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Olegator [25]
3 years ago
9

Holly wants to design a test to find out how fast her friend Jill can walk from one end of the playground to the other.

Chemistry
2 answers:
diamong [38]3 years ago
7 0
Answer: D

the answer can not be A because the type of shoes jill is wearing doesn’t have anything to do with her speed

The answer can not be B because dogs are not any part of this experiement

the answer can not be C because they are testing the speed of a person not a bike
Orlov [11]3 years ago
6 0

Answer:

D

Explanation:

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Homogeneous mixture that does not settle out upon standing reflect light is an element. solid. hydrated.
andrey2020 [161]
Homogeneous mixture that does not settle out upon standing but which will reflect light is called COLLOIDS.
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5 0
4 years ago
What parts are present in every chemical equation?
WITCHER [35]
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5 0
2 years ago
Which one of the following would have the largest dispersion forces?
Sergio039 [100]

Answer:

A) CH3CH2SH

Explanation:

Dispersion forces are weak attractions found between non-polar and polar molecules. The attractions here can be attributed to the fact that a  non-polar molecule sometimes become polar because the constant motion of its electrons may lead to an uneven charge distribution at an instant. If this happens, the molecule has a temporary dipole. This dipole can induce the neighbouring molecules to be distorted and form dipoles as well. The attractions between these dipoles constitute the Dispersion Forces.

Therefore; the greater the molar mass of a compound or molecule, the higher the Dispersion Force. This implies that the compound or molecule with the highest molar mass have the largest dispersion forces.

Now; for option (A)

CH3CH2SH

The molar mass is :

= (12 + (1 × 3 ) +12 + (1 ×2) + 32+1)

= (12 + 3+ 12 + 2 + 32 + 1)

= 62 g/mol

For option (B)

CH3NH2

The molar mass is:

= (12 + (1 ×  3 ) +14 + (1 ×  2)

= (12 + 3 + 14 + 2)

= 31 g/mol

For option (C)

CH4

The molar mass is :

= 12 + (1 × 4)

= 12 + 4

= 16 g/mol

For option (D)

CH3CH3

The molar mass is :

= 12 + ( 1 × 3 ) + 12 + ( 1 × 3)

= 12 + 3 + 12 + 3

= 30 g/mol

Thus ; option (A) has the highest molar mass, as such the largest dispersion force is A) CH3CH2SH

7 0
3 years ago
Solid potassium hydroxide koh decomposes into gaseous water and solid potassium oxide . write a balanced chemical equation for t
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<span>The chemical formula is pretty straightforward. 2KOH reacts to produce H2O and K2O. This is the balanced chemical reaction between: Solid potassium hydroxide koh decomposing into gaseous water and solid potassium.</span>
4 0
3 years ago
Which of these is an example of a chemical change?
goblinko [34]
C. Digesting a sandwich


Is your answer

Hope this helps
3 0
3 years ago
Read 2 more answers
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