1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
EastWind [94]
3 years ago
10

Which is the correct Lewis dot structure of NH2? A. A B. B C. C D. D E. E

Chemistry
2 answers:
AleksAgata [21]3 years ago
8 0

Answer:

A

Explanation:

Serggg [28]3 years ago
5 0

Answer:

please I think the answer is A.

please show appreciation if it helps

and sorry if it doesn't help.

You might be interested in
What volumes of 0.200 M HCOOH and 2.00 M NaOH would make 500. mL of a buffer with the same pH as one made from 475 mL of 0.200 M
Fed [463]

<u>36 ml of NaOh and</u><u> 464 ml</u><u> of </u><u>HCOOH</u><u> would be enough to form 500 ml of a buffer with the same pH as the buffer made with </u><u>benzoic acid </u><u>and NaOH.</u>

What is benzoic acid found in?

  • Some natural sources of benzoic acid include: ​Fruits:​ Apricots, prunes, berries, cranberries, peaches, kiwi, bananas, watermelon, pineapple, oranges.
  • ​Spices:​ Cinnamon, cloves, allspice, cayenne pepper, mustard seeds, thyme, turmeric, coriander.

Calculate the amount of moles in NaOH and benzoic acid. This calculation is done by multiplying molarity by volume.

Amount of moles of NaOH -2 × 0.025 =  0.05 mol

Amount of moles of benzoic acid 2 × 0.475 = 0.095 mol

In this case, we can calculate the pH produced by the buffer of these two reagents, as follows

pH = pKa + log\frac{base}{acid}

4.2 + log\frac{0.05}{0.045} = 4.245

We must repeat this calculation, with the values shown for HCOOH and NaOH. In this case, we can calculate as follows

pH = pKa + log\frac{base}{acid}

4.245 = 3.75 + log\frac{base}{acid}

log\frac{base}{acid} = 0.5

\frac{base}{acid} = 3.162

Now we must solve the equation above. This will be done using the following values

\frac{2(0.5 - x)}{0.2x - 2(0.5 - x)} = 0.464 L

With these values, we can calculate the volumes of NaOH and HCOOH needed to make the buffer.

NaOH volume

( 0.5 - 0.464)L

0.036L .................... 36ml

HCOOH volume

500 - 36 = 464mL

Learn more about benzoic acid

brainly.com/question/24052816

#SPJ4

3 0
1 year ago
How many moles in 843.211 grams of c6h12o6?
leonid [27]
Molar mass C6H12O6 = 12 x 6 + 1 x 12 + 16 x 6 = 180 g/mol

1 mole ------------ 180 g
( moles ) --------- 843.211 g

moles = 843.211 x 1 / 180

moles = 843.211 / 180

= 4,684 moles of C6H12O6
3 0
3 years ago
Ethyl acetate can be prepared by an SN2 reaction. Draw the alkylbromide and nucleophile used in the reaction. Remember to includ
bulgar [2K]

Answer:

Few important points related to S_N2 reaction:

1. S_N2 is a one-step reaction that follows second order kinetics.

2. In S_N2 reaction, a transition state is formed in situ.

3. Strong nucleophiles like OH^- \ or\  CN^- are used in case of bi-molecular nucleophilic substitution reaction.

Ethyl acetate can be prepared by a second-order nucleophilic substitution reaction between acetic acid and ethyl bromide.  

The reaction between acetic acid and ethyl bromide is drawn below:

8 0
3 years ago
Read 2 more answers
Chemical energy sources are often portable and provide large amounts of energy. Fossil fuels are one kind of chemical energy sou
MrMuchimi
I’m not really sure sorry
4 0
3 years ago
Which chemical group is most likely to be responsible for an organic molecule behaving as a base
Ksju [112]

Answer:

The answer to your question is -NH₂ (amino group)

Explanation:

Organic bases are proton acceptors and they most of the times have nitrogen in their structure.

Organic bases have nitrogen in their structure.

Example of bases:

Alkanamines

Imidazole

Guanidine

Pyridine

Hydroxides (they do not have nitrogen but, are organic bases=

7 0
3 years ago
Other questions:
  • What does conserving mass mean in a chemical equation?
    13·2 answers
  • Which option is an example of a chemical property? Question options: reactivity color melting point density
    15·2 answers
  • A 0.800 g sample of cuso4 (s was placed in calorimeter with 43.0g of water at an initial temp of 18.3 degrees celcious. as the c
    10·1 answer
  • Tommy was walking at a rate of 4
    12·1 answer
  • I'm looking at the barometer in my lab as I type this question. It says the pressure is 968 torr. What is this pressure expresse
    6·1 answer
  • Pls i need this for finals and fast
    5·1 answer
  • What is polarization??​
    8·2 answers
  • Bromine pentachloride formula
    11·1 answer
  • What is the frequency of light that has an energy of 3.98 x 10-18 J
    9·1 answer
  • Any liquid or material that is likely to catch fire should be kept away from a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!