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Vikentia [17]
4 years ago
13

All elements in a period have the same energy level due to which of the following reasons?

Chemistry
2 answers:
Hitman42 [59]4 years ago
3 0
The answer is D. Any element in the same period have the same number of electron shells.

For example, elements like Mg, Al and Na are all in period 3 and therefore they all have 3 electron shells.
viktelen [127]4 years ago
3 0

Answer:

the answer is d

Explanation:

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3. Burns from boiling water can be severe, caused by the transfer of energy from the boiling water to the
Free_Kalibri [48]

Answer:

Q = 3937.56  J

Explanation:

Heat transferred due to change in temperature is given by :

Q=mc\Delta T

c is the specific heat of water, c=4.18 J/g-°C

We have, m = 15 g, T_i=100^{\circ} C\ \text{and}\ T_f=37.2^{\circ} C

So,

Q=15\times 4.18\times (37.2-100)\\Q=-3937.56\ J

Hence, 3937.56  J of heat is transferred.

8 0
4 years ago
A chemist wants to observe the following reaction:
stiv31 [10]

It take more energy to break the bonds of the reactants and less energy is given off when the product bonds are formed.

<h3>What is Energy?</h3>

Energy is defined as the ability to do work. Work is done in the breaking or formation of bonds.

The standard Enthalpy (ΔH) of water which was formed in the given reaction is negative.

ΔH= Δproduct - Δreactant

This means that the energy to break the bonds of the reactants is more.

Read more about Enthalpy here brainly.com/question/14291557

3 0
2 years ago
8.7 Two products are formed in the following reaction in a 50:50 mixture. Would the resulting solution be optically active
k0ka [10]

Answer:

Yes. The solution would be optically active.

Explanation:

Diastereomer are defined as the image that is non mirror and non -identical. It is made up of two stereoisomers. They are formed when the two stereoisomers or more than two stereoisomers of the compound have the same configuration at the equivalent stereocenters.

In the given context, as the product given is a diastereomeric mixture, the product would have an optical activity in total.

So the answer is Yes.

4 0
3 years ago
Describe three signs that a chemical reaction has taken place and give an example of each sign
il63 [147K]
Color change, temperature change, bubbling, state change

green to blue, hot to cold, bubbles (lol), and liquid to gas
7 0
3 years ago
What would be the most likely explanation if none of the tested paint samples had turned brown?
mariarad [96]

Answer:4/d

Explanation:

i did this before

7 0
3 years ago
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