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ankoles [38]
3 years ago
13

The first task you are assigned in your summer laboratory job is to prepare a concentrated naoh stock solution. the molecular we

ight of naoh is 40. how many grams of solid naoh will you need to weigh out to obtain a 750 ml solution that has a concentration of 8 m?
Chemistry
1 answer:
tensa zangetsu [6.8K]3 years ago
7 0

240 g NaOH

<em>Step 1</em>. Calculate the moles of NaOH

Moles of NaOH = 0.750 L solution × (8 mol NaOH/1 L solution) = 6 mol NaOH

Step 2. Calculate the mass of NaOH

Mass of NaOH = 6 mol NaOH × (40 g NaOH/1 mol NaOH) = 240 g NaOH

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Hydrogen bonds form between molecules containing _________ bonds; the hydrogen bond is between a hydrogen atom of one molecule a
nasty-shy [4]

Answer:

The answer is A. Polar covalent; negatively

Explanation:

Hydrogen bonds form between molecules containing polar covalent bond the hydrogen bond is been a hydrogen atom of one molecule and a partially negative charged atom of another.

Example H_{2}O (water):- It contain a slight positive charge on one side and a slight negative charge on the other.

5 0
3 years ago
Which type of bond will most likely be found in HBr?
NARA [144]
<span>HBr is covalent bond.!

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6 0
2 years ago
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Please help me with this quick!!
Katen [24]

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7 0
2 years ago
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Is freshwater a mixture?
dem82 [27]

Answer:

No

Explanation:

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7 0
2 years ago
How many moles of sulfur trioxide are formed from 3 moles of oxygen using the given
fiasKO [112]

Answer:

6 moles of SO₃ formed.

Explanation:

Given data:

Number of moles of SO₃ formed = ?

Number of moles of oxygen react = 3 mol

Solution:

Chemical equation;

2SO₂+ O₂      →   2SO₃

now we will compare the moles of oxygen and sulfur trioxide.

                             O₂            :            SO₃

                               1             :             2

                               3            :           2/1×3 = 6 moles

Thus, six moles of SO₃ will formed.

8 0
2 years ago
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