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When 4 liters of hydrogen gas and 2 liters of oxygen gas rea…

When 4 liters of hydrogen gas and 2 liters of oxygen gas react to form water at a constant temperature and pressure, how many liters of water vapor (steam) will be formed? 2H2  +  O2 

Published March 2, 2021
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The physical state that does not retain its shape or volume…

The physical state that does not retain its shape or volume is:

Published March 2, 2021
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The boiling point of ethanol is 78oC. What is this temperatu…

The boiling point of ethanol is 78oC. What is this temperature on the Kelvin scale?

Published March 2, 2021
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An element with the electronic structure 1s22s22p2 is in whi…

An element with the electronic structure 1s22s22p2 is in which group of the periodic table?

Published March 2, 2021
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The sub-particle that emits a photon in an excited atom is a…

The sub-particle that emits a photon in an excited atom is a(n) ______________________.  

Published March 2, 2021
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The ground state electron configuration for phosphorus is:

The ground state electron configuration for phosphorus is:

Published March 2, 2021
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The ground state electron configuration for sulfur is:

The ground state electron configuration for sulfur is:

Published March 2, 2021
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How many moles of sodium nitrate, NaNO3 , contains 9.33 x 10…

How many moles of sodium nitrate, NaNO3 , contains 9.33 x 1022  NaNO3 formula units?

Published March 2, 2021
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A 25.3 cm3 gold sample has a mass of 488 g. What is the dens…

A 25.3 cm3 gold sample has a mass of 488 g. What is the density of gold in grams per cm3?

Published March 2, 2021
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The name of the ionic compound with a formula Kl is:

The name of the ionic compound with a formula Kl is:

Published March 2, 2021
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