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
Mariana [72]
2 years ago
15

What is the correct Lewis dot structure of NH2

Chemistry
1 answer:
Mrac [35]2 years ago
4 0
B I believe. Hope this helps you!


-Belle
You might be interested in
If you breathe fast, CO2 is If you breathe fast, C O 2 is blank and the equilibrium shifts to blank [ H 3 O + ], which raises th
brilliants [131]

Answer:

If You Breathe Fast, CO2 Is Blank The Equilibrium Shifts To Blank [H3O+], Which Raises The PH.

Explanation:

3 0
2 years ago
A 35.6 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter, according to the following reaction. If the temperature ros
Oksana_A [137]
<h3>Answer:</h3>

A) -1.24 × 10^3 kJ/Mol

<h3>Explanation:</h3>

we are given;

Mass of ethanol, m = 35.6 g

Temperature change, Δt(35.0 to 76.0°C) = 41 °C

Specific heat capacity of the calorimeter, c = 23.3 kJ/°C

Molar mass of ethanol = 46.07 g/mol

We are required to the heat change of the reaction.

  • We need to note that the reaction is an exothermic reaction since there is an increase in temperature which means heat was lost to the surroundings.

Therefore; we are going to use the following steps;

<h3>Step 1 : Moles of ethanol </h3>

We know, Moles = Mass ÷ molar mass

Thus, moles of ethanol = 35.6 g ÷ 46.07 g/mol

                                      = 0.773 moles

<h3>Step 2: Enthalpy change or heat change for the reaction.</h3>

Heat change = -mcΔt

but we are given s[pecific heat capacity in Kj/°C and we require heat change in kJ/mol

Therefore;

Heat change = -(cΔt) ÷ n ( n is the number of moles)

                      = -( 23.3 kJ/°C × 41°C) ÷0.773 mol

                    = - 1.24 × 10^3 kJ/Mol

Therefore, values of ΔH of the reaction is -1.24 × 10^3 kJ/Mol

7 0
2 years ago
a substance is analyzed to have a percent composition of 74.186% sodium and 25.814% fluorine. calculate the empirical formula
Novosadov [1.4K]

Answer:

Na₂₆F₁₁

Explanation:

We find the moles of the substance assuming 100 g of the substance is present. Why do we take 100 g? Because then the percent of sodium/fluorine, would be the g of sodium/fluorine respectively:

74.186 g Sodium | 1 mol Sodium/23 g              =>       3.2255 mol Na    

25.814 g Fluorine | 1 mol Fluorine/19 g             =>       1.3586 mol F

Divide each by smallest number of moles:

3.2255/1.3586 = 2.37

1.3586/1.3586 = 1

Multiply by common number to get a smallest whole number:

2.37*11 = 26,

1*11 = 11

The empirical formula is Na₂₆F₁₁

5 0
2 years ago
The ester of chocolate and the test of chocolate ​
zepelin [54]

Answer:

I don't get the question

6 0
2 years ago
Who is like, crazy good with Chemistry because I have 2 questions that I am so freaking stuck on! PLEASE HELP!
Afina-wow [57]

Answer:

There are no questions here...

6 0
2 years ago
Other questions:
  • Isotopes are atoms with the SAME number of protons, but DIFFERENT numbers of neutrons. Question 8 options: True False
    9·1 answer
  • An archeologist finds a 1.62 kg goblet that she believes to be made of pure gold. She determines that the volume of the goblet i
    8·2 answers
  • How many grams of kbr are required to make 350. ml of a 0.115 m kbr solution? 3.04 g 4.79 g 40.3 g 0.338 g?
    11·2 answers
  • The graph of y = 3x2 + 12x + 11 is shown.
    8·1 answer
  • Taylor, a MIC 206 student needs to determine the OCD of a sample of Escherichia coli. She performed dilutions using four 9 ml di
    9·1 answer
  • 6 CO 2 + 12 H 2 O C 6 H 12 O 6 + 6 H 2 O + 6 O 2
    8·1 answer
  • What is solubility curves​
    5·1 answer
  • What separation technique would most likely be used if a solvent were
    12·2 answers
  • 3NO₂ + H₂O → 2HNO3 + NO 3NO₂ + H₂O → 2HNO3 + NO
    9·1 answer
  • If you mix cu2+ with? a. nacl, b. nano2, c. h2o , arrange the solutions based on their absorption from highest frequency to lowe
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!