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Nutka1998 [239]
3 years ago
9

What happens when two negatively charged ions get closer together?

Chemistry
2 answers:
ad-work [718]3 years ago
5 0

Answer:

They repel

Explanation:

Opposites attract like repels due to dipoles

WINSTONCH [101]3 years ago
3 0

Answer:

They repel each other

Explanation:

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The temperature in a town started out at 55 degrees. By the end of the day the temperature dropped to -6 degrees.
garik1379 [7]

Answer:

The choice of the answer is fourth option that is -61 degrees.

Therefore the temperature drop is -61°Centigrade.

Explanation:

Given:

The temperature in a town started out at 55 degrees

Start temperature = 55°Centigrade. (Initial temperature)

End of the Day      = -6°Centigrade. (Final temperature)

To Find:

How far did the temperature drop?

Solution:

We will have,

\textrm{Temperature drop}=\textrm{Final temperature}-\textrm{Initial temperature}

Substituting the above values in it we get

\textrm{Temperature drop}=-6-55\\\\\therefore \textrm{Temperature drop}=-61\° centigrade

Therefore the temperature drop is -61°Centigrade.

4 0
4 years ago
in dimesional analysis, if an electric vehicle gets 4 miles/ kWh and the utility company charges 12 cents per kWh for charging i
Ivanshal [37]

Answer:

The cost of driving this car is 33.33 miles per dollar.

Explanation:

Distance covered in 1 kilo watt-hour = 4 miles/kWh

Utility company charges  = 12 cents/kWh

The cost of driving this car in miles per cents:

\frac{ 4 miles/kWh}{12 cents/kWh}=\frac{1 miles}{3 cents}

1 cents = 0.01$

The cost of driving this car in miles per dollars:

\frac{1}{3} miles/cent=\frac{1 miles}{3\times 0.01\$}=33.33 miles/\$

3 0
3 years ago
Use the equations below to calculate the enthalpy of formation for propane gas, C3H8, from its elements, hydrogen gas and solid
IceJOKER [234]

Answer: I got -4542.9kg/mol

Explanation:

8 0
3 years ago
CaCl2 (picture) i don’t know how to do the problem
Vadim26 [7]

Answer:

Ca: 1

Cl: 2

Explanation:

Since there is no subscript but there is the element, its assumed that there is at least 1, otherwise it would'nt be there

8 0
4 years ago
Question 1: Would dissolving sugar into a cup of coffee be considered a physical or chemical change? Explain.
Kryger [21]

Answer:

chemical

Explanation:

becuase the sugar disolves into the coffe.

sorry if its wrong :)

7 0
3 years ago
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