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
Ludmilka [50]
2 years ago
8

Calculate the average obtained from the following weighings of the same object. Do not forget to include formulas, units, and th

e right number of significant figures:
10.4375g , 10.4381g, 10.4373g, 10.4376g
Chemistry
1 answer:
bazaltina [42]2 years ago
6 0

Answer:

10.4376 g

Explanation:

First we <u>calculate the sum of the weighings</u>:

  • 10.4375 g + 10.4381 g + 10.4373 g + 10.4376 g = 41.7505 g

Then we <u>divide the sum by the number of weighings to calculate the average:</u>

  • Number of weighings = 4
  • Average = Sum of weighings / Number of weighings
  • 41.7505 g / 4 = 10.4376 g
You might be interested in
Lice are parasitic insects that live on the scalp, eyebrows, and eyelashes of humans
earnstyle [38]

Answer:

Most likely A

Explanation:

Its a more plausible answer

5 0
3 years ago
How many grams are in a sample of 0.55 mol of K?
Katyanochek1 [597]
The equation you use here is
mass =moles x Mr

So:
Moles of K - 0.55mol
Mr of K - 39.1

Mass= 0.55x39.1 =21.505g
4 0
3 years ago
365,000,000 scientific notation
bekas [8.4K]
3.65 X 10 to the power of 8
6 0
3 years ago
The pKb of the base cyclohexamine, C6H11NH2, is 3.36. What is the pKa of the conjugate acid, C6H11NH3
bonufazy [111]

Answer:

10.64

Explanation:

Let's consider the basic reaction of cyclohexamine, C₆H₁₁NH₂.

C₆H₁₁NH₂(aq) + H₂O(l) ⇄ C₆H₁₁NH₃⁺(aq) + OH⁻     pKb = 3.36

C₆H₁₁NH₃⁺ is its conjugate acid, since it donates H⁺ to form C₆H₁₁NH₂. C₆H₁₁NH₃⁺ acid reaction is as follows:

C₆H₁₁NH₃⁺(aq) + H₂O(l) ⇄ C₆H₁₁NH₂(aq) + H₃O⁺(aq)   pKa

We can find the pKa of C₆H₁₁NH₃⁺ using the following expression.

pKa + pKb = 14.00

pKa = 14.00 - pKb = 14.00 - 3.36 = 10.64

6 0
4 years ago
What can you say about the strength of the intermolecular forces in neon and argon based on the critical points of Ne and Ar? (c
algol13

Explanation:

Since, it is given that critical temperature of Argon is 150.9 K and critical pressure of Argon is 48.0 atm.

It is known that gas phase of neon occurs at 50 K. As the boiling point of Ar is more than the boiling point of neon which means that there is strong intermolecular force of attraction between argon molecules as compared to neon molecules.

This is also because argon is larger in size. As a result, induced dipole-induced dipole forces leads to more strength in Ar as compared to Ne.

8 0
3 years ago
Other questions:
  • What happens when an acid is added to pure water?
    8·1 answer
  • Compare and contrast chemical change and physical change.
    6·1 answer
  • Sulfurous acid is a diprotic acid with the following acid-ionization constants: Ka1 = 1.4x10−2, Ka2 = 6.5x10−8 If you have a 1.0
    5·1 answer
  • A kilogram is an SI unit. Which quantity might you measure in kilograms? temperature
    8·2 answers
  • 1.Explore two more isotopes and how it is useful in our day to day life.
    13·1 answer
  • Iron (III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3
    14·1 answer
  • How many molecules are in 4 moles of carbon monoxide (CO)?
    11·1 answer
  • 8. What was the original concentration in the BHL sample, if the dilution is 1:500 and the concentration 0.07 mg/ml
    10·1 answer
  • You are pushing a refrigerator of 150 kg with a force of 50 Newtons. By how
    5·1 answer
  • How does a graph show a runner at rest?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!