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Alchen [17]
3 years ago
12

How many atoms are in 18.016g of Sulfur?

Chemistry
1 answer:
grandymaker [24]3 years ago
5 0
<h3>Answer:</h3>

= 3.384 × 10^23 atoms

<h3>Explanation:</h3>

We are given 18.016 g of sulfur

We are required to determine the number of atoms of sulfur

We will use the following steps;

<h3>Step 1: Determine the number of moles of sulfur </h3>

Number of moles = Mass ÷ molar mass

Molar mass of sulfur = 32.065 g/mol

Therefore;

Number of moles = 18.016 g÷ 32.065 g/mol

                            = 0.562 moles

<h3>Step 2: Determine the number of atoms </h3>

Using the Avogadro's constant;

1 mole of an element = 6.022 × 10^23 atoms

Therefore;

For 0.562 moles;

= 0.562 moles × 6.022 × 10^23 atoms

= 3.384 × 10^23 atoms

Therefore; there are 3.384 × 10^23 atoms in 18.016 g of Sulfur.

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5 0
4 years ago
An aqueous solution is prepared by dissolving 15.6 g of Cu(NO3)2 ⋅ 6 H2O in water and diluting to 345 mL of solution. What is th
Vladimir [108]

<u>Answer:</u> The molarity of NO_3^- ions in the solution is 0.306 M

<u>Explanation:</u>

To calculate the molarity of solution, we use the equation:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

We are given:

Mass of solute (Cu(NO_3)_2.6H_2O) = 15.6 g

Molar mass of (Cu(NO_3)_2.6H_2O) = 295.6 g/mol

Volume of solution = 345 mL

Putting values in above equation, we get:

\text{Molarity of }Cu(NO_3)_2.6H_2O=\frac{15.6g\times 1000}{295.6g/mol\times 345mL}\\\\\text{Molarity of }Cu(NO_3)_.6H_2O=0.153M

As, 1 mole of (Cu(NO_3)_2.6H_2O) produces 1 mole of copper (II) ions and 2 moles of nitrate ions.

So, molarity of NO_3^- ions = (2 × 0.153) = 0.306 M

Hence, the molarity of NO_3^- ions in the solution is 0.306 M

3 0
3 years ago
What happen when Nacl solution reacts with AgNo3 solution​
Anna71 [15]

Answer:

hii

Explanation:

NaCl + AgNO3 = AgCl + NaNO3

7 0
3 years ago
The compound 1-Butene is modeled here.
Grace [21]

Answer:

             Option-A. Covalent bonds would need to form between the molecules.

Explanation:

                   In given statement the molecules of 1-Butene are adding to each other forming a macromolecule called as Polybutene. Such type of reactions are called Polymerization reactions.

                   Polymerization reactions are those reactions in which small molecules called as monomers join together to form a large molecule also known as polymers. These reactions are done via different mechanisms like addition reaction, condensation reactions e.t.c.

Example:

              Polybutene (polymer) is made up of 1-butene (monomers) through addition reaction in which the double bonds of 1-butene molecules are involved in the formation of new single covalent bond via acid catalyzed, base catalyzed or free radical mechanisms.

                           n H₂C=CH-CH₂-CH₃    →    --[H₂C-CH(C₂H₅)]-n--

In above equation "n" represent large number, H₂C=CH-CH₂-CH₃ represent 1-Butene (monomer) and --[H₂C-CH(C₂H₅)]-n-- represent polybutene (polymer).

6 0
3 years ago
Which of the following aqueous solutions should demonstrate the most non-ideal behavior? A. 0.1 M NaI B. 0.2 M CuSO4 C. 0.5 M KB
Maslowich

Answer:

D. 2.0 M CuCl2

Explanation:

The ionic strength of a solution shows the concentration of its ions in that given solution of the compound. Dissolved ionic compounds always dissociate into ions. The total amount of ions in solution will definitely affect the properties of the solution. The concept of ionic strength was first introduced by Lewis and Randall in 1921 while describing the activity coefficients of strong electrolytes.

The ionic strength of CuCl2 is 6M as shown:

ionic strength = 0.5*[(+2)^2*2M + (1-)^2*4M] = 6 M

The higher the ionic strength of a solution, the greater its non ideal behavior.

CuCl2 shows the greatest ionic strength hence the greatest non ideal behavior.

6 0
3 years ago
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