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Which of the following element does not have one valance ele…

Posted on: August 27, 2025 Last updated on: August 27, 2025 Written by: Anonymous
Which of the following element does not have one valance electron?
Continue reading “Which of the following element does not have one valance ele…”…

The equation N2 + 3H2 —– 2NH3 can be interpreted as follo…

Posted on: August 27, 2025 Last updated on: August 27, 2025 Written by: Anonymous
The equation N2 + 3H2 —– 2NH3 can be interpreted as follows: 1 mol of N2 reacts with 3 mol of H2 to form 2 mol of NH3. Is this statement true or false?
Continue reading “The equation N2 + 3H2 —– 2NH3 can be interpreted as follo…”…

The empirical formula of a compound is CH2O, and its molar m…

Posted on: August 27, 2025 Last updated on: August 27, 2025 Written by: Anonymous
The empirical formula of a compound is CH2O, and its molar mass is 90 g. What’s the molecular formula?
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Which one is the correct formula of carbon monoxide?

Posted on: August 27, 2025 Last updated on: August 27, 2025 Written by: Anonymous
Which one is the correct formula of carbon monoxide?
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When the equation below is balanced, the coefficient of alum…

Posted on: August 27, 2025 Last updated on: August 27, 2025 Written by: Anonymous
When the equation below is balanced, the coefficient of aluminum chloride is:  AlCl3 + H2SO4 → Al2(SO4)3 + HCl
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Select the balanced equation for the combustion of ethylene,…

Posted on: August 27, 2025 Last updated on: December 24, 2025 Written by: Anonymous
Select the balanced equation for the combustion of ethylene, C2H4 shown below.
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What’s the molecular formula of a compound that contains 40%…

Posted on: August 27, 2025 Last updated on: December 24, 2025 Written by: Anonymous
What’s the molecular formula of a compound that contains 40%C, 6.66%H and 53.3% O. (Molar mass of this compound is 150 g)
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Which of the choice below show the correct charge and mass f…

Posted on: August 27, 2025 Last updated on: August 27, 2025 Written by: Anonymous
Which of the choice below show the correct charge and mass for the corresponding sub atomic particle.
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Which on the the single replacement reaction?

Posted on: August 27, 2025 Last updated on: August 27, 2025 Written by: Anonymous
Which on the the single replacement reaction?
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By 2050, which country is expected to have the world’s large…

Posted on: August 27, 2025 Last updated on: December 24, 2025 Written by: Anonymous
By 2050, which country is expected to have the world’s largest Muslim population?  
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