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My name is Ann [436]
2 years ago
9

What is the most well known supercontinent?

Chemistry
2 answers:
Oxana [17]2 years ago
8 0

Answer:

Pangea

Explanation:

KIM [24]2 years ago
5 0

Answer:

Pangaea

FILLER FILLER FILLER

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Aluminum sulfate, known as cake alum, has a wide range of uses, from dyeing leather and cloth to purifying sewage. In aqueous so
NISA [10]

Answer:

a) The chemical reaction is given as:

6NaOH(aq)+Al_2(SO_4)_3\rightarrow 2Al(OH)_3(s)+3Na_2SO_4(aq)

2.571 grams of aluminum hydroxide is precipitated.

Explanation:

a) The chemical reaction is given as:

6NaOH(aq)+Al_2(SO_4)_3\rightarrow 2Al(OH)_3(s)+3Na_2SO_4(aq)

b)

Moles of NaOH = n

Volume of the NaOH = 185.5 mL = 0.1855 L( 1 mL =0.001 L)

Molarity of the solution = 0.533 M

n=0.533 M\times 0.1855 mL=0.09887 mol

Moles of aluminum = n

15.8 g of aluminum sulfate per liter.

Volume of solution = 627 mL = 0.627 L (1 mL= 0.001 L)

Mass of aluminium sulfate in solution = 15.8 g/L × 0.627 L =9.9066 g

Moles of aluminum sulfate = \frac{9.9066 g}{342 g/mol}=0.02897 mol

Moles of NaOH = 0.09887 mol

According to reaction, 6 moles of NaOH reacts with 1 mole of aluminum sulfate, then 0.09887 moles of NaOH will recat with :

\frac{1}{6}\times 0.09887 mol=0.01648 mol

This means that sodium hydroxide moles are in limiting amount.So, amount of aluminum hydroxide will depend upon moles of sodium hydroxide.

According to reaction, 6 moles of sodium hydroxide gives 2 moles of aluminium hydroxide, then 0.09887 moles of sodium hydroxide will give :

\frac{2}{6}\times 0.09887 mol=0.03296 mol of aluminum hydroxide

Mass of 0.03296 moles of aluminum hydroxide:

0.03296 mol × 78 g/mol = 2.571 g

2.571 grams of aluminum hydroxide is precipitated.

8 0
3 years ago
What is the correct name for Na2CO3
LiRa [457]

Answer:

Sodium carbonate

Explanation:

6 0
3 years ago
Read 2 more answers
Erica is working in the lab. She wants to remove the fine dust particles suspended in a sample of oli. What method is she most l
patriot [66]

Erica is likely to use reverse osmosis process.it is the method used in the industry to treat water in oil and gas industry .or ultra filtration method is also employed

7 0
3 years ago
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What is the strongest attractive force of KCl?
Slav-nsk [51]

Answer: Ionic attractions

Explanation:

The hydrated K+ and Cl- ions exhibit coulombic forces of attraction.

4 0
2 years ago
For an entire species to survive, it must allow for new generations to maintain the population. This is the challenge of _______
a_sh-v [17]
I think it’s gathering food or maintaining structure.
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