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rewona [7]
3 years ago
6

2 1.2.4 Quiz: Units and Measurement

Chemistry
1 answer:
lesya [120]3 years ago
7 0
For physics the answer is 47500
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1. A gas has a volume of 50.0 mL at a temperature of -73°C. What volume
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This is your answer:


-13 degrees C
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3 years ago
How many moles of glucose are produced? <br><br><br><br> How many moles of oxygen are produced?
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Explanation:

5.00 mol H2O × (1 mol C6H12O6/6 mol H2O)

= 0.833 mol C6H12O6

5.00 mol H2O × (6 mol O2/6 mol H2O)

= 5.00 mol O2

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3 years ago
A 1.28-kg sample of water at 10.0 °C is in a calorimeter. You drop a piece of steel with a mass of 0.385 kg at 215 °C into it. A
Kryger [21]

Answer:

T_{2}=16,97^{\circ}C

Explanation:

The specific heats of water and steel are  

Cp_{w}=4.186 \frac{KJ}{Kg^{\circ}C}

Cp_{s}=0.49 \frac{KJ}{Kg^{\circ}C}

Assuming that the water and steel are into an <em>adiabatic calorimeter</em> (there's no heat transferred to the enviroment), the temperature of both is identical when the system gets to the equilibrium T_{2}_{w}= T_{2}_{s}  

An energy balance can be written as

m_{w}\times Cp_{w}\times (T_{2}- T_{1})_{w}= -m_{s}\times Cp_{s}\times (T_{2}- T_{1})_{s}  

Replacing

1.28Kg\times 4.186\frac{KJ}{Kg^{\circ}C}\times (T_{2}-10^{\circ}C)= -0.385Kg\times 0.49 \frac{KJ}{Kg^{\circ}C} \times (T_{2}-215^{\circ}C)

Then, the temperature T_{2}=16,97^{\circ}C

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A car traveling at a constant speed goes around a sharp curve. Is the car accelerating? Explain.
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Yes the car is accelerating because it is changing direction as it goes around the corner
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Which of the following liquids is basic?
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Milk is the most basic liquid
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