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ipn [44]
3 years ago
12

How many moles are in 74 g KI?

Chemistry
1 answer:
nexus9112 [7]3 years ago
7 0
N=?
m=74g
n=m:Mr
Mr (Cl)=35,5g/mol
n=74g:35,5g/mol
n=2,08mol
I think this is the answer, hope I am right!
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How many moles of sodium hydroxide are there in 1.0mL of 2.0M NaOH
kvasek [131]
To find the moles, you can use the following formula

moles= Molarity x Liters

Molarity= 2.0 M
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4 0
2 years ago
Please help me i keep getting this wrong :(
solmaris [256]
A) <span>A chandelier has been hanging in the kitchen for years
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C) </span><span>You place your book on the top of a flat table

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7 0
3 years ago
a student determined that it requires 106220 j of energy to vaporize 47g of water. is the student is right​
shusha [124]
<h2>Answer:</h2>

He is right that the energy of vaporization of 47 g of water s 106222 j.

<h3>Explanation:</h3>

Enthalpy of vaporization or heat of vaporization is the amount of energy which is used to transform one mole of liquid into gas.

In case of water it is 40.65 KJ/mol. And 18 g of water is equal to one mole.

It means for vaporizing 18 g, 40.65 kJ energy is needed.

So for energy 47 g of water = 47/18 * 40.65 = 106.1 KJ

Hence the student is right about the energy of vaporization of 47 g of water.

7 0
3 years ago
Isaac the robot needs to travel from his charging station to school. Isaac travels 5 km south, 3 km west, 2 km north and 3 km ea
ladessa [460]

Answer:

13 km  

Explanation:

Distance travelled = 5 km + 3 km + 2 km + 3 km = 13 km

 

3 0
2 years ago
Citric acid has a pH between 1 and 3. It is considered to be a
Tasya [4]
Strong Acid cause it has a very low pH
5 0
2 years ago
Read 2 more answers
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