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
natali 33 [55]
3 years ago
14

How many

Chemistry
1 answer:
MatroZZZ [7]3 years ago
5 0

Answer:

8 neutrons

A is the number of neutrons plus protons in the nucleus. However, we already know that there are 7 protons. Therefore, there must be 8 neutrons in the nucleus to add up to 15. Table 3.

Element Symbol Number of Neutrons

carbon 146C 8

nitrogen 147N 7

157N 8

oxygen 168O 8

Explanation:

You might be interested in
Find the partial pressure of helium gas in mmHg
mezya [45]

Answer:

214 mmhg

Explanation:

5 0
2 years ago
Does anyone know how to do this???
Bond [772]
Simply look at the periodic table and fill in what you know based on the table

The number of protons = atomic number
The number of electrons, Which is the same as the atomic number for atoms.

The number of valence electrons that is given by the group that the element is in, the top number of each column in the periodic table.







8 0
3 years ago
For the reaction
azamat

Answer:

Mass = 5.56 g

Explanation:

Given data:

Mass of Cl₂ = 4.45 g

Mass of NaCl produced = ?

Solution:

Chemical equation:

2Cl₂ + 4NaOH     →   3NaCl + NaClO₂ + 2H₂O

Number of moles of Cl₂:

Number of moles = mass/molar mass

Number of moles = 4.45 g/ 71 g/mol

Number of moles = 0.063 mol

Now we will compare the moles of Cl₂ with NaCl.

                  Cl₂         :         NaCl

                    2          :          3

                 0.063      :        3/2×0.063 =0.095 mol

Mass of NaCl:

Mass = number of moles × molar mass

Mass = 0.095 mol × 58.5 g/mol

Mass = 5.56 g

7 0
2 years ago
Will mark as Brainliest.
victus00 [196]
The answer is boiling liquids I think
4 0
3 years ago
Read 2 more answers
Which of these would be directly related to the science of ecology?
Leviafan [203]
The answer is D:  studying how the mayfly population affects the number of trout in a stream <span> As the science of ecology studies interactions between individual organisms and their environments.</span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • A student wants to make a 5.00%solution of rubidium chloride using 0.377g of the substance. what mass of water will be needed to
    8·1 answer
  • Which type of graph most clearly shows how a part or percentage relates to a whole
    10·1 answer
  • What 2 molecules make up sucrose?
    6·2 answers
  • Dwayne has a green mineral. It most likely contains
    5·2 answers
  • A major component of gasoline is octane C8H18. When liquid octane is burned in air it reacts with oxygen O2 gas to produce carbo
    15·1 answer
  • What is an example of tipping point?
    8·2 answers
  • Methanol and ethanol are said to be miscible in one another. What does this tell you?
    10·1 answer
  • If an unknown solution has a pH of 9, what is that solution classified as?
    9·2 answers
  • In the diagram of a transverse wave shown, what does P represent?
    10·2 answers
  • Can you dissolve. 35 moles of potassium permanganate (kmno4) into 500 ml of water? _________ why? / why not?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!