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Snezhnost [94]
3 years ago
11

Which of the following elements can replace Zinc in a single replacement reaction?

Chemistry
1 answer:
noname [10]3 years ago
6 0

Answer:

mqgnesium

Explanation:

if ur gonna question my knowledge dont ask for it. just trust

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A balloon contains 2.0 L of air at 101.5 kPa . You squeeze the balloon to a volume of 0.25 L.
8_murik_8 [283]
<h3>Answer:</h3>

812 kPa

<h3>Explanation:</h3>
  • According to Boyle's law pressure and volume of a fixed mass are inversely proportional at constant absolute temperature.
  • Mathematically, P\alpha \frac{1}{V}

At varying pressure and volume;

P1V1=P2V2

In this case;

Initial volume, V1 = 2.0 L

Initial pressure, P1 = 101.5 kPa

Final volume, V1 = 0.25 L

We are required to determine the new pressure;

P2=\frac{P1V1}{V2}

Replacing the known variables with the values;

P2=\frac{(101.5)(2.0L)}{0.25L}

           = 812 kPa

Thus, the pressure of air inside the balloon after squeezing is 812 kPa

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3 years ago
Can you please help with question 1 and 4​
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Answer:

i) 24.305 u

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If you multiply an objects weight times it height, what value do you compute?
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It might calculate the volume, but you need the length as well, depending on the object.
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The answer is not a whole number but its 3.12903225806452.....
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What is the acceleration of a 5 kg mass pushed by a 10 N force?
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Answer:

Here the force is 10N and the mass is 5 kg. Dividing both sides by 5kg, we get a = 2 m/s^2.

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