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TiliK225 [7]
3 years ago
7

What element is denoted by 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d1

Chemistry
2 answers:
Anestetic [448]3 years ago
7 0

Element 39....Yttrium

alexgriva [62]3 years ago
4 0

The answer is Zr (Zirconium)

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What is the molarity of a 250.0 milliliter aqueous solution of sodium hydroxide that contains 15.5 grams of solute
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There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. The concentration of the solution is calculated as follows:

 <span> </span><span>Molarity = 15.5 g NaOH (1 mol NaOH / 40 g NaOH)  / .250 L solution</span>

<span>Molarity = 1.55 M</span>

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3 years ago
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Answer:

Explanation:1 g CH

4

​

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8 0
1 year ago
Question 10
olga2289 [7]

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Hope this helps

Explanation:

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3 years ago
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olga2289 [7]

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