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Consider the following reaction: C3H8 + O2 → CO2 + H2O If 10…

Consider the following reaction: C3H8 + O2 → CO2 + H2O If 10.0 g of C3H8 were allowed to react with 10.0 g of O2, how many grams of CO2 would be produced?

Published August 3, 2025
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Silver nitrate and aluminum chloride react with each other b…

Silver nitrate and aluminum chloride react with each other by exchanging anions: 3 AgNO3 (aq) + AlCl3 (aq)

Published August 3, 2025
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In which of the following ions are the bond lengths expected…

In which of the following ions are the bond lengths expected to be the shortest?

Published August 3, 2025
Categorized as Uncategorized

A sample of CaCO3(s) absorbs 40.3 J of heat, causing its tem…

A sample of CaCO3(s) absorbs 40.3 J of heat, causing its temperatures to increase from 20.8 ºC to 27.3 ºC.  If the specific heat of CaCO3 (s) is 0.82 J/gK, what is the mass of the sample (in grams)?

Published August 3, 2025
Categorized as Uncategorized

Which of the following compounds contains pure covalent bond…

Which of the following compounds contains pure covalent bonds?

Published August 3, 2025
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The age of the earth has been estimated by scientists as 4.5…

The age of the earth has been estimated by scientists as 4.54 billion years (4.54 x 109 yr). If there was an imaginary unit of “Brigg” that was equal to 1,971 minutes, how old is the earth in Briggs? (you may disregard leap years in your calculation)

Published August 3, 2025
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Which compound below has a different empirical formula than…

Which compound below has a different empirical formula than the other three?

Published August 3, 2025
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A piece of pure aluminum foil is cut to dimensions of 5.00 c…

A piece of pure aluminum foil is cut to dimensions of 5.00 cm x 8.00 cm and its mass is measured as 0.282 g.  Given the density of Al is 2.70 g /cm3, and the diameter of a single Al atom is 2.86 x 10-8 cm, how many Al atoms span the thickness of the foil?

Published August 3, 2025
Categorized as Uncategorized

Which of these elements is paired incorrectly with its chemi…

Which of these elements is paired incorrectly with its chemical symbol?

Published August 3, 2025
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What will happen to the pressure of a gas if the volume is i…

What will happen to the pressure of a gas if the volume is increased by a factor of 4 while holding the temperature constant?

Published August 3, 2025
Categorized as Uncategorized

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