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
NikAS [45]
3 years ago
7

How many neutrons does be-14 have?

Chemistry
2 answers:
Andreyy893 years ago
4 0
It has 8 neutrons in it
kirza4 [7]3 years ago
3 0

Answer:

14

Explanation:

same as the atomic number

You might be interested in
A student is determining the density of an unknown metal with a mass of 32.56 g. The student partially fills a graduated cylinde
xenn [34]

Answer:

The metal is Tin (Sn)

Explanation:

The following data were obtained from the question:

Mass of metal = 32.56 g

Volume of water = 14.78 mL

Volume of water + metal = 20.44 mL

Next, we shall determine the volume of the metal. This is illustrated below:

Volume of water = 14.78 mL

Volume of water + metal = 20.44 mL

Volume of metal =..?

Volume of metal = (Volume of water + metal) – (Volume of water )

Volume of metal = 20.44 – 14.78

Volume of metal = 5.66mL

Next, we shall determine the density of the metal.

Density of a substance is defined as the mass of the substance per unit volume of the substance. Mathematically, the density of a substance is expressed as:

Density = Mass / volume

With the above formula, we can obtain the density of the metal as follow:

Mass of metal = 32.56 g

Volume of metal = 5.66mL

Density =.?

Density = Mass /volume

Density = 32.56g/5.66mL

Density of the metal = 5.75g/mL

Comparing the density of the metal with standard density of elements, the metal is Tin (Sn)

4 0
3 years ago
Relate what you have learned about the word quantum to the Bohr model.​
ss7ja [257]
I forgot what quantum means to be honest, the Bohr model In atomic physics, the Bohr model or Rutherford–Bohr model, presented by Niels Bohr and Ernest Rutherford in 1913, is a system consisting of a small, dense nucleus surrounded by orbiting electrons—similar to the structure of the Solar System, but with attraction provided by electrostatic forces in place of gravity. After the cubical model (1902), the plum pudding model (1904), the Saturnian model (1904), and the Rutherford model (1911) came the Rutherford–Bohr model or just Bohr model for short (1913). The improvement over the 1911 Rutherford model mainly concerned the new quantum physical interpretation.
7 0
3 years ago
How many bacteria can fit into an animal cell
melisa1 [442]
The size of most eukaryotic animal cells range from 1 - 30 micrometers while the size of, let's say coccus bacteria is between 0.5 - 1.0 micrometers. So, if the largest animal cell is filled with the largest coccus bacteria, we can say that 30 bacteria can fit inside.
5 0
3 years ago
When a candle is cooling down is it a physical or chemical change
Ksivusya [100]
Physical

When something is cooling it isn’t changing it’s chemical composition so it’s physical
3 0
3 years ago
Read 2 more answers
Find the number of ibuprofen molecules in a tablet containing 200.0 mg of ibuprofen (c13h18o2). express the amount to four signi
Musya8 [376]

First let us calculate for the molar mass of ibuprofen:

Molar mass = 13 * 12 g/mol + 18 * 1 g/mol + 2 * 16 g/mol

Molar mass = 206 g/mol = 206 mg / mmol

 

Calculating for the number of moles:

moles = 200 mg / (206 mg / mmol)

moles = 0.971 mmol = 9.71 x 10^-4 moles

 

Using the Avogadros number, we calculate the number of molecules of ibuprofen:

Molecules = 9.71 x 10^-4 moles * (6.022 x 10^23 molecules / moles)

<span>Molecules = 5.85 x 10^20 molecules</span>

4 0
3 years ago
Read 2 more answers
Other questions:
  • How many neutrons do (k) potassium-39 and potassium-40 have, respectively?
    13·1 answer
  • Identify the reversible chemical reaction below. A. reactants=&gt;products B. Products &lt;=&gt; reactants C. products =&gt; rea
    7·1 answer
  • One international nautical mile is defined as exactly 6076.1155ft ,and a speed of 1 knot is defined as one international nautica
    8·1 answer
  • Calculate the molecular mass or formula mass in any of CH4 NO2 SO3 C6H6 Nal
    5·1 answer
  • Suppose you have an Avogadro's number of nitrogen atoms. How many grams does this represent? Enter your answer to one decimal pl
    12·1 answer
  • Need Some Quick Help, Please :)
    11·1 answer
  • What is the molality of a solution made by dissolving 137.9g of sucrose in 414.1g of water? The density of the solution is 1.104
    11·1 answer
  • Is "A finger got cut off" a inherited or acquired or both.
    11·2 answers
  • A certain atom has 11 electrons 8 neutrons and a charge of -1. What is it’s atomic mass
    7·1 answer
  • Match each of the following topical dosage forms with its correct definition.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!