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Zinaida [17]
3 years ago
6

Which excerpt below includes a metaphor? a It is the top floor of a warehouse and an office building in Amsterdam, Holland. b Th

e sharply peaked roof of the building is outlined against a sea of other rooftops stretching way into the distance. c Nearby is the belfry of a church tower, the Westertoren, whose carillon rings out the hours. d Occasionally faint sounds float up from below.
Chemistry
1 answer:
Arada [10]3 years ago
8 0

Answer:

b. The sharply peaked roof of the building is outlined against a sea of other rooftops stretching way into the distance.

Explanation:

A metaphor may be defined as that figure of speech which is used to describe the action or an object in such a way that it is not literally true. A metaphor is only used to make a comparison or explain the idea.

In the context, the metaphor is the sea. In the sentence the boundary of the peaked roof of the building is being stretched with the others rooftops which has been compared to the sea of rooftop as there are a large number of  rooftops that are stretching in the way.

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An ionic bond is a bond between ____.
exis [7]

An ionic bond is a bond which occurs when there is a difference in the electronegativity of the atoms. One atom which has a stronger electronegativity tends to steal the electron of the other less electronegative atom hence making it more negative (anion), while the other becomes a cation. So answer is:

<span>b. a cation and an anion</span>

4 0
3 years ago
Read 2 more answers
What will most likely happen when a component is removed from a reaction system at equilibrium?
Sever21 [200]

Answer:

it's C

Explanation:

the equilibrium sytem will shift to remove more of what was removed

8 0
3 years ago
A solution has a pH = 4.63. What is the [H3O+] concentration?
LUCKY_DIMON [66]

Explanation:

The pH of a solution can you be found by using the formula

pH = - log [ { H_3O}^{+}]

Since we are finding the [H3O+] , substitute the value of the pH and find it's antilog

We have

4.63 =  -  log[ { H_3O}^{+}] \\ [ { H_3O}^{+}]   =  {10}^{ - 4.63}  \\   \\  = 2.344 \times  {10}^{ - 5} mol {dm}^{ - 3}

Hope this helps you

7 0
3 years ago
A plant extract can be obtained with organic solvents such as acetone or ethyl alcohol, and is composed of plant pigments such a
prohojiy [21]

Answer:

Here's what I get  

Explanation:

A plant extract is a mixture because it contains different substances: acetone or ethanol, chlorophylls A and B, carotene and xanthophylls.

It is homogeneous because it is a solution. There is only one phase: the liquid phase. You cannot see the pigments as separate phases.

You can separate the pigments by paper, thin layer, or column chromatography.

Many schools use paper chromatography, because paper is cheap.

As the mixture of pigments follows the solvent up the paper, they separate into different coloured bands according to their attractive forces to the cellulose in the paper.

The chlorophylls are strongly attracted to the paper, so they don't travel very far.

The nonpolar carotene molecules have little attraction to the polar cellulose, so they are carried along by the solvent front.

8 0
4 years ago
A gaseous fuel mixture stored at 747 mmHg and 298 K contains only methane (CH4) and propane (C3H8). When 11.1 L of this fuel mix
Alisiya [41]

Answer:

M_f=38.8\%

Explanation:

From the question we are told that:

Pressure P=747mmHg

Temperature T=298K

Volume V=11.1

Heat Produced Q=780kJ

Generally the equation for ideal gas is mathematically given by

 PV=nRT

 n= (747/760) *11.1/ (0.0821*298)

 n=0.446mol

Therefore

 x+y=0.446

 x=0.446-y .....1

Since

Heat of combustion of Methane=889 kJ/mol

Heat of combustion of Propane=2220 kJ/mol

Therefore

 x(889) + y(2220) = 760 ...... 2

Comparing Equation 1 and 2 and solving simultaneously

 x=0.446-y .....1

 x(889) + y(2220) = 760 ...... 2

 x=0.173

 y=0.273

Therefore

Mole fraction 0f Methane is mathematically given as

 M_f=\frac{x}{n}*100\%

 M_f=\frac{1.173}{0.446}*100\%

 M_f=38.8\%

7 0
3 years ago
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