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
Leona [35]
3 years ago
8

An atom of 118Xe contains___ neutrons?A) 118 B) 54 C) 64 D) 172 E) 110​

Chemistry
1 answer:
aleksandrvk [35]3 years ago
4 0

Answer:

                      An atom of ¹¹⁸Xe contains 64 neutrons.

Explanation:

Number of Protons:

            The number of protons present in any atom are equal to the atomic number of that particular atom. Hence, as the atomic number of Xenon is 54 therefore, it contains 54 protons.

Number Neutrons:

            The number of neutrons present in atom are calculated as,

                              # of Neutrons  =  Atomic Mass - # of protons

As given,

                               Atomic Mass  =  118

                               # of Protons  =  54

So,

                               # of Neutrons  =  118 - 54

                               # of Neutrons  =  64

You might be interested in
A __ is a continuous range of a single feature such as wavelength
Gwar [14]
Hey there! 

The correct answer to your question is: Spectrum
 
A spectrum, by definition, is a range of colors which are produced by separating certain colors of light. 

Thank you! 
6 0
3 years ago
For the reaction: 3 H2(g) + N2(g) <--> 2 NH3(g), the concentrations at equilbrium were [H2] = 0.10 M, [N2] = 0.10 M, and [
masya89 [10]

The equilibrium constant, k of the reaction in which case, the concentrations of the given reactants and products are as indicated is; Choice A; K = 3.1 x 10⁵

<h3>What is the equilibrium constant , k of the reaction as described in the task content?</h3>

It follows from above that the concentrations of the reactants and products are as follows; [H2] = 0.10 M, [N2] = 0.10 M, and [NH3] = 5.6 M at equilibrium.

Hence, the equilibrium constant of the reaction in discuss is;

K = [5.6]²/[0.10]³[0.10]

k = 5.6² × 10⁴

k = 3.136 × 10⁵

K = 3.1 × 10⁵.

Read more on equilibrium constant;

brainly.com/question/1619133

#SPJ1

5 0
2 years ago
How many independent variables are allowed in an experiment
Dmitriy789 [7]

one independent variable

8 0
2 years ago
Read 2 more answers
Which statement is true of a chemical change?
Andru [333]
The appropriate answer is a. it involves a change in the molecular structure of the substance. A change in phase or state is referred to as a physical change. For example...liquid water freezing is a physical change because the state changes but solid water is still H20. Separating water into its constituent atoms, hydrogen and oxygen is a chemical change because the molecular structure of water is now non existent.
5 0
3 years ago
Read 2 more answers
How many moles of methane (CH4) is<br> 6.70 x 1022 atoms of methane?
suter [353]

Answer:

0.1113  mol

Explanation:

Data Given:

no. of atoms of CH₄= 6.70 x 10²² atoms

no. of moles of methane (CH₄) = ?

Solution:

we will find no. of moles of methane (CH₄)

Formula used

          no. of moles = no. of atoms / Avogadro's number

Where

Avogadro's number = 6.022 x 10²³

Put values in above equation

         no. of moles = 6.70 x 10²² atoms / 6.022 x 10²³ (atoms/mol)

         no. of moles = 0.1113  mol

So,

There are 0.1113 moles of methane.

8 0
3 years ago
Other questions:
  • What is the pH of a solution that contains 0.83M HCN (Ka = 4.9x10-10) and 0.64 M potassium cyanide?
    8·1 answer
  • What is the name of the visible surface of the Sun? (And surface doesn’t imply solid, as this surface’s density is 6000 times lo
    10·1 answer
  • why is it easier for water to flow through rock and sediment with larger pores than through rock and sediment with smaller pores
    9·2 answers
  • How have humans contributed to an increase in carbon dioxide levels in the past 100 years?
    5·1 answer
  • Certain metals react with acids to form hydrogen and salts of that metal. When sulfuric acid and aluminum combine, hydrogen gas
    6·1 answer
  • Investigation: Cells are the basic unit of life.
    9·2 answers
  • 11. Is this compound an acid or a base: H20?<br> both<br> base<br> neutral<br> acid
    6·2 answers
  • Pls help!!!!
    10·1 answer
  • 50 J of work was done on a system, as a result of which 29 J of heat energy was removed from it. How would this affect the inter
    13·2 answers
  • Does a negative ΔH mean that the heat should be treated as a reactant or as a product?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!