10) which of the following compounds is a saturated hydrocarbon? A) CH3CH2OH B) CH CH C) ethyne CO CH3CHO 1) which compound is an unsaturated hydrocarbon? CA hexane B) hexanoic acid henne D) ethane. D) CH CH

Answers

Answer 1

Answer:

The compound that is a saturated hydrocarbon is CH3CH2OH. The answer is letter A. A saturated hydrocarbon has only one single bond between the carbon atoms. The compound that is an unsaturated hydrocarbon is CHCH. The answer is letter D.

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Determine the number of atoms in 4.56x10-2g Na

What’s is CO written?

Answers

Answer:

CO is a chemical formula that contains one carbon atom (C) and one atom of oxygen (O). Altogether, CO translates to "carbon monoxide."

Explanation: Why monoxide and not dioxide? Well, the prefix mono means "one," and di means "two." Since there is only one oxygen atom (-oxide), then it must be monoxide! Voila!!

Which of these subatomic particles adds the most mass to an atom?a. proton
b. photon
c. electron
d. It depends on what the element is.
An atom with two protons, three neutrons and two electrons would have a mass of about how many atomic mass units?
a. 2
b. 3
c. 5
d. 7

Answers

The answer for the first question is A. Proton is the subatomic particles which adds most of the mass of an atom as well as the neutron since they have the same mass. Photon, on the other hand, is not one of the subatomic particles.

To show the electron configuration for an atom, what is the advantage of using an orbital notation compared to a dot structure?

Answers

The advantage of using an orbital notation is that it shows the electron distribution in shells.

Dot structures only show the valence electrons of an atom which are the electrons found at the outermost shell. The orbital notation gives a more detailed depiction of the electrons in each shell. This is most advantageous for atoms that have special cases.

Some examples of atoms that have special electronic configurations are copper and chromium. For example, copper is more stable when the 3d subshell is completely filled. This leaves the 4s subshell with only 1 electron. Chromium is also more stable when its s and d subshells are only half full. The orbital notation depicts these special cases, whereas the dot structure does not.

Answer:

2. Orbital notation shows the spin of the electrons.

Explanation:

Butyric acid is responsible for the odor in rancid butter. A solution of 0.25 m butyric acid has a ph of 2.71. What is the ka for the acid?

Answers

Answer:

Ka = 1.5 -10^-5

Explanation:

Step 1: Data given

Molarity of the solution = 0.25 M

pH = 2.71

Step 2 The equation

C3H7COOH + NaOH ⇆ C3H7COONa + H2O

Step 3: Calculate pKa

pH = (pKa-log[acid])/2

2pH = pKa -log[acid]

pKa = 2pH +log[acid]

⇒with pH = 2.71

⇒with log[acid] = -0.60

pKa=2*2.71 -0.60

pKa = 5.42 - 0.60

pKa = 4.82

Step 4: Calculate Ka

pKa = -log(Ka)

Ka = 10^-4.82

Ka = 1.5 -10^-5

What is the percent by mass of carbon in C10 H14 N2?

Answers

Answer: The percentage by mass of carbon in the given compound is 45.8 %

Explanation:

We are given a chemical compound having chemical formula $C_(10)H_(14)N_2$

To calculate the percentage composition of an element in a compound, we use the equation:

$\%\text{ composition}=\frac{\text{Mass of carbon element}}{\text{Mass of compound}}* 100$

In 1 mole of given compound, 10 moles of carbon atoms are there.

Mass of $C_(10)H_(14)N_2= [(10* 12)+(14 * 1)+(2* 14)]=262g/mol$

Mass of carbon element = $[10* 12]=120g/mol$

Putting values in above equation, we get:

$\%\text{ composition of carbon}=(120)/(262)* 100=45.8\%$

Hence, percentage of carbon in given compound is 45.8 %.

Multiply the number of each element by its mass on the periodic table.

Add them together.

Put the mass of carbon only over the total mass and multiply the result by 100 to get the percentage.

What are two examples of an endothermic reaction and what are two examples of an ectothermic reaction?

Answers

Exothermic processes: Making ice cubes,formation of snow in clouds

Endothermic processe: Melting ice cubes, evaporation of water

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