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
Phantasy [73]
3 years ago
9

What three obstacles did dmitri mendeleev face in his life

Chemistry
2 answers:
Mama L [17]3 years ago
8 0
<span>~He was working without prior knowledge toward creating a periodic table of elements that had been done in Europe in the 1860s

~ scandal when he got married to his second wife before he divorced his first wife

~he was working with data that was not very precise (technology didn't exist at the time to make accurate measurements (e.g., weights) for the things he was working on.) Many elements had also not been discovered yet, so he had to guess at a lot of things when making his conclusions. </span>
OLga [1]3 years ago
6 0

Answer:

Answered

Explanation:

1. He married his second wife before giving divorce to his first wife. This made him an outsider in the scientific community making it difficult for him to raise funds for the research.

2. Back then there were no precise measuring instruments, so it was difficult for him to measure correct data. Many of the elements were yet to be discovered, so he guessed and by fortune most of his guesses were right.

3.The elements that were not discovered at that time, he left blank spaces for them.  

You might be interested in
Helpppp!!!
OlgaM077 [116]

Answer:

your answer would be E

Explanation:

I took that class

3 0
3 years ago
Read 2 more answers
What is the name of the gas produced when nitric acid is added to copper metal? please help! much appreciated!
Lemur [1.5K]
The answer to your question is nitrogen dioxide

8 0
3 years ago
The chief advantage of the metric system over other system of measurement is that it
kolbaska11 [484]

Answer:

The metric system goes by powers of ten, so it's very easy to measure. That would be the main advantage, measurements of ten. We can also say it's the most used measurement around the world, so all scientists have little to no conversion, but the main answer is probably the first one :)

6 0
3 years ago
For the reaction, identify the Lewis acid and the Lewis base.<br> AlF3 + CH3F → CH3+ + [AlF4]-
Ivanshal [37]
Answer:
            AlF₃ is Lewis Acid

            CH₃F is Lewis Base

Explanation:
                     According to Lewis concept ,"those compounds which donate pair of electrons are called as Lewis Base and those accepting pair of electrons are called as Lewis Acid.

In Given Reaction,
<span>                               AlF</span>₃<span> + CH</span>₃<span>F → CH</span>₃⁺<span> + [AlF</span>₄<span>]</span>⁻

AlF₃ is acting as acid because the octet of Al is not complete, hence it has tendency to accept electrons.

CH₃F is acting as a base because the F atom containing three lone pair of electrons can donate it to Al metal resulting in the formation of electrophile i.e. CH₃⁺.
5 0
3 years ago
If you put a pencil in a cup of water, it looks as if it is broken and larger in the water. This is because light waves A) can r
tekilochka [14]

Your answer should be C. bend when passing from air to water. Hope this helps! =^-^= If you need an explanation, just let me know.

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the law of redox reactions?
    7·1 answer
  • Will mark brainliest 35 pts
    15·1 answer
  • The half-life of a certain element is 100 days. How many half-lives will it be before only one-eighth of this element remains?
    15·1 answer
  • What must be done to the following half-reactions before they can be added together?Mn (s) → Mn 2+ (aq) + 2e − Fe 3+ (aq) + 3e −
    6·1 answer
  • What type of molecular attraction accounts for the high boiling point of H2O
    10·1 answer
  • 1
    10·1 answer
  • All of the following are examples of electrolytic solutions, except __.
    12·2 answers
  • The drawing below was sketched by a student who was observing cells under a microscope. The cell is classified as
    8·1 answer
  • In humans, these organs are part of a larger system, the ________ system.
    8·1 answer
  • a chemist dissolved an 11.9-g sample of koh in 100.0 grams of water in a coffee cup calorimeter. when she did so, the water temp
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!