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lapo4ka [179]
3 years ago
8

Bicycles that have been left outside in the summer will rust faster than bicycles kept inside. What causes the bicycles that are

left outside to rust faster?
Bikes that are kept outside are not used as often, speeding up the chemical reaction of metal rusting.
Heat energy from the sun slows down the chemical reaction of the metal rusting.
Moisture and oxygen cause oxidation, which speeds up the chemical reaction of the metal rusting.
Wind energy outside speeds up the chemical reaction of the metal rusting.
Chemistry
1 answer:
professor190 [17]3 years ago
8 0

Bikes that are kept outside are not used as often, speeding up the chemical reaction of metal rusting.
Heat energy from the sun slows down the chemical reaction of the metal rusting.
Moisture and oxygen cause oxidation, which speeds up the chemical reaction of the metal rusting.
Wind energy outside speeds up the chemical reaction of the metal rusting.
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Alkanes can be prepared from carboxylic acid via the removal of carbon dioxide. This process is known as decarboxylation. It produces alkane with a carbon atom lesser than that present in the carboxylic acid.
4 0
2 years ago
When the pressure that a gas exerts on a sealed container changes from 893 mm hg to 778 mm hg, the temperature changes from 49.3
solong [7]

Answer: The final temperature of the gas is 7.58 °C.

Explanation: We are given initial and final pressure of the system and we need to find the final temperature of the system.

To calculate it, we use the equation given by Gay-Lussac.

His law states that pressure is directly related to the temperature of the gas.

P\propto T

Or,

\frac{P_1}{T_1}=\frac{P_2}{T_2}

where,

P_1 = initial pressure = 893 mmHg = 1.175atm (Conversion factor: 1atm = 760mmHg)

T_1 = initial temperature = 49.3°C = [49.3 + 273.15]K = 322.45K

P_2 = Final pressure = 778mmHg = 1.023atm

T_ = Final temperature = ?°C

Putting values in above equation, we get:

\frac{1.175atm}{322.45K}=\frac{1.023atm}{T_2}\\\\T_2=280.73K

Converting Final temperature from kelvin to degree Celsius.

T_2=280.73K=[280.73-273.15]^oC=7.58^oC

Hence, the final temperature of the gas is 7.58 °C.

5 0
3 years ago
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The reaction of C4H8 and Br2 to yield C4H2Br2 represents​
natima [27]

Answer:

A Synthesis Reaction

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8 0
3 years ago
The molarity of a 4.200 L solution is 1.230 M Na2CO3. What is the mass of Na2CO3
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Answer:

547.5g

Explanation:

To get the mass, you need moles.

moles = (molarity)(Liters)

moles = (1.230M)(4.200L) = 5.166 moles Na2CO3

Now, just use stoichiometry

molar mass of Na2CO3 = 2(mass of Na) + (mass of C) + 3(mass of O)

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5.166moles(105.99g/mol)

= 547.544

But, the measurements given had 4 significant figures, so in chemistry we write:

547.5g

7 0
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Why are atoms more stable when combined?
shepuryov [24]

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D

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