Answer:
The concentration would be 0.76 mol/L.
The most common way to solve this problem is to use the formula
c1V1=c2V2
In your problem,
c1 = 4.2 mol/L; V1 = 45.0 mL
c2 = ?; V2 = 250 mL
c2=c1×V1V2 = 4.2 mol/L × 45.0mL250mL = 0.76 mol/L
This makes sense. You are increasing the volume by a factor of about 6, so the concentration should be about ¹/₆ of the original (¹/₆ × 4.2 = 0.7).
Explanation:
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Answer:
Nitrogen gas is a homogenous mixture!
Answer:
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Explanation:
I just completed it on apex
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Answer and Explanation:
Isotopes are same in atomic number and different in atomic mass. Isotopes have same number of electron and proton but different number of neutron and due to same proton their atomic numbers are same and due to different number of neutron their atomic mass are different because neutron also take part in atomic mass
