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3 years ago

How many hydrogen atoms are present in a hydrocarbon chain of five carbons joined to each other by single covalent bonds?

Chemistry

1 answer:

zhenek [66]3 years ago

5 0

Answer:

12 hydrogen atoms are present.

Explanation:

The hydrocarbon is an alkane as it contains single covalent bonds.

The first carbon attaches to 3 hydrogen atoms, the second to fourth carbon attaches to 2 hydrogen atoms each and the last (fifth) carbon have 3 hydrogen atoms.

The Alkane compound is called PENTANE with molecular formula C5H12.

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Answer the following questions that relate to electrochemical reactions. (a) Under standard conditions at 25˚C, Zn(s) reacts wit

Elanso [62]

Answer:

0.48 V

Explanation:

Zn(s) ------------> Zn^2+(aq) + 2e. Oxidation half equation (-0.76V)

Co^2+(aq) + 2e-----------> Co(s). Reduction half equation (-0.28)

Zn(s) + Co^2+(aq) -------------> Zn^2+(aq) + Co(s) overall redox equation

Zinc is the anode while cobalt is the cathode.

E°cell= E°cathode - E°anode

E°cell= -0.28-(-0.76)= 0.48 V

7 0

3 years ago

Read 2 more answers

If 5g of H2 are reacted with excess CO, how many grams of CH3OH are produced, based on a yield of 86%?

Cerrena [4.2K]

Answer: 34.4 g

Explanation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

$\text{Number of moles of hydrogen}=\frac{5g}{2g/mol}=2.5moles$

As $CO$ is in excess, $H_2$ is the limiting reagent and thus it will limit the formation of products.

$CO+2H_2\rightarrow CH_3OH$

According to stoichiometry:

2 moles of hydrogen produce = 1 mole of $CH_3OH$

2.5 moles of hydrogen produce = $\frac{1}{2}\times 2.5=1.25 moles$ of $CH_3OH$

Mass of $CH_3OH=moles\times {\text {Molar mass}}=1.25\times 32=40g$

But as % yield is 86%, mass of $CH_3OH$ produded is $\frac{86}{100}\times 40=34.4g$

Thus 34.4 g of $CH_3OH$ is produced.

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3 years ago

What is Spontaneous ion

Ilia_Sergeevich [38]

I think I found it. It was a cylinder

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3 years ago

2 What is the gram-formula mass of Ca(OH)2?

Verizon [17]

Answer:

The correct Answer is Number 3 the 74 g per mole ...

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3 years ago

Which is most likely to occur to native plants when the chemical composition of the soil they live in changes?

PSYCHO15rus [73]

Answer:

Explanation:

Both A and D are correct, because they will adapt from natural selection. Over time they will overcome the challenges of the new soil and be fine. however a few will die, but the best answer is D.

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3 years ago