Start learning →

IMU CET Composition of Substances and Solutions — practice questions

Explore 91 free Composition of Substances and Solutions questions in IMU CET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

Practise Composition of Substances and Solutions with Quill →

Composition of Substances and Solutions questions and exercises with answers

Showing questions 1–30 of 91.

Complete the molarity ruleRead the answer and worked solution →Order the empirical formula stepsRead the answer and worked solution →Match each compound to its formula massRead the answer and worked solution →Empirical or molecular formula?Read the answer and worked solution →Fill in the dilution equationRead the answer and worked solution →Spot the one that does not fitRead the answer and worked solution →Match each element to its molar massRead the answer and worked solution →Find the wrong wordRead the answer and worked solution →For a covalent compound, what other name may the formula mass correctly be given?Read the answer and worked solution →Chloroform is CHCl3. Using C = 12.01 amu, H = 1.008 amu and Cl = 35.45 amu, what is its molecular mass?Read the answer and worked solution →In one molecule of CHCl3, what total mass do the chlorine atoms contribute if Cl = 35.45 amu?Read the answer and worked solution →Aspirin has the molecular formula C9H8O4. With C = 12.01, H = 1.008 and O = 16.00 amu, what is its molecular mass?Read the answer and worked solution →Ibuprofen is C13H18O2. Using C = 12.01, H = 1.008 and O = 16.00 amu, what is its molecular mass?Read the answer and worked solution →Acetaminophen is C8H9NO2. Using C = 12.01, H = 1.008, N = 14.007 and O = 16.00 amu, what is its molecular mass?Read the answer and worked solution →Sodium chloride is NaCl. With Na = 22.99 amu and Cl = 35.45 amu, what is its formula mass?Read the answer and worked solution →Aluminium sulfate is Al2(SO4)3. Using Al = 26.98, S = 32.06 and O = 16.00 amu, what is its formula mass?Read the answer and worked solution →How many oxygen atoms does one formula unit of Al2(SO4)3 contain?Read the answer and worked solution →How is one mole of a substance defined?Read the answer and worked solution →What is the conveniently rounded value of Avogadro's number?Read the answer and worked solution →Avogadro's number is named in honour of a scientist from which country?Read the answer and worked solution →What does the molar mass of a substance measure, and in what unit?Read the answer and worked solution →A compound has a formula mass of 58.44 amu. What is its molar mass?Read the answer and worked solution →The estimated average daily requirement of potassium is 4.7 g. Given that potassium has a molar mass of 39.10 g/mol, what is this in moles?Read the answer and worked solution →A beryllium X-ray window weighing 3.24 g contains 0.360 mol of beryllium. What is the molar mass of beryllium?Read the answer and worked solution →A litre of air contains 9.2 x 10^-4 mol of argon. Taking the molar mass of argon as 39.95 g/mol, what mass of argon is this?Read the answer and worked solution →A sample of 2.561 mol of gold has a mass of 504.4 g. What is the molar mass of gold to three significant figures?Read the answer and worked solution →How many copper atoms are in 5.00 g of copper wire, given Cu = 63.55 g/mol and 6.022 x 10^23 atoms per mole?Read the answer and worked solution →Glycine is C2H5O2N. Using C = 12.01, H = 1.008, O = 16.00 and N = 14.007 g/mol, what is its molar mass?Read the answer and worked solution →How many moles of glycine are in 28.35 g of glycine, whose molar mass is 75.07 g/mol?Read the answer and worked solution →How many moles of sucrose, C12H22O11, are in a 25 g sample? Use C = 12.01, H = 1.008 and O = 16.00 g/mol.Read the answer and worked solution →

Worked practice questions

Complete the molarity rule

Read exercise and reference answers
Missing parts
  1. Answer
    moles
    Choices
    1. grams
    2. moles
    3. litres
  2. Answer
    litre
    Choices
    1. mole
    2. gram
    3. litre
  3. Answer
    0.250 M
    Choices
    1. 0.250 M
    2. 1.00 M
    3. 2.00 M
Complete the statement
Molarity counts the {0} of solute in one {1} of solution, so 0.500 mol dissolved to make 2.00 L is {2}.
Instructions
Tap the right entry for each blank to finish the sentence.
_Source: OpenStax Chemistry, section 3.3 Molarity_

Open this exercise →

Order the empirical formula steps

Read exercise and reference answers
Steps
  1. Assume 100 g total
  2. Mass to moles
  3. Divide by smallest
  4. Scale to integers
Instructions
Tap the four steps in the order you would carry them out on percent data.
_Source: OpenStax Chemistry, section 3.2 Determining Empirical and Molecular Formulas_

Open this exercise →

Match each compound to its formula mass

Read exercise and reference answers
Matching pairs
  1. Left
    NaCl
    Right
    58.44 amu
  2. Left
    Chloroform CHCl3
    Right
    119.37 amu
  3. Left
    Aspirin C9H8O4
    Right
    180.15 amu
  4. Left
    Ibuprofen
    Right
    206.27 amu
  5. Left
    Ca3(PO4)2
    Right
    310.18 amu
  6. Left
    Al2(SO4)3
    Right
    342.14 amu
Instructions
Tap a compound, then tap the formula mass that belongs to it.
_Source: OpenStax Chemistry, section 3.1 Formula Mass and the Mole Concept_

Open this exercise →

How to practise

  1. Choose a Composition of Substances and Solutions question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Chemistry topics

GasesKinetics