2 years ago

How can you tell that a compound contains an ionic bond

1 answer:

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Is this a scienctif question cuss if so it not only helps u with math there’s a lot of subsists like history math English etc....

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vladimir2022 [97]

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A cube of plastic 1.2x10^-5 km on a side has a mass of 1.1 g. what is its density in g/cm^3

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Length of 1 side 1.2*10^-5km =1.2*10^-5*10^5 =1.2cm

<span>volume of the cube (1.2)^3=1.728 cm^3 </span>

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3 years ago

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Do sec-butyl alcohol has two stereoisomers.

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2 years ago

5. 16.3 g of NaCl is dissolved in water to make 1.75 L of solution. What is the molarity of this solution? A 0.159 M B 0.278 M C

ira [324]

Answer: The molarity of this solution is 0.159 M.

Explanation:

Given: Mass of solute = 16.3 g

Volume = 1.75 L

Number of moles is defined as the mass of substance divided by its molar mass.

Hence, moles of NaCl (molar mass = 58.44 g/mol) ar calculated as follows.

$Moles = \frac{mass}{molar mass}\\= \frac{16.3 g}{58.44 g/mol}\\= 0.278 mol$

Molarity is the number of moles of a substance present in a liter of solution.

So, molarity of the given solution is calculated as follows.

$Molarity = \frac{no. of moles}{Volume (in L)}\\= \frac{0.278 mol}{1.75}\\= 0.159 M$

Thus, we can conclude that the molarity of this solution is 0.159 M.

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2 years ago