Study resources on Kenyaplex

Get ready-made curriculum aligned revision materials

Exam papers, notes, holiday assignments and topical questions – all aligned to the Kenyan curriculum.

Or go directly to:

Class notes Holiday assignments Topical questions Other resources

How many sulfur atoms are in 1.56 g sulfur?

Answers

We can calculate the number of moles of sulfur from the atomic weight and the given mass. Once we have this, the number of atoms is obtained from Avogadro's Number, NA.
moles S = 1.56 g x 1 mole/32.06 g = 0.0487 mole
atoms S = 0.0487 moles S x 6.022 x 10²³ atoms/mole = 2.93 x 10²² atoms

sharon kalunda answered the question on April 8, 2019 at 13:06

Answer Attachments

Next: How many moles of Fe are in 5.6 g Fe? How many Fe atoms are contained in the sample?

Previous: How many O₂ molecules are present in 0.470 g of oxygen gas?

View more Organic Chemistry Questions and Answers | Return to Questions Index

Exams With Marking Schemes

Related Questions

Give the complete mechanism for each of the following reaction. Use curly arrows to show movement of electrons. (Solved)

Give the complete mechanism for each of the following reaction. Use curly arrows
to show movement of electrons.

Date posted: March 18, 2019 . Answers (1)
Starting with the compound on the left, outline the synthesis of the compound on the right. Show the structures of all reagents/intermediates in each synthesis (Solved)

Starting with the compound on the left, outline the synthesis of the compound on the
right. Show the structures of all reagents/intermediates in each synthesis

Date posted: March 18, 2019 . Answers (1)
Given the reagents 1-bromoethane, magnesium, diethylether and ethyl acetate, show the steps in the synthesis of 3-methyl-3-pentanol (Solved)

Given the reagents 1-bromoethane, magnesium, diethylether and ethyl acetate, show
the steps in the synthesis of 3-methyl-3-pentanol

Date posted: March 18, 2019 . Answers (1)
Explain the contrast of water miscibility of alcohols with increase in the carbon chain (Solved)

Explain the contrast of water miscibility of alcohols with increase in the carbon chain.

Date posted: March 18, 2019 . Answers (1)
Why do alcohols have much higher boiling points than hydrocarbons of comparable molecular weight? (Solved)

Why do alcohols have much higher boiling points than hydrocarbons of comparable molecular weight?

Date posted: March 18, 2019 . Answers (1)
In an experiment, 54.20 grams of phosphorus tribromide (PBr3) was reacted with an excess of 2-methylpropanol (CH₃CH(CH₃)CH₂OH). (Solved)

In an experiment, 54.20 grams of phosphorus tribromide (PBr3) was reacted
with an excess of 2-methylpropanol (CH₃CH(CH₃)CH₂OH). The reaction yielded 57.96 grams of 1-Bromo-2-methylpropane (CH₃CH(CH₃)CH₂Br) and phosphoric acid (H₃PO₃), Write a blanced equation and calculate the percentage yield for the alkyl bromide. [H = 1, C = 12, P = 31, Br = 80]

Date posted: March 15, 2019 . Answers (1)