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Fofino [41]
3 years ago
5

Recycling plants sort material by their volume and melting point. Machines will do this quickly so large amounts of material can

be sorted. Which intensive property would be most useful to sort the material by?
Chemistry
1 answer:
Dennis_Churaev [7]3 years ago
6 0

Answer:

Density

Explanation:

Intensive properties are those properties that do not depend on the size of the system or on the amount of matter in the system.

If materials are being sorted out for recycling, then materials can be sorted in accordance with their different densities and packed as such, this is quite a convenient way of sorting out the materials for recycling, hence the answer above.

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In an experiment, 107.9 grams of H2SO, is produced when 196.2 grams
Ipatiy [6.2K]

Answer:

54.99% yield

Explanation:

percent yield is just the amount you obtained over the amount expected times 100%.

(experimental value/theoretical value) x 100%

= (107.9 g/196.2 g) x 100%

=54.99% yield

5 0
3 years ago
What is the charge of the following polyatomic ions
Veronika [31]

Answer:

D

Explanation:

D

3 0
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Match the substance with its chemical formula.
ch4aika [34]
H 3 0 + is hydronium ion. OH- is hydroxide ion. H+ is hydrogen ion
4 0
4 years ago
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When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced. 2 Al ( s ) + 6 HCl ( aq ) ⟶ 2 AlCl 3 ( aq )
Dovator [93]

Answer:

The volume of hydrogen gas produced at STP is 4.90 liters.

Explanation:

2Al (s) + 6 HCl (aq)\rightarrow 2 AlCl_3 (aq) + 3 H_2 (g)

Moles of aluminium =\frac{3.60 g}{27 g/mol}=0.1333 mol

According to reaction , 2 moles of aluminium gives 3 moles of hydrogen gas.

Then 0.1333 moles of aluminium will give:

\frac{3}{2}\times 0.1333 mol=0.2 moles of hydrogen gas

Volume of 0.2 moles of hydrogen gas at STP = V

Temperature at STP = T = 298.15 K

Pressure at STP = P = 1 atm

n = 0.2 mol

PV = nRT (Ideal gas equation)

V=\frac{nRT}{P}=\frac{0.2mol\times 0.0821 atm L/mol K\times 298.15 K}{1 atm}=4.8956 L\approx 4.90 L

The volume of hydrogen gas produced at STP is 4.90 liters.

4 0
4 years ago
how many moles of sodium are present in a sample of sodium having a mass of 137 g? (molar mass is 23.0g)
vivado [14]

Answer:

5.95 moles

Explanation:

No of moles = given mass / molar mass

No of moles = 137/23

= 5.95 moles

7 0
4 years ago
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