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Alisiya [41]
3 years ago
7

What is the number of moles of solute in 250 mL of a 0.4 M solution?

Chemistry
1 answer:
mafiozo [28]3 years ago
3 0

Answer:

0,1 mol

Explanation:

We know that the formula of concentration is C= moles of solute/ volume  

0,4 M= moles of solute/ 250 mL

Convert mL to L      250 mL =0,25 L

0,4 M x 0,25 L= moles of solute

0,1 moles= moles of solute

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The car's velocity after 5s : 10 m/s

<h3>Further explanation</h3>

Given

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time=t = 5 s

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Required

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\tt v_f=20+(-2).5\\\\v_f=20-10\\\\v_f=10~m/s

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3 years ago
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Explanation:

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the formation of cations by using electron dot structures are :

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b) Sr :  

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A Lewis electron dot diagram is a representation of the valence electrons of an atom that employments specks around the image of the element. The number of dots equals the number of valence electrons within the molecule. These dots are arranged to the right and left and over and underneath the symbol, with no more than two dots on a side. Cations are the positive ions shaped by the loss of one or more electrons. The foremost commonly shaped cations of the representative elements are those that include the loss of all of the valence electrons.

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1 year ago
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Elden [556K]

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