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irakobra [83]
3 years ago
14

Pure sodium metal explodes when it makes contact with water, and chlorine, in its natural state, is a deadly, poisonous gas. Whe

n these two chemicals combine, they form a harmless, white powder known as sodium chloride or table salt. Which of the following statements does this information support? A. When substances are chemically combined, the properties of the new substances that are formed are often different from the properties of the original substances. B. Heat must be added in order to change the chemical properties of substances. C. When substances are chemically combined, the properties of the new substances that are formed are the same as the properties of the original substances. D. The properties of substances change during chemical reactions but then later go back to their original condition.
Chemistry
2 answers:
arlik [135]3 years ago
7 0
The answer is A because the information is stating that when one chemical combined with another chemical, it had new properties which is essentially answer choice A
Finger [1]3 years ago
3 0

Answer:   A.  When substances are chemically combined, the properties of the new substances that are formed are often different from the properties of the original substances.

Explanation:  when sodium metal combines with chlorine gas, it forms a crystalline compound known as Sodium Chloride . Thus a new compound has been formed and it can be observed that the physical properties of the newly formed compound is entirely different from the elemental states.

Thus when 2 or more entities are combined together via the process f aby chemical change or any chemical reaction, it would lead to the formation of the new compound that would have an entirely different segment of properties than the parent elements.

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Draw the structure of the compound C9H12 from its proton (1H) NMR spectrum below. First-order spin-spin splitting rules and equa
Vikki [24]

Answer:

Isopropylbenzene

Explanation:

If you draw the structure, you can see that there are two methyl groups and in between there.

Adjacent to CH3, there are four neighbouring hydrogens, therefore, n=4+1 = 5. The same is for methyl on other side. For carbon present in benzene ring,  there is 2, since there is one hydrogen on benzene per carbon.

4 0
3 years ago
Read 2 more answers
Which of the following electron configurations are written incorrectly?
Lynna [10]

Answer:

The electronic configuration that are incorrectly written is 1s²2s³2p⁶, 4s²3d¹⁰4p⁷, 3s¹ and 2s²2p⁴.

Explanation:

The electronic configuration of the elements corresponds to how all the electrons of an element are arranged in energy levels and sub-levels.

There are 7 energy levels —from 1 to 7— whose sublevels are described as s, p, d and f.

All electronic configurations begin with the term "1s" —corresponding to the sublevel s of level 1— so 4s²3d¹⁰4p⁷, 3s¹ and 2s²2p⁴ are incorrectly written. In addition, 4s²3d¹⁰4p⁷ is written incorrectly because is impossible to jump from the sublevel "s" to the sublevel "d" —which is found from level 3 and up— without passing through the sublevel "p".

In the case of 1s²2s³2p⁶, the wrong thing is that the sublevel "s" can only hold two electrons, not three.

The other options are correctly written.

3 0
3 years ago
Can anyone help me with this?
Scrat [10]

Explanation:

c2H5

|

cH3 _ c _ c H2 _ c H3

|

c2H5

cH3

|

cH3_ cH _ cH_ cH2_ cH3

|

cH3

5 0
2 years ago
What is Ionization Energy?
NARA [144]

Answer:

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Explanation:

4 0
3 years ago
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Write empirical formula
andrew11 [14]

Answer:

Pb(ClO_{3})_{4}\\Pb(MnO_{4})_{4}\\Fe(ClO_{3})_{3}\\\Fe(MnO_{4})_{3}\\

Explanation:

Pb^{4+}(ClO_{3}^{-})_{4}--->Pb(ClO_{3})_{4}\\Pb^{4+}(MnO_{4}^{-})_{4}--->Pb(MnO_{4})_{4}\\Fe^{3+}(ClO_{3}^{-})_{3}--->Fe(ClO_{3})_{3}\\\Fe^{3+}(MnO_{4}^{-})_{3}--->Fe(MnO_{4})_{3}\\

3 0
3 years ago
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