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
Ugo [173]
3 years ago
11

What the total number of neutrons in a atom of 0-18?

Chemistry
1 answer:
Allushta [10]3 years ago
5 0
The answer is: 10
I could be wrong
You might be interested in
The frequency factors for these two reactions are very close to each other in value. Assuming that they are the same, compute th
MrRissso [65]

The question is incomplete, complete question is :

The frequency factors for these two reactions are very close to each other in value. Assuming that they are the same, compute the ratio of the reaction rate constants for these two reactions at 25°C.

\frac{K_1}{K_2}=?

Activation energy of the reaction 1 ,Ea_1 = 14.0 kJ/mol

Activation energy of the reaction 2,Ea_1  = 11.9 kJ/mol

Answer:

0.4284 is the ratio of the rate constants.

Explanation:

According to the Arrhenius equation,

K=A\times e^{\frac{-Ea}{RT}}

The expression used with catalyst and without catalyst is,

\frac{K_2}{K_1}=\frac{A\times e^{\frac{-Ea_2}{RT}}}{A\times e^{\frac{-Ea_1}{RT}}}

\frac{K_2}{K_1}=e^{\frac{Ea_1-Ea_2}{RT}}

where,

K_2 = rate constant reaction -1

K_1 = rate constant reaction -2

Activation energy of the reaction 1 ,Ea_1 = 14.0 kJ/mol = 14,000 J

Activation energy of the reaction 2,Ea_1  = 11.9 kJ/mol = 11,900 J

R = gas constant = 8.314 J/ mol K

T = temperature = 25^oC=273+25=298 K

Now put all the given values in this formula, we get

\frac{K_1}{K_2}=e^{\frac{11,900- 14,000Jl}{8.314 J/mol K\times 298 K}}=2.3340

0.4284 is the ratio of the rate constants.

7 0
3 years ago
The molecule shown belongs to which class of compounds
Kaylis [27]
The answer is (4) amino acid. This molecule has one carboxyl and one amidogen linked at the same carbon atom. This is the property of amino acid. So this is an amino acid.
7 0
3 years ago
James has three cubes with identical dimensions. He places the blocks in water, as shown below.
Fantom [35]

Answer:I think it could be A or B but I would choose A.

Explanation:

3 0
3 years ago
What is the charge of a magnesium ion?
kupik [55]

2+ charge electrons of course


7 0
3 years ago
Read 2 more answers
I need help with this question!!
s2008m [1.1K]

Answer:

Fossil fuels..........

3 0
3 years ago
Other questions:
  • Which statement accurately compares the trends in atomic number and atomic mass in the periodic table?
    10·2 answers
  • The sum of the oxidation numbers of all atoms in a neutral compound is
    10·2 answers
  • What is the instantaneous rate of formation of product C given the following information: a. Stoichiometric equation A+ B2C+ D b
    7·1 answer
  • What does the formula 2n2 represent?
    7·1 answer
  • Explain how creativity can play a role in the construction of scientific questions and hypotheses.
    6·1 answer
  • When was the "Permian Era"?
    9·2 answers
  • Help please! I’ll mark brainliest to who ever answers this first!!
    7·1 answer
  • PLEASE HELP ME ASAP THIS IS DUE IN 10 MINUTES AND I AM STUCK!!
    15·2 answers
  • Lie on a bed?<br> What type of force are you exerting when you
    9·1 answer
  • 45.6 mL of 0.0600 M Ba(OH)2 is added to 25.0 mL of HCl of unknown concentration. What is the concentration of HCl?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!