4 years ago

Which best describes the function of a centrifuge?

2 answers:

8 0

The correct answer is the last statement. Centrifugation is to separate the undissolved particles of a mixture into layers. It separates a homogeneous mixture by spinning it at high speeds. The precipitate settles at the bottom while the solution is clear.

prohojiy [21]4 years ago

6 0

The correct answer is the last answer choice

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4 years ago

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2 years ago

(12pts) Separation of Copper(II) and Bismuth(III) Ions Procedure Number and Ion Test Reagent or Technique Evidence of Chemical C

anastassius [24]

Answer:

attached below

Explanation:

write the chemical equations for the test and confirmation test

i.e.

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ii)Chemical equation for copper confirmation test

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iv) Chemical equation for bismuth confirmation test

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3 years ago

3. How many grams of aluminum can be heated from 90°C to 120°C if 500 J of heat energy are applied?

IgorLugansk [536]

We are given:

Initial Temperature = 90°c

Final Temperature = 120°c

Heat applied(ΔH) = 500 Joules

Specific heat(c) = 0.9 Joules / g°C

Mass of Aluminium(m) = ?

Change in temperature:

ΔT = Final temp. - Inital Temp.

ΔT = 120 - 90

ΔT = 30°c

Calculating the mass:

We know the formula:

ΔH = mcΔT

replacing the values:

500 = m(0.9)(30)

500 = m(27)

m = 500/27

m = 18.52 grams

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3 years ago