
nordsb [41]3 years ago
8 0
The SI base units and their physical quantities are the metre for measurement of length, the kilogram for mass, the second for time, the ampere for electric current, the kelvin for temperature, the candela for luminous intensity, and the mole for amount of substance.
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Two alcohols, isopropyl alcohol and propyl alcohol, have the same molecular formula, C3H8O. A solution of the two that is two-th
iris [78.8K]

Answer:

1.

Since both components of these solutions have the same molar mass, mole fractions would be the same as mass fractions.

0.110 atm = (2/3)(Pi) + (1/3)(Pn) [1]

0.089 atm = (1/3)(Pi) + (2/3)(Pn) [2]

2*[1] - [2]:

(2)(0.110) - 0.089 atm = Pi

Pi = 0.131 atm

2*[2] - [1]:

(2)(0.089) - 0.110 atm = Pn

Pn = 0.068 atm

2.

The hydroxyl (-OH) group on the end of a longer 1-propanol molecule makes it more polar than IPA. It follows that the intermolecular forces between 1-propanol are stronger than those of IPA and thus the vapor pressure of 1-propanol should be lower than IPA.

Explanation:

5 0
3 years ago
The process where bacteria takes nitrogen out of the air and makes it usable for other organisms is called
Likurg_2 [28]

Answer:

The process is called Nitrogen fixation

Explanation:

The nitrogen fixation is a process carried out by some prokaryotic microorganisms (bacteria), specifically those have the presence of the nitrogenase enzyme. The bacteria absorb the atmospheric nitrogen (N2) from the roots of plants, and the nitrogenase enzyme, with the help of two proteins that act as electron donors and acceptors (nitrogenase complex) reduce the nitrogen to ammonia (NH3), then the ammonia is ionized to NH4+ (ammonium). Followed by that, the ammonia is oxidated to nitrates and nitrites, which are finally absorbed again by plants.

7 0
3 years ago
The most reactive metals are the ________ to corrode.
katrin [286]

Answer:

2. quickest

Explanation:

because they have lower activation energy.

3 0
3 years ago
A substance with a high pOH would likely have which of the following?
Anna [14]

Answer: a low OH^-  and low pH.

Explanation:

pH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

pH=-\log [H^+]

pOH=-log[OH^-]

pOH=log\frac {1}{OH^-}

Thus as pOH and OH^- are inversely related, a solution having higher pOH will have less amount of OH^- concentration. And a solution having more pOH will have less pH.

Thus a substance with a high pOH would likely have low OH^- concentration and low pH.

8 0
3 years ago
Read 2 more answers
What is the systematic name of NaCl​
alekssr [168]

Answer:

The answer is Sodium chloride.

Na is sodium and Cl is chlorine.

6 0
3 years ago
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