2 years ago

Define exothermic reaction.

Chemistry

2 answers:

Maksim231197 [3]2 years ago

7 0

An exothermic reaction is a reaction that releases energy.

AleksandrR [38]2 years ago

4 0

_____________________________

A chemical reaction in which heat is released is called exothermic reaction.

For example

CaO(s) + H2O(l) --> Ca(OH)2 (aq) + Heat

As we know that if energy needed in the bond breaking in the reactants is less than the energy released when new bonds are formed resulting in the products, the chemical reaction is of exothermic in nature.

_____________________________

You might be interested in

How much of a 10 M solution is needed to make 1 liter of a 1 M solution

mylen [45]

Answer:

0.1 L

Explanation:

M₁ × V₁ = M₂ × V₂

10M × V₁ = 1M × 1L

V₁ = 0.1 L

I hope this helps :)

5 0

2 years ago

The precision of a method is being established, and the

Lemur [1.5K]

Answer:

No, 22.09% is not a valid measurement

Explanation:

Precision has to do with how close a given set of measured values are to each other. It is quite different from accuracy. Accuracy refers to how close a given set of values is to the true value. A given set of values may be precise but not accurate and vice versa.

If we look at the values obtained; 22.09%, 22.15%, 22.18%, 22.23%, 22.25%, the value 22.09% is too far off the other values. This implies that it does not represent a valid measurement since it is not close to all the other values obtained.

7 0

2 years ago

Briefly explain what happens to an organism during the process of petrification. Write your answer in the essay box

Aleksandr [31]

Answer:

YOU BETTER GIVE THEM BRAINLEIST ↑↑↑↑↑

Explanation:

4 0

2 years ago

A ray in the emission spectrum has a wavelength of 3.10 x 1014 meters. Given that the speed of light is 2.998 x 108 m/s, what is

bulgar [2K]

<span>0.967 x 10^-6 HZ

This should be correct (:</span>