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Bess [88]
3 years ago
7

If a decrease in temperature accompanies a reaction, what occurred?

Chemistry
2 answers:
Setler [38]3 years ago
6 0

Answer:

The correct answer is: D. Energy was absorbed.

Explanation:

I took the test and this was the correct answer.

Sliva [168]3 years ago
3 0

Answer:

Energy was released

Explanation:

Decrease in temperature means less energy, but the energy had to have been transferred because energy can't be destroyed or created. So if the temp. went down, energy must have been lost. (If it had been absorbed, the temp. would have gone up)

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Which type of bonding is characterized by overlapping orbitals that allow outer electrons of atoms to move about freely througho
Sonja [21]

Answer:

D metallic

Explanation:

The chemical bonding which rises from electrostatic attractive force between the conduction electrons and the positively charged metal ions is called metallic bonding.

<u>It is sharing of the free electrons among the structure of the positively charged ions which are known as cations. </u>

<u>In this type of bonding, these free electrons freely move in the crystal mattice of the metal.  </u>

The bonding accounts for properties of metals, such as ductility, strength,  electrical and thermal conductivity and resistivity and luster.

6 0
3 years ago
What is the molarity of the solution with a volume of 23.47 Liters and 14.968 moles?
MrMuchimi

Answer:

0.6378 M

Explanation:

Molarity is defined by Moles per liter.

Plugging the given information in, we get (14.968 moles)/(23.47 L) which comes out to be about 0.6378 M

3 0
3 years ago
Draw a schematic diagram with a battery, connecting wires, a light bulb, and an ammeter in a series circuit.
Mila [183]

Answer:

here it is

....................................................................................................................................

3 0
3 years ago
4. Which class of matter is the least evenly
lys-0071 [83]

Answer:

Pure iron sulfide is homogeneous (uniform in appearance and properties), shows constant composition (a consistent ratio of iron to sulfur throughout any sample of it, large or small), consists of molecules all of one type, is no longer separable into two separate substances without another chemical reaction, and is .

Explanation:

Mixtures in two or more phases are heterogeneous mixtures. ... The exception would be solutions that contain another phase of matter. For example, you can make a homogeneous solution of sugar and water, but if there are crystals in the solution, it becomes a heterogeneous mixture.

8 0
3 years ago
Would you expect two electrons to attract or repel each other?
Fittoniya [83]
Repel because opposites only attract
8 0
3 years ago
Read 2 more answers
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