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Novosadov [1.4K]
3 years ago
8

In order for a scientific theory to be developed, it is examined and re-examined through experiments and scientific argumentatio

n. This process makes the scientific theory
Chemistry
1 answer:
Shalnov [3]3 years ago
3 0
Answer : The scientific theory is considered to be the foundation of many science experiments because it has well supported theory related reproducible data of test table, experiments,etc. which are usually valid and is of great help in predicting reactions.

Also these scientific theories are considered to be robust, durable and can be changed as and when required; because of its flexibility in accepting a modification/change or addition to the previous theory. All of these reasons contribute to develop scientific theories into a stronger and longer durable one. 
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How many valence electrons would there be for the element with the<br> following orbital diagram?
Svetach [21]

Answer:

6

Explanation:

The p orbital needs 2 more electrons.

8 0
3 years ago
Calculate q (in units of joules) when 1.850 g of water is heated from 22 °C to 33 °C. Report only the numerical portion of your
Minchanka [31]
When q is the heat energy in joules (J)

so, according to this formula, we can get q (in joule unit):

q = M*C*ΔT

when M is the mass of the water sample = 1.85 g

C is the specific heat capacity of water = 4.18 J/g.°C

and Δ T is the difference in temperature (Tf-Ti) = 33 - 22 = 11°C

So, by substitution, we will get the value of q ( in Joule):

∴ q = 1.85 g * 4.18 J/g.°C * 11 °C

      = 85 J
5 0
3 years ago
The person who answerers this will get 100 points pls answer all the question's
zysi [14]

Answer:

I think that is the literal answer

5 0
2 years ago
Fe(NO3)2 not sure how to get the oxidation numbers of all elements
Shtirlitz [24]
You must remember that oxidation number of hydrogen in acids is always +1, oxidation number of oxygen in oxides & acids is always -2... metals has always oxidation number on plus!

group NO3 comes from HNO3...and oxidation number of whole acid group is always on minus and equal to the amount of hydrogen atoms in this acid... so oxidation number of NO3 = -1

we have 2 NO3 groups so 2*(-1) = -2 and that is the reason why oxidation number of Fe in this formula must be +2... because sum of all elements always gives 0!

Now we could count of oxidation number for nitrogen... we write HNO3 and start counting from right to left:
3*(-2) from oxygens + 1 from hydrogen = -5
so nitrogen must have +5 oxidation number... because sum all in formula must be 0.


4 0
3 years ago
Which alkane is the isomer of butane called 2-methylpropane? A skeletal model of a 4-carbon chain has a straight line extending
solmaris [256]

Answer:

A three-carbon chain has a straight line extending from the center carbon.

Explanation:

Isomers are compounds having the same molecular formula but different structural formulas.

Butane and 2-methylpropane are constitutional isomers. Constitutional isomers differ in the way that the constituent atoms are connected to each other.

Butane is a straight chain compound while the compound 2-methylpropane consists of a three-carbon chain which has a straight line extending from the center carbon.

8 0
2 years ago
Read 2 more answers
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