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irinina [24]
3 years ago
7

Plz help me it a timed test

Chemistry
1 answer:
Shtirlitz [24]3 years ago
6 0

Answer:

B

Explanation:

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4 0
4 years ago
A student added 500 mL of water to 200 mL of 0.20M NaCl solution. Which of the following is True?
tamaranim1 [39]

Option B is true , the same number of moles of solute in both solution is the same.

<h3>What is Molarity?  </h3>

Molarity is the ratio of no of moles as per liter solution. It is denoted by M and SI unit is also M or moles/litre.

Molarity = no . Of moles/Volume (L)  

In this question the amount of solution is increased means the volume is increased from 500-700ml it is increased , Molarity is inversly proportional of Volume

it will decrease if volume increase. Adding water do affect the concentration of the solution. The no. Of moles of solute remains because there no increament in amount of NaCl .

Hence ,option B is more correct

to learn more about Molarity click herehttps://brainly.com/question/27931587

#SPJ9

8 0
1 year ago
How many grams of O2 are produced as 0.033 mol of water decompose
PolarNik [594]

Answer:  This can be quickly solved with "traintracks"

Explanation:

You start w/ grams of water and want to find moles of oxygen gas produced.  

So you want to Convert:  

Grams of water -> moles of water -> moles of oxygen gas.  

The two things you need to know to set up the tracks are:  

1)Molar mass of water- H2O  

Hydrogen - 1.008(x2)  

Oxygen - 16.00  

Water - 18.016

6 0
3 years ago
PLEASE ANSWERRRRRRRRRRRRRRRRR
earnstyle [38]
1. friction that’s all i know lol
5 0
4 years ago
How many moles of O₂ would be required to generate 13.0 mol of NO₂ in the reaction below assuming the reaction has only 60.6% yi
saw5 [17]

Answer:

116 is the right answer of these

3 0
3 years ago
Read 2 more answers
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