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Helga [31]
3 years ago
7

In an endothermic reaction what is true of the enthalpy

Chemistry
1 answer:
charle [14.2K]3 years ago
4 0

Answer is: a) is has increased.

There are two types of reaction:  

1) endothermic reaction (chemical reaction that absorbs more energy than it releases).

For example, the breakdown of ozone is an endothermic process. Ozone has lower energy than molecular oxygen (O₂) and oxygen atom, so ozone need energy to break bond between oxygen atoms.

2) exothermic reaction (chemical reaction that releases more energy than it absorbs).  

For example, ΔH(reaction) = -225 kJ/mol; this is exothermic reaction.

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HELP
tatiyna

Answer:

Bi (Bismuth)

Ag (Silver)

Li (Lithium)

Explanation:

Xe (Xenon) and I (Iodine) are non-metals. They cannot from a metallic bond because metallic bonds are bonds between metals only.

7 0
2 years ago
The density of ethanol is 0.789 g/mL. Calculate the volume of 600 g of ethanol.
Anettt [7]

Answer:

The answer is

<h2>760.46 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}  \\

From the question

mass of ethanol = 600 g

density = 0.789 g/mL

It's volume is

volume =  \frac{600}{0.789}  \\  = 760.4562737...

We have the final answer as

<h3>760.46 mL</h3>

Hope this helps you

6 0
3 years ago
Which of these elements does not exist as a diatomic molecule?
madam [21]

Answer:

Ne

Explanation:

Noble gas, Unreactive therefore does not exist as a diatomic molecule

3 0
3 years ago
An ionic bond involves _____.A. an attraction between ions of opposite chargeB. water avoidanceC. the sharing of a single pair o
allochka39001 [22]

Answer: D i think

Explanation: Im sorry if it is wrong lol!! I pretty sure thats the answer...

8 0
3 years ago
In what part of the atom do alpha or beta particles originate?
PolarNik [594]

Answer:

Nucleus

Explanation:

they originate in the nucleus

7 0
3 years ago
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