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Stolb23 [73]
3 years ago
9

Does aluminum dissolve in water? No explanation needed. Thanks!

Chemistry
1 answer:
marissa [1.9K]3 years ago
6 0
No. These are random words bc i need 20 characters to submit the answer
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A chemist prepares a solution of sodium thiosulfate by measuring out of sodium thiosulfate into a volumetric flask and filling t
marshall27 [118]

Mass of sodium thiosulfate Na_{2}S_{2}O_{3} is 110. g

Volume of the solution is 350. mL

Calculating the moles of sodium thiosulfate:

110. g Na_{2}S_{2}O_{3} * \frac{1 mol Na_{2}S_{2}O_{3}}{158.1 g Na_{2}S_{2}O_{3}} = 0.696 molNa_{2}S_{2}O_{3}

Converting the volume of solution to L:

350. mL * \frac{1 L}{1000 mL} = 0.350 L

Finding out the concentration of solution in molarity:

\frac{0.696 mol}{0.350 L} =  1.99 mol/L

4 0
4 years ago
What is the atomic mass of copper?
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Answer:

63.546 u

Explanation:

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3 years ago
How many moles of sulfur dioxide are in 2.26x10^33 sulfur dioxide molecules?
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Answer:moles = no. of molecules / Avogadro's number

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          = 3752906011

Round to significant figures which is 3 = 3.75 x 10^9 mol

Explanation:

The formula for finding how many moles of a substance when given the amount of molecules is: moles = number of molecules / Avogadro's number

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hope this helps :))

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