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serious [3.7K]
3 years ago
12

What is the average pencil brand and type students use?

Chemistry
2 answers:
Nostrana [21]3 years ago
8 0
Dixon No. 2 is the average pencil brand and type that students use.
Rudiy273 years ago
6 0
Um a lot of people use Ticonderoga pencil number 2
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If a container contains 3.5 moles and has a volume of 1.5 L, then what volume is it when it contains 8 moles? *
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Volume would be 3.4 L
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3 years ago
At a certain temperature, 4.0 mol NH3 is introduced into a 2.0 L container, and the NH3 partially dissociates by the reaction. 2
xxMikexx [17]

Answer:

K = 3.37

Explanation:

2 NH₃(g) → N₂(g)  + 3H₂(g)

Initially we have 4 mol of ammonia, and in equilibrium we have 2 moles, so we have to think, that 2 moles have been reacted (4-2).

              2 NH₃(g)    →    N₂(g)  + 3H₂(g)

Initally       4moles             -            -

React        2moles           2m   +   3m

Eq             2 moles          2m        3m

We had produced 2 moles of nitrogen and 3 mol of H₂ (ratio is 2:3)

The expression for K is:  ( [H₂]³ . [N₂] ) / [NH₃]²

We have to divide the concentration /2L, cause we need MOLARITY to calculate K (mol/L)

K = ( (2m/2L) . (3m/2L)³ ) / (2m/2L)²

K = 27/8 / 1 → 3.37

5 0
3 years ago
Read 2 more answers
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oksano4ka [1.4K]
Na has a +1 charge, and O has a -1 charge.
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3 years ago
Which statement describes a problem with the peer review process in scientific research?
Snezhnost [94]
Its A.It can sometimes reject important new ideas or novel techniques.<span>
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3 years ago
2,65 Lt de un gas ideal se encuentran a 25°C y 1,2 atm de presión. Si se pasa el gas a un nuevo recipiente de 1,5 litros a una t
11111nata11111 [884]

Answer:

2.5 atm

Explanation:

P2 = 1.2 atm x 2.65 L x 345 K / 1.5 L x 298 K

Esto debería ser igual...

2.45 atm (personajes importantes)

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3 years ago
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