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klemol [59]
3 years ago
8

Which of the following represent chemical processes? Which represent physical processes?

Chemistry
1 answer:
Viktor [21]3 years ago
7 0

Answer:

A). Calcium chloride dihydrate (CaCl2 * 2H2O) slowly heated in a crucible to become calcium chloride (anhydrous).

Dehyration is a physical process

B). A hydrocarbon such as propane (C3H8) undergoes combustion to power a grill

Combustion is a chemical process.

C). A rock climber’s rope becomes frayed and turns the color of the rocks

This is physical process

D). A dog urinates on an air conditioner coil and the coil becomes corroded

Corrsion is a chemical process.

Explanation:

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The following are in order of increasing boiling temperatures: (A) RbCl
andrew11 [14]

Answer:

Option E

RbCL<CH3OH< CH3Cl< CH4

Explanation:

The boiling temperature of an organic compound increases with the increase in number of carbon atoms and hence as the length of the hydrocarbon chain increases the boiling temperature also increase due to increase in force of attraction between the molecules. Also presence of strong molecules such as OH – COOH also increases the boiling temperature while Cl and other elements with high electronegativity reduces the boiling temperature  

Hence, the correct order of increasing boiling temperature is option E

RbCL<CH3OH< CH3Cl< CH4

5 0
3 years ago
Jason has five equally massed lead fishing weights, each weighing 250 grams. What is the total mass of the five leaf fishing wei
shusha [124]

Answer:

Total mass of 5 lead fishing weights= 1250 grams

Explanation:

Given:

Mass of a lead fishing weight =250 grams

To find total mass of 5 such fishing weights

We can apply unitary method to find total mass of 5 fishing weights.

If mass of 1 lead fishing weight = 250 grams

∴ Total mass of 5 lead fishing weights = 250\times 5 =1250\ grams

5 0
3 years ago
What kind of chemical change do you think occurs when a banana peel turns brown in the open air?
sineoko [7]
It has to be oxydation. Oxygen is what slowly poisons us until we die and makes us wrinkle.
4 0
4 years ago
Read 2 more answers
A airliner has an internal pressure of 1.00 ATM and temperatures of 25°C at take off if the temperature of the airlines routes t
Georgia [21]

Answer:

Explanation:

Using Gay lussac's law equation as follows;

P1/T1 = P2/T2

7 0
3 years ago
5. A sample of methane has a volume of 225 mL at 0.650 atm of pressure. What will the new volume be if the
Norma-Jean [14]

Answer:

not sure

Explanation:

8 0
3 years ago
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