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mezya [45]
4 years ago
8

What is the moden periodic law​

Chemistry
1 answer:
Zarrin [17]4 years ago
5 0

Answer:

Here's what I get  

Explanation:

The modern periodic law states that the physical and chemical properties of the elements are periodic functions of their atomic numbers.

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mestny [16]
I believe the answer is C
6 0
4 years ago
Read 2 more answers
5. The number of atoms in 9.2 g of Na will be: A. 6.2 x 1023 atoms B. 2.408 x 1023 atoms C. 9.2 x1023 atoms D. 23 atoms E. 9.2 a
cluponka [151]

Answer:

The answer is "Option B"

Explanation:

Formula:

Na atoms= Na atoms moles \times  NA

               = \frac{mass}{Na \ Molar\ mass} \times 6.022 \times 10^{23}\\\\= \frac{9.2}{23} \times 6.022 \times 10^{23}\\\\=0.2875 \times 6.022 \times 10^{23}\\\\=2.4 \times  10^{23}\ atoms \\\\

                                     

4 0
3 years ago
Suppose you are performing an extraction procedure with a carboxylic acid, like a benzoic or toluic acid Which layer should cont
wolverine [178]

Answer:

The correct answer is option A, that is, the organic layer.

Explanation:

One knows that non-polar solvent dissolves non-polar substances and the polar solvent dissolves polar substances, that is, like dissolved like. The toluic acid or benzoic acid refers to the carboxylic acids, which are non-polar or are very less polar in characteristics.  

Therefore, they possess the tendency to remain in the organic solvent, which is non-polar like diethyl ether. The toluic acid's or benzoic acid's non-polar characteristic is because of the existence of huge hydrophobic rings of benzene. Hence, the correct answer is option A, that is, the organic layer.  

7 0
4 years ago
Chemistry help please?
Leokris [45]
Fahrenheit to Celsius-> subtract 32 and multiply by .5556
Celsius to Fahrenheit-> multiply by 1.8 and add 32
6 0
3 years ago
Which statement describes the transfer of heat energy that occurs when an ice cube is added to an insulated container with 100 m
ICE Princess25 [194]
<span>The answer to this question would be: (3) The ice cube gains heat energy and the water loses heat energy.

Based on the law of conservation of energy, the energy in an isolated system should be constant. If something receives energy, other must be losing energy. The option 1 and 2  definitely false because the total energy is not constant.
In this case, the ice should have lower heat energy, so the ice should be the one who receives energy from the water</span>
4 0
3 years ago
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