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Trava [24]
3 years ago
13

Describe the properties of microwaves using some of the prompt words listed below

Chemistry
1 answer:
diamong [38]3 years ago
7 0
Some important properties of microwaves are: They are reflected by metal surfaces. They heat materials if they can make atoms or molecules in the material vibrate. The amount of heating depends on the intensity of the microwave radiation, and the time that the material is exposed to the radiation.
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the solubilities of ammonia, carbon dioxide and oxygen in water at a constant temperature and pressure are in the ratio 27000:35
Paraphin [41]

As the intermolecular forces get weaker, the amount dissolved decreases. Ammonia can form hydrogen bonds with water thus allowing it to be more soluble. CO2 and O2 can only react through London forces, but since CO2 has a higher molecular mass, more electrons, it will have a larger in magnitude temporary dipole moment. This results in the CO2 being more soluble in water than O2.

The overall trend in solubility is NH3>CO2>O2

3 0
3 years ago
The specific heat of copper metal is 0.385 J/(g × °C). How much energy must be added to a 35.0 gram sample of copper to change t
Montano1993 [528]
Q = mC∆T 

<span>where: </span>
<span>q = heat </span>
<span>m = mass of substance = 35.0 grams </span>
<span>C = 0.385 J/g*C </span>
<span>∆T = change in temperature = 65C - 20C = 45C </span>

<span>q = (35.0 g)*(0.385 J/g*C)*(45C) = 606 J </span>
3 0
3 years ago
Which of the following solutions would have the lowest freezing point? 1.0 nacl 3.0 nacl 2.0 nacl or 5.0 nacl
Scilla [17]
The solution that will have the lowest freezing point is 5.0 SODIUM CHLORIDE. 
Adding solute to solvents usually result in the depression of the freezing point. The higher the quantity of the solute that is added, the lower the freezing point of the solution.
5 0
4 years ago
Read 2 more answers
Can somebody plz help answer this grade7science questions thanks!!! :D
Sophie [7]

Answer:

Kinetic Energy

Explanation:

Kinetic Energy is doing the work. Potential gives to the capability, Kinetic is the one that does it.

7 0
3 years ago
Tetrachloromethane, CCl4, is classified as a
Soloha48 [4]
Correct Answer: <span>compound because the atoms of the elements are combined in a fixed proportion.

Reason:
A </span><span> chemical </span>compound is a chemical substance composed of element (of same or different type) that are bonded in a fixed proportion. Depending upon the type of element, bond can be ionic or covalent. In present case, <span>tetrachloromethane i.e. CCl4 has one 'C' atom that is covalently bonded to four 'Cl' atoms. </span>
8 0
3 years ago
Read 2 more answers
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