Chemistry, 18.09.2019 21:40 carlosiscr7

Capsaicin, the compound that gives the hot taste to chili peppers, has the formula c18h27no3. its molar mass is 305.42 g/mol. calculate the mass percent of each element in the compound.

Answers: 1

Show answers

Answers

Answer from: anggar20

Explanation: $C_{18}H_{27}NO_{3}$ is an organic compound with a nitro group present in it.

Given that the molar mass of the compound is 305.42 g/mol.

Mass percent of element is calculated by the mass of element divided by the total mass of the substance multiplied by 100.

Mass percent of carbon = (12 x 18) / 305.42 x 100 = 216/ 305.42 x 100 = 70.72%

Mass Percent of Hydrogen = (1 x 27) / 305.42 x 100 = 27/ 305.42 x 100 = 8.84%

Mass Percent of Nitrogen = (1 x 14)/ 305.42 x 100 = 14/ 305.42 x 100 = 4.58%

Mass Percent of Oxygen = (3 x 16)/ 305.42 x 100 = 48/ 305.42 x 100 = 15.71%

Answer from: Quest

assuming that your periodic table has eighteen columns, you should highlight the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the $3d$ have energy higher than those in the $4 s$ orbital while lower than those of the $4 p$ orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the $4s$ orbital is therefore filled right after $3p$ orbitals and before $3 d$ orbitals.

potassium has electron configuration $[\text{ar}] 4 s^{1}$ and calcium $[\text{ar}] 4 s^{2}$ . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration $[\text{ar}] 4 s^{2} \; 3d^{1}$ and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the $ns^{2} \; (n-1) p^{1}$ and should be highlighted as well.

Answer from: Quest

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 09:00, tashaunalewis4786

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Answers: 1

continue

Chemistry, 22.06.2019 11:00, snowprincess99447

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

Answers: 1

continue

Chemistry, 22.06.2019 16:30, montanolumpuy

How many moles of sulfuric acid (h2so4) are needed to react completely with 6.8 moles of lithium hydroxide (lioh)? 2lioh + h2so4 → li2so4 + 2h2o a. 3.4 mol h2so4b. 6.8 mol h2so4 c. 10.2 mol h2so4 d. 13.6 mol h2so4

Answers: 3

continue

Chemistry, 22.06.2019 17:30, nijanicole164

A650 ml sodium bromine solution has a bromide ion concentration of 0.245 m. what is the mass (g) of sodium bromide in solution? a) 103.b)0.00155.c)16400.d) 16.4.e) 0.159

Answers: 2

continue

You know the right answer?

Capsaicin, the compound that gives the hot taste to chili peppers, has the formula c18h27no3. its mo...