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Contact [7]
3 years ago
8

Which statement describes a chemical property of aluminnium?

Chemistry
2 answers:
balandron [24]3 years ago
8 0
Aluminium reacts with sulphuric acid
NeX [460]3 years ago
4 0

Answer:

Aluminium reacts with sulphuric acid

Explanation:

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Which federal agency makes sure federal wildlife laws are followed?
goldfiish [28.3K]

Answer:

us fish and wildlife service

Explanation:

the 2nd choice

8 0
3 years ago
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Calculate the percentage by mass of oxygen in Al2(SO4)3 (Al=27, S=32,O= 16) PLEASE SHOW FULL WORKING​
White raven [17]

Answer:

There is 61.538% oxygen in Al2(SO4)3.

Explanation:

Wt Of oxygen in the compound = 12*16 = 192 amu.

Total Wt. Of the compound = 2*12+3*32+12*16 = 312 amu.

Thus, percent of oxygen = Wt of oxygen/total Wt. Of compound *100

= 192/312 * 100=61.538 %

6 0
3 years ago
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Two gas cylinders have identical volumes and contain gases at identical temperatures and pressures. Cylinder A contains hydrogen
liraira [26]

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c

Explanation:

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3 years ago
Which statement is true?
shusha [124]

Answer: the second one for sure HOPE IT HELPD HAVE A AWSOME DAY :))))))))

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3 0
2 years ago
Solid sodium reacts violently with water producing heat, hydrogen gas and sodium hydroxide. How many molecules of hydrogen gas a
nignag [31]
Find the number of moles of sodium you have: 
<span>n = m/M where m is your 20g of sodium and M is 22.99 g/mol. </span>

<span>Look at the stoichiometry of the equation - it's 2:2 when you are producing NaOH. So if you took 1 mole of Na, it'd produce 1 mole of NaOH (as the ratio is equal). </span>

<span>That means that your moles of sodium is equal to the moles of NaOH produced. Use the molar mass of NaOH - which is 39.998 g/mol along with your calculated number of moles to get the mass (the formula rearranges to m = nM). </span>

<span>This figure is the theoretical yield - what you would get if every last mole of sodium was converted into NaOH. </span>

<span>What you get in practice is the experminetal yield, and the percentage yield is the experimental yield divided by the theoretical yield - and then multiplied by 100%.</span>
4 0
3 years ago
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