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irina1246 [14]
4 years ago
6

Write the Lewis structure and molecular formula for each of the following hydrocarbons:

Chemistry
1 answer:
dusya [7]4 years ago
4 0

Answer:

molecular formula:

a) Hexane: C6H14

b) 3-methylpentane: C6H14

c) cis-3-hexene: C6H12

d)4-methyl-1-pentene: C6H12

e) 3-hexyne: C6H10

f) 4-methyl-2-pentyne: C6H10

Explanation:

structure:

a) hexane : CH3-CH2-CH2-CH2-CH2-CH3

b) 3-metilpentane: CH3-CH2-CH-CH3-CH3

                                                 CH3

c) cis-3-hexene:   CH3-CH2-CH=CH-CH2-CH3

d)4-methyl-1-pentene: CH2=CH-CH2-CH-CH3

                                                              CH3

e) 3-hexyne: CH3-CH2-C≡C-CH2-CH3

f)4-methyl-2-pentyne: CH3-C≡C-CH-CH3

                                                      CH3

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SrCl2 (aq) + K2CO3 (aq) —>
Wewaii [24]

Answer: SrCl_2(aq)+K_2CO_3(aq)\rightarrow 2KCl(aq)+SrCO_3(s)

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

A double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.

The balanced chemical equation is:

SrCl_2(aq)+K_2CO_3(aq)\rightarrow 2KCl(aq)+SrCO_3(s)

8 0
3 years ago
Changes of motion are caused by
zzz [600]

Answer:

things that happen around you and chemical figures in the brain

5 0
3 years ago
Perform the following conversions:
spayn [35]

0 K in Celsius scale is -273 degree Celsius and in Fahrenheit scale 459 degree F.

The degree of a body's heat or cold is referred to as the gas's temperature. It is stated in temperature units such as, degree Celsius, Fahrenheit  and Kelvin these temperature units are interchangeable. To convert Celsius to Fahrenheit ° F = 9/5 ( ° C) + 32, kelvin to Fahrenheit= ° F = 9/5 (K - 273) + 32, Celsius to kelvin K = ° C + 273.  to convert Fahrenheit to Celsius ° C = 5/9 (° F - 32)  In this question,  to convert Fahrenheit to Celsius ° C = 5/9 (° F - 32) = 0-273 K (5/9 - F-32) =459 degree F. and kelvin to Celsius K - 273 = C = -273 degree Celsius

At 8^0C K= 8 + 273 =281 degree Celsius and at 8F , 8= 9/5(k-273) +32 =453 F

To learn more about Fahrenheit and Celsius:

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5 0
2 years ago
Enough of a monoprotic acid is dissolved in water to produce a 1.35 M solution. The pH of the resulting solution is 2.93. Calcul
Ede4ka [16]
The acid dissociation constant is defined as Ka = [H+][A-]/[HA] where [H+], [A-] and [HA] are the concentrations of protons, conjugate base, and acid in solution respectively. Assuming this is a weak acid as the pH is quite high for a 1.35 M solution, we can assume that the change in [HA] is negligible and therefore [HA] = 1.35 M.
To calculate [H+] we can use the relationship pH = -log[H+], rearranging to give: [H+] = 10^(-pH) = 10^(-2.93) = 1.17 x 10^(-3).
Since the acid is relatively concentrated we can assume therefore that       [H+] = [A-] as for each proton dissociated, a conjugate base is formed.
Therefore, we can calculate Ka as:
Ka = [H+]^2/[HA] = (1.17 x 10^-3 M)^2/1.35 = 1.01 x 10^-6 M
6 0
3 years ago
What is the approximate percent by mass of oxygen in C2H4O2
kherson [118]

Answer:

Approximately 53.3  %.

Explanation:

Molar mass of C2H4O2

= 2 * 12.011 + 4 * 1.008 + 2 * 15.999

=  60.052

% oxygen = (31.998* 100) / 60.052 = 53.28 %

6 0
3 years ago
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