Answer:
The three methods we can use to separate a mixture are:
1.sublimation
example: sand and camphor
2.centrifugation
example:cream from milk
3.evaporation
example:salt from sea water
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Force is Required to work
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Answer:
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Answer : The percent difference between the ideal and real gas is, 4.06 %.
Explanation : Given,
Ideal pressure (true value) = 49.3 atm
Real pressure (measured value) = 47.3 atm
The formula used to calculate percent difference is :
Percent difference = 
Percent difference = 
Percent difference = 4.06 %
Therefore, the percent difference between the ideal and real gas is, 4.06 %.
Answer:
a heterogeneous mixture,-two substances present; two phases present
a homogeneous mixture- two substances present; one phase present
a pure substance- one substance present- one phase present
no correct response-one substance present; two phases present
Explanation:
When two substances are mixed, the mixture may be homogenous or heterogeneous. If a mixture is homogenous, then the two substances form a single phase, e.g ethanol and water.
On the other hand, a heterogeneous mixture is divided into two distinct phases, e.g kerosene and water mixture.
A single substance can only give one phase, no substance can simultaneously give two phases of the same substance in the same physical state.
Similarly, a pure substance always consists of a single phase.
