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Yuri [45]
3 years ago
6

When a pure substance was heated a chemical reaction occurred, and a student obtained another solid and a gas, each of which was

a substance?
Chemistry
1 answer:
bija089 [108]3 years ago
8 0
The original solid is not an element
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Is A B C or D I need help
Citrus2011 [14]
Your answer would be D!;)
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3 years ago
A 65.0-gram sample of some unknown metal at 100.0° C is added to 177.1 grams of water at 24.5° C. The temperature of the water r
jeka94
<span>B.) 0.900 J/ (°C × g). </span>
7 0
3 years ago
A gas occupies the volume of 215ml at 15C and 86.4kPa?
kherson [118]

Answer:

About 0.1738 liters

Explanation:

Using the formula PV=nRT, where p represents pressure in atmospheres, v represents volume in liters, n represents the number of moles of ideal gas, R represents the ideal gas constant, and T represents the temperature in kelvin, you can solve this problem. But first, you need to convert to the proper units. 215ml=0.215L, 86.4kPa is about 0.8527 atmospheres, and 15C is 288K. Plugging this into the equation, you get:

0.8527\cdot 0.215=n \cdot 0.0821 \cdot 288\\n\approx 7.754 \cdot 10^{-3}

Now that you know the number of moles of gas, you can plug back into the equation with STP conditions:

1V=7.754 \cdot 10^{-3} \cdot 0.0821 \cdot 273\\V\approx 0.1738L

Hope this helps!

3 0
3 years ago
What is an example of an interest leading to a career choice
Leno4ka [110]

Answer:

An example of these would be "I have always been interested in cars so I became a auto mechanic." or "I have always been interested in cars so I decided to work at a car dealership."

Explanation:

A big interest that you have that leds you to pick a job related to that interest.

4 0
3 years ago
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Look at the diagram. De both lemas and humans have the traits listed at point D? Explain your reasoning​
Bogdan [553]

Answer:

WHAT DIAGRAM THX FOR POINTS THO

Explanation:

3 0
2 years ago
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