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Talja [164]
4 years ago
11

Hess’s law is based on what principal?

Chemistry
2 answers:
Liono4ka [1.6K]4 years ago
8 0

makes is possible to calculate H for complicated chemical reactions

Vladimir79 [104]4 years ago
6 0
The first law of thermodynamics.
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For each of the following sublevels, give the n and l values and the number of orbitals: (a) 5s; (b) 3p; (c) 4f
OverLord2011 [107]

Answer:

(a) 5s. n = 5. Sublevel s, l = 0. Number of orbitals = 1

(b) 3p. n = 3. Sublevel p, l = 1. Number of orbitals = 3

(c) 4f. n =4. Sublevel f, l = 3. Number of orbitals = 7

Explanation:

The rules for electron quantum numbers are:

1. Shell number, 1 ≤ n

2. Sublevel number, 0 ≤ l ≤ n − 1

So,

(a) 5s. n = 5, shell number 5. Sublevel s, l = 0. Number of orbitals = 2l +1 = 1

(b) 3p. n = 3, shell number 3. Sublevel p, l = 1. Number of orbitals = 2l +1 = 3

(c) 4f. n =4, shell number 4. Sublevel f, l = 3. Number of orbitals =  2l +1 = 7

6 0
3 years ago
The reason an increase in substrate concentration does not increase the reaction rate indefinitely is because
scoundrel [369]

Answer:

Increasing substrate concentration also increases the rate of reaction to a certain point. Once all of the enzymes have bound, any substrate increase will have no effect on the rate of reaction, as the available enzymes will be saturated and working at their maximum rate.

3 0
3 years ago
ILL GIVE BRAINLIST............ have to answer all!!!!
7nadin3 [17]
1 is seconds and meters m/s

2 is seconds and meters m/s^2

3 Newton kg/m

4 Kilograms

Hope this helps!
6 0
3 years ago
Is granite rock a compound, element, mixture? Explain
Ghella [55]
It is a <u>mixture</u> of minerals mainly of corps that crystalizes of magma below earths surface.
7 0
3 years ago
What is the angle between the carbon-oxygen bond and one of the carbon-fluorine bonds in the carbonyl fluoride ( cof2 ) molecule
kozerog [31]
It has a trigonal planar structure. So, the calculated angle is 127.3 degrees.
You can see the structure in the picture.


5 0
4 years ago
Read 2 more answers
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