All categories

3 years ago

How many atoms does 32 grams of sulfur contain?

Chemistry

1 answer:

Lelechka [254]3 years ago

4 0

32 grams of sulfur will contain 6.022 X 1023 sulfur atoms.

You might be interested in

How many grams of NaOH are needed to make 500 mL of a 2.5 M NaOH solution

Veronika [31]

The number of grams of NaOH that are needed to make 500 ml of 2.5 M NaOH solution

calculate the number of moles =molarity x volume/1000

= 2.5 x 500/1000 = 1.25 moles

mass = moles x molar mass of NaOH

= 1.25 x40= 50 grams of NaOH

4 0

4 years ago

Classify the following reaction *

hichkok12 [17]

Answer:

double replacement

Explanation:

The reaction equation is given as:

Pb(NO₃)₂ + 2KI → PbI₂ + KNO₃

This reaction is a double displacement reaction.

In this form of reaction, there is an actual exchange of partners to form new compounds.

AB + CD → AD + CD

One of the following condition serves as driving force for the reaction:

formation of an insoluble compound
formation of water or any other non-ionizing compound
liberation of a gaseous product.

5 0

3 years ago

What is the rate constant of a first-order reaction that takes 143 seconds for the reactant concentration to drop to half of its

algol [13]

Answer:

k = 4.85 x 10⁻³ / s

Explanation:

For a first order reaction we have two very important equations we need to memorize:

ln ( N/N₀ ) = -kt

and,

0.693/ k = t₁/₂

where k is the rate constant and t i is the halflife which can be derived from the first equation.

0.693/ k = t₁/₂ ⇒ k = 0.693 / t₁/₂

k = 0.693 / 143 s = 4.85 x 10⁻³ / s

3 0

3 years ago

What is the molar mass of (NH4)2CO3

omeli [17]

Answer:

96.11 g/mol

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table

Explanation:

Step 1: Define

(NH₄)₂CO₃

Step 2: Identify

Molar Mass of N - 14.01 g/mol

Molar Mass of H - 1.01 g/mol

Molar Mass of C - 12.01 g/mol

Molar Mass of O - 16.00 g/mol

Step 3: Find

Molar mass of (NH₄)₂CO₃ - 2(14.01) + 8(1.01) + 12.01 + 3(16.00) = 96.11 g/mol

8 0

3 years ago

Carvone (C10H14O) is the main component of spearmint oil. It has a pleasant aroma and mint flavor. Carvone is often added to che

marta [7]

Answer: The mass of carbon in given amount of carvone is 47.52 grams

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

Given mass of carvone = 55.4 g

Molar mass of carvone = 150.22 g/mol

Putting values in equation 1, we get:

$\text{Moles of carvone}=\frac{55.4g}{150.22g/mol}=0.369mol$

The chemical formula of carvone is $C_{10}H_{14}O$

This contains 10 moles of carbon atom, 14 moles of hydrogen atom and 1 mole of oxygen atom

Now, calculating the mass of carbon in carvone from equation 1, we get:

Molar mass of carbon = 12 g/mol

Moles of carbon = (10 × 0.396) = 3.96 moles

Putting values in equation 1, we get:

$3.96mol=\frac{\text{Mass of carbon}}{12g/mol}\\\\\text{Mass of carbon}=(3.96mol\times 12g/mol)=47.52g$

Hence, the mass of carbon in given amount of carvone is 47.52 grams

6 0

3 years ago