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grin007 [14]
3 years ago
14

According to the nebular theory what are asteroids and comets

Chemistry
1 answer:
Nimfa-mama [501]3 years ago
4 0
Asteroids are made up of metals and rocky material , while comets are made up of ice ,dust and rocky material.   
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A helium balloon has a volume of 2.5 L. When heated to 343.5K the pressure of the gas is 66.7 kPa. How many moles of He gas woul
Lelu [443]

Answer:

0.06mole

Explanation:

Given parameters:

Volume of balloon = 2.5L

T = 343.5K

P  = 66.7kPa; in atm  gives  = 0.66atm

Unknown:

Number of moles of He  = ?

Solution:

To solve this problem, we use the ideal gas equation.

 It is mathematically expressed as;

               Pv = nRT

  where  p is the pressure

              v is the volume

               n is the number of moles

               R is the gas constant

               T is the temperature

      0.66 x 2.5  = n x 0.082 x 343.5

                      n  = 0.06mole

8 0
3 years ago
Which molecule is polar, based on structure? 1) sulfur dioxide 2) carbon disulphide 3) ethylene 4) carbon tetrachloride
Savatey [412]
I think the correct answer from the choices listed above is option 1. It would be the molecule carbon disulphide that will be polar, based on the structure of the choices given. Hope this answers the question. Have a nice day. Feel free to ask more questions.
4 0
3 years ago
Read 2 more answers
Is tillite a mineral or a rock
yanalaym [24]

Answer:

sedimentary rock

Explanation:

4 0
2 years ago
What units should they have used in order to make the correct conversion
grandymaker [24]
We need to see your problem/question you’re talking about to answer it
5 0
3 years ago
Most metals are solid at room temperature, malleable, ductile, good conductors of heat and electricity, and react in acids to pr
Evgen [1.6K]

Answer:

The answer to your question is:   "react with acids to produce hydrogen gas"

Explanation:

Chemicals properties of matter: are properties that can be measured if there is a chemical change or chemical reaction.

Examples of chemical reactions:

Reactivity

Toxicity

Coordination number

Flammability

Of the properties listed, the only that implies a reaction is "react with acids to produce hydrogen gas"

7 0
3 years ago
Read 2 more answers
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