What is the structure of beeswax that contains 16 carbon of carboxylic acid and 30 carbon of alcohol?

Answers

Answer 1

Answer:

Answer:

Tricontanyl palmitate: CH₃-(CH₂)₂₉-O-CO-(CH₂)₁₄-CH₃

Explanation:

Beeswax is a tough natural wax which is produced by the worker honey bees. The beeswax is an ester of the long chain fatty acids and alcohols. One of the major components of beeswax is tricontanyl palmitate.

Tricontanyl palmitate is a wax ester that is composed of 16-carbon fatty acid and a 30-carbon alcohol, joined by an ester linkage.

The molecular structure of tricontanyl palmitate is:

CH₃-(CH₂)₂₉-O-CO-(CH₂)₁₄-CH₃

Answer 2

Answer: This is the answer hope this helps

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Which pair of elements is MOST likely to chemically combine and form ionic bonds?. A). chlorine and chlorine. B). lithium and chlorine. C). carbon and hydrogen. D). sulfur and oxygen

Answers

Answer: B). lithium and chlorine

Explanation: An ionic bond is formed between a metal and a non-metal by transfer of electrons from metal to non metal.

Electronic configuration of lithium:

$[Li]:31s^22s^1$

Lithium atom will loose one electron to gain noble gas configuration and form lithium cation with +1 charge.

$[Li^+]=1s^22s^2$

Chlorine atom has oxidation number of -1.

Electronic configuration of chlorine;

$[Cl]=1s^22s^22p^63s^23p^5$

Chlorine atom will gain one electron to gain noble gas configuration and form chloride ion with -1 charge.

$[Cl^-]=1s^22s^22p^63s^23p^6$

$Li^+$ combine with $Cl^-$ to form lithium chloride $(LiCl)$

The pair of elements that will most likely combine chemically to form ionic bonds are B. Lithium and Chlorine.

If a sample of iron with a density of 7.80 g/cm3 displaces 75.0 mL of water when placed in a beaker, what is its mass?

Answers

1 mL = 1 cm³

75.0 mL = 75.0 cm³

Density = mass / volume

7.80 = mass / 75.0

mass = 7.80 x 75.0

mass = 585 g

hope this helps!

If a sample of iron with a density of 7.80 g/cm^3 displaces 75.0 mL of water when placed in a beaker, its mass is 585 g.

A scientist tests a new cough medicine by giving it to a group who have colds. The scientist gives another group with colds a liquid and tells them it is cough medicine. The people in both group are women between the age of 20 and 30 who normally are in good health

Answers

Here's your asnwer.

Answer:

posible mente es una equivocacion porque dijo que estaban refriados y les dió una medicina para la tos

Write the balanced equation for the reaction of aqueous Pb(ClO3)2 with aqueous NaI.

Answers

The balanced equation for the reaction of aqueous Pb(ClO3)2 with aqueous NaI is as below

Pb(ClO3)2(aq) + 2NaI(aq) → PbI2(s) + 2 NaClO3(aq)

Explanation

from the equation above 1mole of lead(ii) chlorate Pb(ClO3)2 react with 2 moles of sodium iodide to form 1 moles of lead(ii) iodide( PbI2) and 2 moles of sodium chlorate NaClO3.

$Pb(ClO_3)_(2(aq))+2NaI_((aq))=PbI_(2(s))+2NaClO_(3(aq))$

Given the balanced equation:AgNO3(aq) + NaCl(aq) → NaNO3(aq) + AgCl(s)
This reaction is classified as

Answers

Answer:

ahhh....Double displacement reaction or precipitation reaction.(both are correct im not guessing)

What is the molarity of an aqueous solution that contains 12.2 grams of SrCl2 dissolved in 2,500 milliliters of solution?

Answers

Molarity is

mol
-----
Litre

First you need to find how many moles 12.2 grams is

To do this you need to find molecular weight of SrCl2
(87.62)+(35.45*2) = 158.52 g/mol

Now convert 12.2 g into moles
12.2 g * 1 mol / 158.52 g (12.2/158.52) = 0.0769618976 moles

Next convert 2500 mL into Litres
2500mL * 1L / 1000mL (2500/1000) = 2.5 Litres

Finally do moles / Litres

0.0769618976 / 2.5 = 0.0308 M

0.031 M is the molarity of an aqueous solution that contains 12.2 grams of SrCl2 dissolved in 2,500 milliliters of solution.

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