Answer and Explanation:
To calculate this, simply use an equality of proportions:
50 particles : 1 billion particles = <em>x</em> tons : 1.49 million tons
The value of <em>x</em> can be solved for by multiplying the ratio on the left by the value 1.49 million / 1 billion:
So, <em>x</em> = (50)(0.00149) tons = 0.0745 tons
Then, do the same thing for the larger concentration:
<em>x</em> = (200)(0.00149) tons = 0.298 tons
Answer:
The pH is 4.76 (option C)
Explanation:
pH of a solution = TO BE DETERMNED
[sodium acetate] = 1M ; [acetic acid] = 1M
K = [H+] [A-] / [HA]
K = [H+] [1] / [1]
K = H
pH = pK
⇒ now pH is equal to pK
⇒ The value of pK is given which is 4.76
⇒ This means the value of the pH is also 4.76
Answer:
D.
It produces H* in solution.
Answer:
Mercury
Chemical element
Symbol: Hg
Explanation:
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Answer:
1.38 x 
atoms
Explanation:
To get grams to atoms/molecules/particles we need to first convert grams > moles > atoms. This also applies in the other direction, where you have moles as that stepping stone.
Some key information we need:
Magnesium's molar mass= 24g/mol
Avogadro's Number= 6.022 x 
atoms
Where there is 1 mol per 6.022 x atoms
*This maybe be something you want to memorize.
Grams to moles using molar mass , then to atoms using avogadro's number.
55g Mg x 
x 
= 1.38 x atoms
