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Alexeev081 [22]
3 years ago
7

Who made. Accurate atomic weight determination’s

Chemistry
1 answer:
lana66690 [7]3 years ago
6 0

Theodore Richards;  first scienstist to recieve nobel prize in Chemistry, earning the award "in recognition of his exact determinations of atomic weights of a large number of chemical elements."

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PLEASE HELP!!! WILL MARK BRAINLIEST!
fredd [130]

The longest chain of carbons will contain the highest number of carbon atoms.

Explanation:

question 3 - the longest chain have 7 carbon atoms

question 4 - the longest chain have 8 carbon atoms

question 1 - the longest chain have 5 carbon atoms

You may find in the attached picture the longest chain colored in blue for each of the compounds.

Learn more about:

longest carbon chain

brainly.com/question/4859077

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5 0
3 years ago
How many total atoms are in 0.680 g of P₂O5?
Ludmilka [50]

Answer: 2.88×10^{24}atoms P_{2}O_{5}

Explanation: First, using stoichiometry, we must convert this from grams to moles, then from moles to atoms.

1. For the first step, we should also look at the periodic table to find the molar mass of the compound, then use that as the denominator.

0.680g P_{2} O_{5} *\frac{1molP_{2} O_{5} }{141.948gP_{2} O_{5} } =4.79mol P_{2} O_{5}

2. Now that it is converted to moles, we must convert it to atoms by multiplying it by Avogadro's number.

4.79molP_{2} O_{5} *\frac{6.022X10^{23} }{1mol} =2.88*10^{24}

With this information, we know that there are 2.88X10^{24} total atoms in 0.680 grams P_{2} O_{5}.

I hope this helps! Pls give brainliest!! :)

8 0
2 years ago
White-tailed deer eat green plants, acorns, fruits, nuts, and twigs.
ICE Princess25 [194]
D Hetero-tropic herbivore <span />
4 0
3 years ago
Read 2 more answers
Which statements correctly describe light (Select all that apply)
egoroff_w [7]

Answer:

The correct answers are C and D.

6 0
2 years ago
Whats the difference between hetergeneous and homogeneous?
yanalaym [24]
In Homogeneous, "Homo" means same, so homogeneous means the same nature or kind.

 Heterogeneous is the opposite. It means diverse.
 
A good way to remember is just think of homo as same. And the rest should come to you.

Hope this helps! :)
4 0
3 years ago
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