Welcome to YESOTA CHM101 QUIZ 3
Overview:
This is a Test Simulator, we advise you to see yourself as being in the examination hall and avoid cheating.
Date: February 7, 2025
Duration: 15 minutes
No of Questions: 10 Questions
Course: CHM101
Instructions:
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1.
CHM101
When 10g of razor blade completely reacted with an excess solution of HCl, 0.110mol of FeCl2 was obtained. Calculate the mass of iron in the razor blade{Fe=56} Equation of reaction Fe+2HCl→FeCl2+H2
2.
CHM101
Quicklime is produced by the thermal decomposition of limestone. Calculate the volume of CO2 produced at STP from the decomposition of 152g of limestone (limestone = 100.1g/mol, GMV of a gas at STP = 22.42L)
3.
CHM101
What volume of 22.22 moldm-³ of HNO3 is required to prepare 250cm³ of 0.22 moldm-³ HNO3?
4.
CHM101
Which of the following pairs of elements has higher ionization energy?
5.
CHM101
When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are produced. What volume of 5.0 M HCl is required to react completely with 3g of Magnesium?
6.
CHM101
A hypothetical element with an atomic weight of 65.0 amu consists of just two isotopes. One of the isotopes consists of atoms having a mass of 64.23 amu; the other of 65.32 amu. What is the percent natural abundance of the heavier isotope?
7.
CHM101
One type of anaerobic respiration converts glucose (C6H12O6) to ethanol (C2H5OH) and carbon dioxide. If the molecular weight of glucose is 180grams/mol and the molar mass of ethanol is 46 g/mol, how many grams of carbon dioxide are produced when 1 mol of glucose is digested via respiration?
8.
CHM101
4.9g of sodium is treated with propanoic acid and liberated hydrogen gas. How many moles of the gas are liberated? [Na=23]
9.
CHM101
Quicklime (CaO) is produced by the thermal decomposition of CaCO3. Calculate the volume of CO2 produced at STP from the decomposition of 162g of CaC03. [CaCO3=100.1g, M. V.= 22.4dm3 at STP
10.
CHM101
The maximum number of electrons that can be accommodated in a sublevel for which l=3
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