01/30/23

Practice question
An electrolyte solution was prepared by dissolving 40.0 g of KCl (molar mass 74.55g) in 2.000 kg of water. According to this data, the freezing point of this solution is:
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01/26/23

Homework question
How to solve the mass of a substance in 500ml of another solution, knowing the substance’s molar mass?
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01/26/23

Jayna has 8 dimes and quarters. if she has $1.10 in change, then how many of each coin does she have
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01/26/23

How many moles of oxygen gas (O2) will be produced when 4.8 moles of hydrogen peroxide (H2O2) decompose according to the reaction below?
2 H2O2  → 2 H2O + O2
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01/23/23

have a problem with this math question
One month Boris rented 5  movies and 6  video games for a total of $42 . The next month he rented 3  movies and 2  video games for a total of $16 . Find the rental cost for each movie and each... more
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