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olga2289 [7]
3 years ago
15

Which element is a metalloid?

Chemistry
1 answer:
koban [17]3 years ago
3 0
Which element is a metalloid? <span>B. Silicon (Si)
</span>
Looking at the periodic table, which element is a metal? <span>D. Strontium (Sr)
</span>Argon (Ar) is a noble gas, silicon (Si) is a metalloid, hydrogen (H) is a non-metal, and strontium is a alkaline earth metal.
<span>
I have used the periodic table from </span><span>http://chemreference.com/elements/1/properties?display=periodic&trend=number to help me when I'm unsure.</span>
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What is the concentration of H+ ions at a pH = 2?
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<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

In Step 5, you will calculate H+/OH– ratios for more extreme pH solutions. Find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide for a solution at a pH = 2. Then divide the H+ concentration by the OH– concentration. Record these concentrations and ratio in Table C.

What is the concentration of H+ ions at a pH = 2?

<h3>0.01   mol/L  </h3>

What is the concentration of OH– ions at a pH = 2?

<h3>0.000000000001   mol/L   </h3>

What is the ratio of H+ ions to OH– ions at a pH = 2?

<h3> 10,000,000,000 : 1</h3>

<em>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</em>

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2 moles of LiOH requires 1 mole of H₂SO₄

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