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Phantasy [73]
3 years ago
11

Which one is an example of a chemical change please help

Chemistry
1 answer:
ivanzaharov [21]3 years ago
3 0
Answer is A, an iron nail rusting. Rusting is know as a chemical change. Iron and oxygen atoms react with each other to create a chemical reaction. This creates an new substance called iron oxide.
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How long does it take the Earth to move from Point A to Point C?
e-lub [12.9K]

Answer:

24 hours

Explanation:

8 0
2 years ago
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In Part B the given conditions were 1.00 mol of argon in a 0.500-L container at 18.0°C. You identified that the ideal pressure (
Natasha2012 [34]

Answer:

4,38%

small molecular volumes

Decrease

Explanation:

The percent difference between the ideal and real gas is:

(47,8atm - 45,7 atm) / 47,8 atm × 100 = 4,39% ≈ <em>4,38%</em>

This difference is considered significant, and is best explained because argon atoms have relatively <em>small molecular volumes. </em>That produce an increasing in intermolecular forces deviating the system of ideal gas behavior.

Therefore, an increasing in volume will produce an ideal gas behavior. Thus:

If the volume of the container were increased to 2.00 L, you would expect the percent difference between the ideal and real gas to <em>decrease</em>

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I hope it helps!

5 0
3 years ago
An evacuated 276 mL glass bulb weighs 129.6375 g. Filled with an unknown gas, the bulb weighs 130.0318 g. Calculate the gas dens
baherus [9]

Answer:

density=1.43 g/L

Explanation:

Since the density formula is density = mass / volume, we need to find out the mass of the gas and the volume is that of the container.

The mass of the gas is  130.0318 g-129.6375 g=0.3943 g

The gas volume is  276mL*(1L/1000mL) 0.276 L

density = mass / volume=0.3943g/0.276L

density =1.43g/L

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3 years ago
Electron pair geometry and molecular geometry may be the same or may be different.
soldier1979 [14.2K]
True. For example, electron domain geometry and molecular geometry of water and ammonia are different.
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Consider the reaction 2CuCl2 + 4K - 2Cul + 4KCI + 12. If 4 moles of CuCl2 react with 4 moles of KI, what is the limiting reactan
Free_Kalibri [48]
Haha i’m trying to do the same one i’ll make sure if i find out how too to get back to you!
8 0
3 years ago
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