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Gnom [1K]
3 years ago
5

Diagram shows a structure of compound. To which classes of compound does this molecule belong?

Chemistry
1 answer:
zhuklara [117]3 years ago
8 0

Answer:

B

Explanation:

an alkene because of the presence of the double bond

alcohol because of the presence of the OH group

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A hot-air balloon is filled with air to a volume of 3000 m3 at 750 torr and 21°C. The air in the balloon is then heated to 60.°C
valina [46]

Answer: 1.47

Explanation:

The combined gas equation when pressure is constant:

\frac{V_1}{n_1T_1}=\frac{V_2}{n_2T_2}

where,

n_1 =original number of moles of air in the balloon = ?

n_2 =  number of moles of air in the heated balloon = ?

V_1 = initial volume of gas = 3000m^3

V_2 = final volume of gas = 5000m^3

T_1 = initial temperature of gas = 21^oC=273+21=294K

T_2 = final temperature of gas = 60^oC=273+60=333K

Now put all the given values in the above equation, we get the final pressure of gas.

\frac{3000}{n_1\times 294K}=\frac{5000}{n_2\times 333K}

\frac{n_2}{n_1}=1.47

Therefore, the  ratio of the number of moles of air in the heated balloon to the original number of moles of air in the balloon is 1.47

5 0
3 years ago
What is the percent by mass (mv) of a solution with 1.56 g of benzene dissolved in gasoline to make 998.44 mL of solution? (dens
Marina CMI [18]

Answer:

The percentage by mass of benzene in the solution is approximately 0.2%

Explanation:

The given parameters are;

The mass of the benzene solute dissolved in the gasoline solvent, m₁ = 1.56 g

The total volume of the benzene gasoline solution made, V = 998.44 mL

The density of gasoline, ρ = 0.7489 g/mL

Mass, m = Density, ρ × Volume, V

∴ The mass of gasoline in the 998.44 mL, solution = 0.7489 g/mL × 998.44 mL = 747.731716 g

The total mass of the solution = The mass of the benzene in the solution + The mass of the gasoline in the solution

∴ The total mass of the solution = 747.731716 g + 1.5 g = 749.231716 g

The \ percentage \  by \  mass = \dfrac{The  \  mass \   of \   a  \  fraction}{(The  \  mass  \  of  \  the  \  total  \  solution)} \times  100

The percentage by mass of benzene in the solution = (1.5 g/749.231716 g)×100 ≈ 0.2% by mass.

6 0
3 years ago
The difference between ATP and the nucleoside triphosphates used during DNA synthesis is that:
12345 [234]

Answer:

The correct answer is <em>d. The nucleoside triphosphates have the sugar deoxyribose; ATP has the sugar ribose.</em>

Explanation:

The nucleoside triphosphates are components of DNA (deoxyribonucleic acid) so they are composed by a nitrogenous base (adenine, guanine, thymine or cytosine) and a deoxyribose sugar. In contraposition, ATP (adenosine triphosphate) is composed by the nitrogenous base adenine and a ribose sugar along with three phosphates groups. Unlike ribose, deoxyribose is a 5-carbon sugar which lack of an oxygen atom in C2 position.

4 0
3 years ago
Water has a density of 1.0g/ml * Physical Property Physical Change Chemical Property Chemical Change
Daniel [21]

The density of water is a physical property.

You can measure it without changing the water to a different substance.

It is <em>not a physical change</em> because the water does not change to ice or steam.

You can observe a <em>chemical property</em> or a <em>chemical change</em> only if the water <em>changes to a different substance</em>.


5 0
3 years ago
Which of the following represents a compound made of five molecules co5 c2o5 c50 5co2
jasenka [17]

Answer:

The answer is: 5co2

8 0
3 years ago
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