All categories

3 years ago

How to calculate moles

Chemistry

1 answer:

Alex Ar [27]3 years ago

3 0

Answer:

Moles = Mass / Mr

Moles = Concentration x Volume

Explanation:

Moles can be worked out in several ways depending on the information you are given. Some of the equations containing moles are:

Moles = Mass / Mr

Moles = Concentration x Volume

You might be interested in

What are the abbreviations for a milliliter

sleet_krkn [62]

ML. is the abbreviation of Milliliter

4 0

3 years ago

Read 2 more answers

How many neutrons does iron oxide?

lawyer [7]

Answer:30

Explanation:

3 0

3 years ago

How many moles are present in 54.8 mL of mercury if the density of mercury is 13.6 g/mL?

lesya692 [45]

Answer:

3.72 mol Hg

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis
Density = Mass over Volume

Explanation:

Step 1: Define

D = 13.6 g/mL

54.8 mL Hg

Step 2: Identify Conversions

Molar Mass of Hg - 200.59 g/mol

Step 3: Find

13.6 g/mL = x g / 54.8 mL

x = 745.28 g Hg

Step 4: Convert

$745.28 \ g \ Hg(\frac{1 \ mol \ Hg}{200.59 \ g \ Hg} )$ = 3.71544 mol Hg

Step 5: Check

We are given 3 sig figs. Follow sig fig rules and round.

3.71544 mol Hg ≈ 3.72 mol Hg

8 0

3 years ago

If 16.8 mL of the analyte H2C2O4 (oxalic acid) is titrated with 0.501 M KOH to 13.54 mL, determine the mass of the analyte.

Neko [114]

Answer:

Mass of Analyte H2C2O4 = 18.18 grams

Explanation:

The balanced equation is:

$H_{2}C_{2}O_{4}+2KOH\rightarrow K_{2}C_{2})_{4}+H_{2}O$

The Molarity of Oxalic acid needed can be determined using: $M_{1}V_{1}=M_{2}V_{2}$

Here M1 = Molarity of Oxalic acid

V1 = Volume of oxalic acid

M2 = Molarity of KOH and V2 = Volume of KOH

M1 = ? , V1 = 16.8 mL , M2 = 0.501 M , V2 = 13.54 mL

Put the values and solve for M2,

$M_{1}V_{1}=M_{2}V_{2}$

$2\times M_{1}(16.8)=0.501\times 13.54$

We are multiplying by 2 because , 1 H2C2O4 needs 2 KOH

$M_{1}=\frac{0.501\times 13.54}{2\times 16.8}$

$M_{1}=0.202M$

Hence Molarity of H2C2O4 =

0.202 M

Molar mass = H2C2O4 = 2x1 +2x12 + 4x16

= 2+24+64 = 90 gram

$Mole =molarity\times Molar\ mass$

$Moles=0.202\times 90$

18.18 gram

8 0

3 years ago

Which sequence represents the relationship between temperature and volume as explained by the kinetic-molecular theory? higher t

RSB [31]

Answer:

Explanation:

2020edge

7 0

4 years ago

Read 2 more answers

How to calculate moles​

How to calculate moles