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
Free_Kalibri [48]
3 years ago
11

How many protons and neutrons in the atom K-42

Chemistry
1 answer:
katovenus [111]3 years ago
3 0
There are 20n nutrons in the atom k-42.
You might be interested in
13. Mercury has one of the lowest heat capacities. If 257J of heat are added to 5500g of mercury,the mercury's temp will increas
NikAS [45]

Given:

257J of heat

5500g of mercury

increase by 5.5 degrees Celsius

Required:

Specific heat of mercury

Solution:

H = mCpT

257J = (5500g of mercury) Cp (5.5 degrees Celsius)

Cp = 8.5 x 10^-3 Joules per gram per degree Celsius

3 0
3 years ago
The molar mass of V2O3 is<br> A. 66.94<br> B. 133.88<br> C. 149.88<br> D. 200.82
enot [183]
B. 133.88
Sorry po kung mali
4 0
3 years ago
The formula for a chemical reaction is given. 2Na + 2H2O → 2NaOH + H2 Which of the following describes this reaction? Group of a
professor190 [17]
It is a reaction between an element and a compound that results in a different element and compound
5 0
3 years ago
Examine the images.
gavmur [86]

Answer:

4 th image

Explanation:

water is being boiled n the 4th image indicating that the change between liquids and gasses is water vapor.

5 0
3 years ago
Read 2 more answers
A sequence of thermonuclear fusion processes inside massive stars can continue to transform the nuclei of elements such as carbo
nlexa [21]

Answer:

Iron is the element that is produced at the limit of the reaction.

Explanation:

In nuclear fusion 2 lighter nuclei are combined together into a single nucleus releasing a tremendous amount of energy in the process.

Up to fusion of iron the reaction of fusion is exothermic but when iron atom pops out the reaction becomes endothermic and it requires very high amount of energy to fuse iron atoms which is not available thus marking an end to the fusion reaction.

5 0
3 years ago
Other questions:
  • The complete combustion (reaction with oxygen) of liquid octane (C8H18) a component typical of the hydrocarbons in gasoline, pro
    10·1 answer
  • What is the weight of 4.30 mole of sodium
    15·1 answer
  • While carrying a microscope slide to her lab bench, a student drops it and the slide shatters on the floor.The next step should
    15·2 answers
  • Please Help!
    11·2 answers
  • What is the name of this hydrocarbon?
    6·1 answer
  • 1. How to elements differ from compounds?
    10·1 answer
  • Ok help it’s for homework
    15·2 answers
  • Explain how Milankovitch cycles can be used to predict future changes in Earth's climate
    11·1 answer
  • What is the molarity of a CaCl2 solution containing 150g of CaCl2 in 400 mL?
    6·1 answer
  • Many of these microscopic organisms are _____, or unicellular.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!