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3 years ago

If you pick up a cup of hot tea,in which direction is heat flowing?

2 answers:

7 0

Conduction is the movement of heat along a gradient within a solid. So the inner part of the teacup against the hot liquid will transfer that heat to the cooler outer part of the teacup (where it will be lost via thermal radiation). Convection is the movement of molecules of a liquid or gas within itself. So it’s up tell me if I’m wrong please

Mnenie [13.5K]3 years ago

6 0

The heat is flowing up.

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A student was performing a separation of a mixture of organic compounds. The final step of the process involved a filtration of

Ahat [919]

Answer:

1) No

2) The solvent contaminated the analyte

3) The solvent should be evaporated properly before washing and drying the analyte

Explanation:

During separation of organic compounds, solvents are used. These solvents are able to contaminate the analyte and lead to a large difference in melting point of solids obtained.

However, the error can be minimized by evaporating the solvent before washing, drying and melting point determination of the solid.

8 0

3 years ago

Inessa [10]

Answer:

methane + oxygen → carbon dioxide + water

Explanation:

methane + oxygen → carbon dioxide + water

5 0

3 years ago

Convert the following temperature to c 67k b) 1671k

kap26 [50]

Convert Kelvin to °c

(a) 67°c

Formula:-

k=°c+273

°c = 273 - k

°c = 273-67= 206 °c

(b) 1671 k

k=°c+273

°c = 273 - k

°c= 273-1671 = -1398°c

8 0

2 years ago

How many mono-; di- ; and trichloro derivatives are possible for cyclopentane?

Studentka2010 [4]

Mono - 1 Di- 2 Tri - 4

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3 years ago

Which formula represents 1,2-ethanediol?

Oliga [24]

Answer:

1) C2H4(OH)2

Explanation:

A 1,2-ethanediol has an ethane structure consisting of two Carbon atoms with a hydrogen from each carbon substituted by a hydroxyl group. This makes it a 1,2-diol.

8 0

2 years ago