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zalisa [80]
3 years ago
5

A chemical change occurs when substances chemically react with one another. true or false

Chemistry
1 answer:
Simora [160]3 years ago
7 0
The answer to this is true im like 90 percent sure
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Which nitrogen base sequence is the partner of C-A-T-C-G-A?
marysya [2.9K]

Answer:

The answer should be B. G-T-A-G-C-T

A pairs with T and G pairs with C.

6 0
3 years ago
Read 2 more answers
I'll give 50 pts and brainliest
e-lub [12.9K]

Answer:

Response is below

Explanation:

The different types of mining are underground, surface, placer, and in-situ. Underground mining uses various materials to excavate resources from beneath the surface of the Earth. Surface mining is a category of mining that in which soil and rock overlying the mineral deposit are removed. Placer mining is the mining of stream bed deposits for minerals. In-situ mining is a mining process used to recover minerals such as copper and uranium through boreholes drilled into a deposit.

3 0
3 years ago
Just need help with these 3
SVEN [57.7K]
B
A
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I’m not sure if the second one is correct but Ik it a or b but I think it’s a
5 0
3 years ago
Is there an N−Cl bond in solid ammonium chloride?
Tems11 [23]
When ammonia is reacted with HCl it abstracts proton from acid and forms Ammonium Ion and Chloride Ion.

                              NH₃  +  HCl   →   ⁺NH₄  + Cl⁻ (simply Written NH₄Cl)
Structure,
              The structure of Ammonium Chloride is among those structures which contains all three types of bonding's, i.e.
                                  
                                                Ionic Bond

                                                Covalent Bond

                                                Coordinate Covalent Bond

Three Hydrogen atoms previously bonded with Nitrogen are covalent in nature. The new incoming proton from HCl forms co-ordinate covalent bond with Nitrogen and Chloride Ion containing negative charge make Ionic Bond with the positive Ammonium Ion. In question, if the line between Nitrogen and Chlorine atom is assumed covalent then it is incorrect. Structure is shown below,

5 0
3 years ago
what major organic product would you expect to obtain when acetic anhydride reacts with ch3ch2ch2oh nh3
solong [7]

The major product of the reaction between  acetic anhydride and CH3CH2CH2OH is CH3COOCH2CH2CH3. While, the major product of the reaction between acetic anhydride and NH3 is CH3CONH2.

<h3>What is acetic anhydride?</h3>

Acetic anhydride is the compound (CH3COO)2. It is a precursor for the synthesis of many organic compounds.

Now let us consider the use of acetic anhydride in synthesis. The major product of the reaction between  acetic anhydride and CH3CH2CH2OH is CH3COOCH2CH2CH3. While, the major product of the reaction between acetic anhydride and NH3 is CH3CONH2.

Learn more about  acetic anhydride: brainly.com/question/14356798

7 0
2 years ago
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