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HACTEHA [7]
3 years ago
7

If a balloon containing 1,200 L of gas at 25°C and 760 mmHg pressure ascends to an altitude where the pressure is 380 mmHg and t

he temperature is 54°C, the volume will be: (Be sure to use the correct number of significant figures.)
Chemistry
1 answer:
Tanya [424]3 years ago
3 0
The number of significant figures is 2.

The formula to use is [p1*V1 / T1] = [p2*V2 / T2] => V2 = p1*V1*T2 / [T1*p2]

V1 = 1200 L
T1 = 25 °C + 273.15 = 298.15 k
p1 = 760 mmHg

p2 = 380 mmHg
T2 = 54° C + 273.15 = 327.15 k

V2 = 2633.44 L = 2600 L (using 2 significant figures)
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2 years ago
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spayn [35]

Answer:

0.571 mol

Explanation:

Given data:

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Solution:

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Now we will compare the moles of CO₂ with NaHCO₃ from balance chemical equation.

                             NaHCO₃          :            CO₂

                                    1                :               1

                                 0.571            :            0.571

So number of moles of CO₂  produced are 0.571.

3 0
3 years ago
Read 2 more answers
One isotope of Br has a half-life of 16.5 hours. How much of a 2.00 gram sample remains at the end of 1.00 day?
valina [46]

Answer:

half life=16.5hrs

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Explanation:

4 0
3 years ago
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Oksanka [162]
<h2>Answer : Option B) The hematite particles rearrange to form a new substance.</h2><h3>Explanation :</h3>

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As a chemical changes is usually a change where a substance undergoes a chemical change and forms a new substance; which cannot be easily reversed into reactants by any simple physical methods.

In this example the hematite ore forms a new substance by an irreversible chemical change.

8 0
3 years ago
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Answer:

a. 4166,67 b. 74553.0

Explanation:

6 0
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