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professor190 [17]
3 years ago
11

Can someone help me?

Chemistry
1 answer:
Natalka [10]3 years ago
8 0
Answer 19.9g. I’ve took the test last week at my uncle randy’s house
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Considering how small atoms are, what are the chances that at least one of the atoms exhaled in your first breath will be in you
STatiana [176]

The answer is very probable because of how incredibly small atoms are

Very probable because of how incredibly small atoms are the chances that at least one of the atoms exhaled in your first breath will be in your last breath.

Hydrogen and oxygen always react in a 1:8 ratio by mass to form water. early investigators thought this meant that oxygen was 8 times more massive than hydrogen.

If you say that something is probable, you mean that it is likely to be true or likely to happen.

Everything around us is made up of really tiny molecules. However, such molecules are constructed from much smaller atoms. Then, even smaller protons, neutrons, and electrons are used to build those atoms. Quarks, which are even smaller particles than protons, make up protons.

The smallest unit of substance that may be disassembled without ejecting any electrically charged particles is the atom. The smallest piece of substance that displays an element's distinctive qualities is an atom. As a result, the atom serves as the basic unit of chemistry.

Learn more about smaller atoms brainly.com/question/28256098

#SPJ4

3 0
2 years ago
Larry bought 12 1/2 pounds of candy to share with his friends. If he gave each friend 2 1/2 pounds of candy, how many friends di
arlik [135]

Answer:

The answer to your question is: 5 friends

Explanation:

Data

Larry bought 12 1/2 pounds of candy

gave each friend 2 1/2 pounds

number of friends = ?

Process

Convert mixed fractions into improper fractions

           12 1/2 = (24 + 1) / 2 = 25 /2

            2 1/2 = (4 + 1) / 2 = 5/2

Divide the fractions

                                \frac{25}{2}  / \frac{5}{2}

                                = \frac{50}{10}

                               = 5

Larry gave candies to 5 of his friends

4 0
3 years ago
Why do chromosomes condemce before cell division ​
Vlad [161]

Answer:This condensation is needed to allow the chromosomes to move along the mitotic spindle without becoming tangled or broken during their distribution to daughter cells. DNA in this highly condensed state can no longer be transcribed, so all RNA synthesis stops during mitosis.

Explanation: This condensation is needed to allow the chromosomes to move along the mitotic spindle without becoming tangled or broken during their distribution to daughter cells. DNA in this highly condensed state can no longer be transcribed, so all RNA synthesis stops during mitosis.

8 0
3 years ago
The fuel used in many disposable lighters is liquid butane, C4H10. Butane has a molecular weight of 58.1 grams in one mole. How
viktelen [127]
The exact molecular mass for butane (C4H10) is 
12.0096*4+1.0079*10=58.1174  which is 58.1 to 3 significant figures.

Proportion of carbon in the compound
12.0096*4: 58.1174
=>
48.0384 : 58.1174

The mass of carbon in 2.50 grams of butane can be obtained by proportion, namely
Mass of carbon
= 2.50 * (48.0384/58.1174)
= 2.0664
= 2.07 g (approximated to 3 significant figures)

4 0
3 years ago
What is the mass of 0.25 mol of sulfur atom
tatiyna

Answer:

8.0 g

Explanation:

To convert moles to grams, you need to use the molar mass.  The molar mass of sulfur is 32.06.  The molar mass is the atomic mass of the atom.

(0.25 mol) × (32.06 g/mol) = 8.015 g

Round for significant figures.

8.015 g ≈ 8.0 g

6 0
4 years ago
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