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eimsori [14]
3 years ago
10

What is the molarity of a solution made by dissolving 18.4 g of potassium perchlorate in enough water to fill a 300.00 mL volume

tric flask to the calibration mark?
Chemistry
1 answer:
AysviL [449]3 years ago
3 0
The units of molarity are moles per liter; therefore, in order to compute the molarity, we must first find the moles of potassium perchlorate and the volume in liters:
Moles = mass / molecular mass
Moles = 18.4 / 138.6
Moles = 0.13 mol

Volume = 300 mL
1 L = 1000 mL
Volume = 0.3 mL

Molarity = moles / liters
Molarity = 0.13 / 0.3
Molarity = 0.43 M
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This energy level is expressed in the form of electron configurations.  

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Cl : [Ne] 3s²3p⁵

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6 0
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What us the goal of distillation
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A nugget of gold has a mass of 28 grams and a volume of 1.45 cubic centimeters. What is the density?
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Steps:

ρ =  m/v

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Which of the following pairs of elements is most likely to form an ionic compound?1.Nitrogen and sulfur? OR 2. Magnesium and Flu
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When two different atoms have similar atraction for electrons (electronegativity) they will not donate to nor catch electrons from each other, so cations and anions will not be formed. Instead, the atoms would prefer to share electrons forming covalent bonds to complete their outermost shell (octet rule).

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