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2 years ago

Physical properties of a spoonful of sugar

2 answers:

7 0

Basically, a physical property is anything that can be observed without putting a substance through a chemical change. Among many others, a few physical properties of a spoonful of sugar include that it is white, has a grainy texture, and the grains are small in size. If you could calculate the density or boiling point of this spoonful of sugar, those would apply, as well. :)

sweet-ann [11.9K]2 years ago

4 0

Physical properties are describing the object.

-White
-Grainy
-Small
-Sweet
etc.

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The element with 8 electrons in its 3d sublevel is a. O. b. Ne. c. Ar. d. Ni.

Evgesh-ka [11]

The element with 8 electrons in its 3d sublevel is Ni, Nickel. The answer is letter D. The rest of the choices do not answer the question above.

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2 years ago

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Mercury orbits the sun at more than ten times the sun speed of Neptune

marysya [2.9K]

Answer: Yes, this is true.

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2 years ago

A sample of argon has a volume of 1.2 L at STP. If the temperature is increased to 21 c and the pressure is lowered to 0.80 atm,

Nuetrik [128]

Answer:

The new volume is 1.62 L

Explanation:

Boyle's law says:

"The volume occupied by a given gas mass at constant temperature is inversely proportional to the pressure." It is expressed mathematically as:

Pressure * Volume = constant

o P * V = k

Charles's law is a law that says that when the amount of gas and pressure are kept constant, the ratio between volume and temperature will always have the same value:

$\frac{V}{T}=k$

Gay-Lussac's law indicates that when there is a constant volume, as the temperature increases, the gas pressure increases. And when the temperature is decreased, the gas pressure decreases. So this law indicates that the quotient between pressure and temperature is constant.

Gay-Lussac's law can be expressed mathematically as follows:

$\frac{P}{T}=k$

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law.

$\frac{P*V}{T}=k$

Having an initial state 1 and a final state 2 it is possible to say that:

$\frac{P1*V1}{T1} =\frac{P2*V2}{T2}$

Standard temperature and pressure (STP) indicate pressure conditions P = 1 atm and temperature T = 0 ° C = 273 ° K. Then:

P1= 1 atm
V1= 1.2 L
T1= 273 °K
P2= 0.80 atm
V2= ?
T2= 21°C= 294 °K

Replacing:

$\frac{1 atm* 1.2 L}{273K} =\frac{0.8 atm*V2}{294K}$

Solving:

$V2=\frac{1 atm*1.2 L}{273 K} *\frac{294 K}{0.8 atm}$

V2= 1.62 L

The new volume is 1.62 L

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2 years ago

Does water and oil mix through,PLease help I need the answer!!!!!!!!!!!!!!!!!!!!!!

Pani-rosa [81]

Oil has very less density as compared to water, so they never mix through. When, you put both of them in a container, then Oil floats on the surface of water

Hope this helps!

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2 years ago

How many molecules are in 15.0 g of oxygen gas (O2)?

frosja888 [35]

Answer:

2.82*10^23

Explanation:

please see attached for work!

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2 years ago