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
Burka [1]
3 years ago
10

. An atom of nitrogen has an atomic

Chemistry
1 answer:
GrogVix [38]3 years ago
5 0

Here's the Answer !

Atomic number = no. of electrons = no. of protons, therefore :

  • no. of electrons = 7

  • no. of protons = 7

and mass number = no. of protons + no. of neutrons

so,

  • 7 + no. of neutrons = 14

  • no. of neutrons = 7
You might be interested in
To what category of elements does an element belong if it is a poor conductor of electricity
Crazy boy [7]
Nonmetals & Noble Gases
4 0
3 years ago
What is Kb for N2H4 if the pH of a 0.158M solution of N2H5Cl is 4.5?
olasank [31]

Answer:

Kb= 1.58 * 10^{-6}

Explanation:

The correct question is

What is Kb for N2H4 if the pH of a 0.158M solution of N2H5Cl is 4.5?

Solution-

N2H4Cl hydrolyses on addition of water

The reaction equation is as follows -

N2H4+ + H2O ----> N2H4 + H3O+

Ka = \frac{K_w}{K_b} = \frac{10^{-14}}{K_b}

pH = 4.5

[H+] = 10^{-pH} = 10^{-4.5}

K_b=  \frac{10^{-14} }{K_b} =  \frac{Y_2}{0.158}  \\K_b= \frac{(10^{-4.5})^2}{0.158}\\=> Kb = 0.158 * 10-14 /(10-4.5)2

 Kb= 1.58 * 10^{-6}

3 0
2 years ago
25. How is the information in an image sent through the digital signal system?
lawyer [7]
By binary codes or a whole image depending on the description of the image.
4 0
2 years ago
Read 2 more answers
Why do atoms exchange or share electrons during bonding
kondaur [170]

Answer:

Because it gives them a full valence shell.

Explanation:

5 0
2 years ago
Marcus measured the masses and volumes of samples of four different substances, and he calculated their densities. The table sho
Zina [86]

<u>Given:</u>

Calculated density values-

Aluminum = 2.7 g/cm3

Copper = 9.0 g/cm3

Iron = 7.9 g/cm3

Titanium = 4.8 g/cm3

Unknown sample mass = 9.5 g

Sample volume = 2.1 cm3

<u>To determine:</u>

The identity of the unknown sample

<u>Explanation:</u>

'Density' is a physical parameter which can be used to identify the nature of the unknown substance.

Density = Mass/Volume

For the unknown sample

Density = 9.5 g/2.1 cm3 = 4.52 g/cm3

This matches closely with the calculated density of titanium

Ans: The unknown substance is made of titanium

4 0
3 years ago
Other questions:
  • The boundary where two air masses meet is called a
    13·2 answers
  • Which salt solution is more concentrated, solution a, which contains 18g of salt in 6l of water, or solution b, which contains 2
    13·1 answer
  • A laboratory technician needs to prepare 500 milliliters of a 2 M solution of sodium hydroxide (NaOH) in a flask. The flask has
    8·1 answer
  • Carbon-14 emits beta radiation and decays with a half-life (t ) of 5730 years. Assume that you start with a mass of 6.00 × 10^–1
    6·2 answers
  • Reactions that absorb thermal energy are called blank reactions
    6·1 answer
  • Which answer choice correctly describes the difference between ionic and covalent bonds?
    8·1 answer
  • 0.007 decigrams = ? micrograms
    7·1 answer
  • All I need is the answer I don’t need any work shown, what is the pH= ?
    15·1 answer
  • Why are flowers brightly colored?
    10·1 answer
  • nter your answer in the provided box. Nitric acid (HNO3) is used in the production of fertilizer, dyes, drugs, and explosives. C
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!