The longest chain of atoms in a particular molecule consist of seven carbon atoms. Which name might this molecule be called?A. butane
B. ethylene
C. heptyne
D. Septane

Answers

Answer 1

Answer:

Answer

Option C - Heptyne

Explanation

The longest chain of atoms in a particular molecule consists of seven carbon atoms. This molecule might be called heptane (C7H16). It can be a straight chain or can be branched. Its structure is -C-C-C-C-C-C-C-. Carbon completes its four bonds by combining hydrogen atoms. Hydrocarbons are named according to the carbon atoms. One carbon atom is methane, two containing is ethane, three is propane, four is butane, five is pentane, six is hexane, seven is heptane, eight is octane, nine is nonane and ten is decane.

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Which atomic number corresponds to the element which is most stable?1
3
8
16
36

Answers

Answer:

Explanation:

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PLEASE MARK AS BRAINLIEST !!!!

Answer:

Explanation:

This is a simple answer, but I assure you that it is 100% correct.

Hope this helps you.

What is the color of the indicator thymol blue in a solution that has a pH of 11?(1) red (3) pink

(2) blue (4) yellow

Answers

Answer is (2) - blue.

Thymol blue is a pH indicator which 3 colors according to the pH.

Thymol blue shows red color at below pH than 1.2 and shows yellow color at the pH between 2.8 and 8.0. For the pH above 9.6, thymol blue shows blue color.

Hence, the thymol blue has 2 pH ranges as 1.2 - 2.8 and 8.0 - 9.6.

Since, pH = 11 is above the pH = 9.6, thymol blue shows blue color.

The answer would be blue. This is because red indicates 1-2, pink is 3, and yellow is 6.

Write your answer in scientific notation and Stanford form. $(1.2 * {10}^(7))(4 * {10}^( - 2))$

Answers

The answer is 4.8 x 10^5 in scientific notation and 480,000 in standard form.

To multiplying numbers in scientific notation, you need to multiply the coefficients and add the exponents.

Using the given numbers, (1.2 x 107) and (4 x 10-2), we multiply the coefficients 1.2 and 4 to get 4.8.

Then, we add the exponents 7 and -2 to get 5.

Writing the result in scientific notation, we have 4.8 x 105.

In standard form, this is expressed as 480,000.

Therefore, the answer in scientific notation is 4.8 x 105 and in standard form is 480,000.

Learn more about multiplying numbers in scientific notation here:

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1.2 x 10000000 = 12000000
4 x .10 = .4
12000000 x .4 = 4,800,000
= 4.8 x 10^6
The little numbers after the 10 tells you how many times you move the numbers decimal. We do this so we can simplify bigger numbers.

Which type of organic molecule is an amino acid? A. building block of carbohydrates B. building block of proteins C. building block of nucleic acids D. building block of lipids

Answers

B. building block of proteins

Amino acids are the monomer (building blocks) of proteins. On repeating, they constitute a protein which is polymer of amino acid.

In short, Your Answer would be Option B

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The equation below shows the incomplete combustion of ethene.C2H4 + O2 → CO2 + H2O

If 2.70 mol C2H4 is reacted with 6.30 mol O2 identify the limiting reagent

Answers

The limiting reagent is O₂.

Firstly, write the balanced chemical equation:

C₂H₄ + O₂ → CO₂ + H₂O

Then, we need to write the mole ratio of the reactants

The theoretical mole ratio is given by the coefficients of the balanced chemical equation: 3 moles of O₂ react with 1 mol of C₂H₄

$\frac{\text{3 mol O_2}}{\text{1 mol C_2H_4}}$ $(3 mol O_2)/(1 mol C_2H_4)$

Now, let's write the mole ratio of the substances available

$(6.3 mol O_2)/(2.70mol C_2H_4)$ ≈ $(2.3 mol O_2)/(1 mol C_2H_4)$

We concluded that,

Since, the ratio of the O₂ to C₂H₄ available is less than the theoretical ratio of O₂ needed to react with C₂H₄, the former is not enough: it will be consumed before the other reagent and it is the limiting reactant.

Hence, the limiting reagent is O₂.

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Answer:

The limiting reagent is O₂.

Explanation:

1. Write the balanced molecular equation:

$C_2H_4+3O_2\longrightarrow 2CO_2+2H_2O$

2. Write the mole ratio of the reactants

The theoretical mole ratio is given by the coefficients of the balanced molecula equation: 3 moles of O₂ react with 1 mol of C₂H₄

$(3molO_2)/(1molC_2H_4)$

3. Write the mole ratio of the substances available

$(6.3molO_2)/(2.70molC_2H_4){\approx (2.3molO_2)/(1molC_2H_4)$

4. Conclusion

Since the ratio of the O₂ to C₂H₄ available is less than the theoretical ratio of O₂ needed to react with C₂H₄, the former is not enough: it will be consumed before the other reagent and it is the limiting reactant.

Hence, the limiting reagent is O₂.

What is considered to be one of the first series of events in the study of chemistry?

Answers

Alchemists studied chemical reactions before chemistry was a word

Final answer:

The early 19th century work of John Dalton, particularly his advancement of atomic theory and the concepts of specific mass ratios in chemical reactions, is considered one of the first major series of events in the study of chemistry. Amedeo Avogadro further developed these ideas by defining Avogadro's number.

Explanation:

The origin of chemistry can be traced back to the practice of alchemy, with attempts to understand the behavior of matter dating back more than 2500 years. However, one of the first series of significant events in the

study of chemistry began in the early 19th century with John Dalton's work in atomic theory, which was based on quantitative measurements and helped establish the concept of atoms and molecules as fundamental units of substances. Dalton was also instrumental in establishing the concept of specific mass ratios in chemical reactions, which led to the development of formula mass - the sum of the average atomic masses of all atoms in a substance's formula. This work was later extended by the Italian physicist

Amedeo Avogadro, who developed the concept of a fixed number of atoms or molecules in a mole, known today as Avogadro's number.