1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Shalnov [3]
3 years ago
10

Is this example of a direct proportion or an inverse proportion?

Chemistry
1 answer:
ivanzaharov [21]3 years ago
6 0

Answer:

Inverse proportion occurs when one value increases and the other decreases. For example, more workers on a job would reduce the time to complete the task. They are inversely proportional.

You might be interested in
Using a 300 MHz NMR instrument:
Softa [21]

Answer:

a. 750Hz, b. 4.0ppm, c. 600Hz

Explanation:

The Downfield Shift (Hz) is given by the formula

Downfield Shift (Hz) = Chemical Shift (ppm) x Spectrometer Frequency (Hz)

Using the above formula we can solve all three parts easily

a. fspec = 300 MHz, Chem. Shift = 2.5ppm, 1MHz = 10⁶ Hz, 1ppm (parts per million) = 10⁻⁶

Downfield Shift (Hz) = 2.5ppm x 300MHz x (1Hz/10⁶MHz) x (10⁻⁶/1ppm)

Downfield Shift = 750 Hz

The signal is at 750Hz Downfield from TMS

b. Downfield Shift = 1200 Hz, Chemical Shift = ?

Chemical Shift = Downfield shift/Spectrometer Frequency

Chemical Shift = (1200Hz/300MHz) x (1ppm/10⁻⁶) = 4.0 ppm

The signal comes at 4.0 ppm

c. Separation of 2ppm, Downfield Shift = ?

Downfield Shift (Hz) = 2(ppm) x 300 (MHz) x (1Hz/10⁶MHz) x (10⁻⁶/1ppm) = 600 Hz

The two peaks are separated by 600Hz

6 0
2 years ago
The difference between the boiling point of a pure solvent and the boiling point of a solution of a nonelectrolyte in the same s
Sati [7]
Answer: A) Boiling-Point Elevation
6 0
2 years ago
Which type of matter can be separated by physical means? A. atom B. element C. compound D. mixture
madreJ [45]

Answer:

b

Explanation:

A pure substance has a constant composition and cannot be separated into simpler substances by physical means. There are two types of pure substances: elements and compounds.

7 0
2 years ago
Read 2 more answers
Hi, my question is not answer, please
Oksanka [162]
Okay, pls give brainliest because I answered the fastest and how are you?
4 0
3 years ago
Find the vapor pressure of a water solution in which the
zheka24 [161]

Answer:

The vapor pressure in solution is 0,0051 atm

Explanation:

This is the formula for vapor pressure lowering, the colligative property.

P vapor = Pressure sv pure . Xsv

Where Xsv is data.

Xsv means Molar fraction (moles solvent/total n° moles)

Vapor pressure of water, pure is 17.5 mmHg

P vapor = 0,0313 atm . 0163

P vapor in solution = 0,0051 atm

Molar fraction does not have units

A solution will have less vapor pressure than that observed in the pure solvent.

5 0
3 years ago
Other questions:
  • What is thermal energy?
    8·1 answer
  • Iodine would have chemical properties most like -
    12·1 answer
  • What happens if you consume bleach?
    6·1 answer
  • 80.0 mL of 0.30 M NaOH and 80.0 mL of 0.30 M HCl are mixed together. What is the approximate pH
    10·1 answer
  • What is the molarity of 2.3 mol of Kl dissolved in 0.5 L of water
    10·1 answer
  • Which is the BEST definition for a chemical ? *
    10·1 answer
  • Potassium and bromine draw the charges swapping charges formula and name
    15·1 answer
  • Gases Test<br> Chemistry
    5·1 answer
  • What is the energy of an electron in a Li+ ion when an electron moves from n = 2 to n =3?
    15·1 answer
  • Which statement is true about the law of reflection?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!