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Dafna1 [17]
3 years ago
5

Aristonun teorisini çürüten bilim adamı

Chemistry
1 answer:
Paraphin [41]3 years ago
3 0
Can you please translate to English?
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PLEASE HELP<br> Describe two physical characteristics of ionic compounds.
RUDIKE [14]

Answer:

High melting points and boiling points

Aqueous solutions are good conductors of electricity

Explanation:

The oppositely-charged ions have strong attractions for each other, so it takes much energy to separate them.

When the ions are the molten state or in aqueous solution, they are free to move towards the oppositely-charged electrodes. The movement of charge constitutes an electric current.

7 0
3 years ago
Calculate the volume of carbon dioxide and water vapour produced and the volume of oxygen remaining, when 20.0 dm3 of propane re
laiz [17]

Answer:

80cm3 of water, and 60cm3 carbon IV oxide is formed while 20cm3 of oxygen is left unreacted.

Explanation:

From Gay-Lussac's law, there are five volumes of oxygen, 1 volume if propane, 4 volumes of water and three volumes of CO2. Applying this shows the reacting volumes as we have in the image attached, hence the volumes left after reaction.

6 0
3 years ago
Determine the temperature of 1.42 mol of a gas contained in a 3.00-L container at a pressure of 123 kPa
Rashid [163]

Answer:

The temperature is 30,92K

Explanation:

We use the formula PV=nRT. We convert the unit of pressure in kPa into atm.

101,325kPa----1atm

121kPa-------x=(121,3kPax 1 atm)/101,325kPa=1, 2 atm

PV=nRT---->T= (PV)/(RT)

T=(1,2 atm x 3L)/(1,42 mol x 0,082 l atm/K mol )= 30, 91721058 K

6 0
4 years ago
How does a physical change differ from a chemical change?
k0ka [10]

A physical change doesn't change what the substance is but for chemical change a new substance is formed and energy is either given off or absorbed.

5 0
4 years ago
Read 2 more answers
Which of the following is NOT the property of a non-metal? A. Non-rigid structure B. Not ductile C. Low density D. Malleable
Vedmedyk [2.9K]

Answer:

The answer is D.

Explanation:

Malleable is the property of <u>m</u><u>e</u><u>t</u><u>a</u><u>l</u> not non-metal.

4 0
4 years ago
Read 2 more answers
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