Question 251
What type of bond is formed by the sharing of electron pairs between atoms?Chemical bondingChemical bondingeasy
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Question 252
If 1 mole of a substance contains Avogadro's number of particles, how many particles are in 2 moles?Mole conceptMole concepteasy
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Question 253
Which factor will increase the rate of a chemical reaction?Rates and equilibriumRates and equilibriummedium
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Question 254
In the equilibrium reaction N₂ + 3H₂ ⇌ 2NH₃, what will happen if pressure is increased?Rates and equilibriumRates and equilibriumhard
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Question 255
Which isotope of carbon is commonly used in radiocarbon dating?Atomic structureAtomic structurehard
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Question 256
Which of the following is an example of a salt formed from a strong acid and a strong base?Acids, bases, saltsAcids, bases and saltsmedium
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Question 257
What is the atomic number of an element that has 19 protons?Atomic structureAtomic Structureeasy
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Question 258
What volume (in dm³) will 2 moles of an ideal gas occupy at standard temperature and pressure (STP)?Mole conceptMole Concepteasy
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Question 259
Which of the following substances is a strong acid?Acids, bases, saltsAcids, Bases and Saltsmedium
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Question 260
In electrochemistry, what is the function of the salt bridge in a galvanic cell?ElectrochemistryElectrochemistrymedium
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