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
Mice21 [21]
3 years ago
13

The number of _______ in an atom of an element is the element's atomic number

Chemistry
1 answer:
const2013 [10]3 years ago
5 0
The number of protons in an atom is the atom's atomic number.
In a neutral atom the number of protons is equal to the number of electrons.
There is possibility of losing the electrons, but the number of protons are not loosed, except in nuclear chemistry.
So the number of protons is equal to the atom's atomic number.
You might be interested in
What is the mass of an object that requires a force of 25 N to accelerate at 5 m/s/s?
AfilCa [17]
The mass is 6 Kilograms

Explanation:

Force
=
mass
⋅
acceleration

30
=
m
⋅
5

m
=
6
K
g
The mass is 6 Kilograms
8 0
3 years ago
Torrey's neighbor told her that a marble rolling down a hill increases in velocity as it rolls down, but does not increase in ki
ziro4ka [17]

Answer:

Torrey's neighbour is incorrect because increase in kinetic energy is proportional to velocity.  If the velocity increases so will the object's kinetic energy.  Because the mass is constant, if the velocity increases, so does the kinetic energy.

6 0
3 years ago
I didn’t mean to click that answer I dropped my phone on the computer.
Yanka [14]

its A plant like protist produce oxygen ...

5 0
3 years ago
The following thermochemical equation is for the reaction of sodium(s) with water(l) to form sodium hydroxide(aq) and hydrogen(g
ra1l [238]

Answer:

1) When 6.97 grams of sodium(s) react with excess water(l), 56.0 kJ of energy are evolved.

2) When 10.4 grams of carbon monoxide(g) react with excess water(l), 1.04 kJ of energy are absorbed.

Explanation:

1) The following thermochemical equation is for the reaction of sodium(s) with water(l) to form sodium hydroxide(aq) and hydrogen(g).

2 Na(s) + 2H₂O(l) ⇒ 2NaOH(aq) + H₂(g) ΔH = -369 kJ

The enthalpy of the reaction is negative, which means that 369 kJ of energy are evolved per 2 moles of sodium. The energy evolved for 6.97 g of Na (molar mass 22.98 g/mol) is:

6.97g.\frac{1mol}{22.98g} .\frac{-369kJ}{2mol} =-56.0kJ

2) The following thermochemical equation is for the reaction of carbon monoxide(g) with water(l) to form carbon dioxide(g) and hydrogen(g).

CO(g) + H₂O(l) ⇒ CO₂(g) + H₂(g)  ΔH = 2.80 kJ

The enthalpy of the reaction is positive, which means that 2.80 kJ of energy are absorbed per mole of carbon monoxide. The energy evolved for 10.4 g of CO (molar mass 28.01 g/mol) is:

10.4g.\frac{1mol}{28.01g} .\frac{2.80kJ}{mol} =1.04kJ

3 0
3 years ago
The main goal of developing technology is to___?
sammy [17]

I believe the correct answer is C, but I'm 100% on this.  Hope this helped though!

-TTL

8 0
3 years ago
Read 2 more answers
Other questions:
  • As the distance from a magnet increases, what happens to the magnetic force? increases decreases remains the same depends on the
    11·2 answers
  • What elements make up a molecule of a glucose?
    12·1 answer
  • Calcium acetate is added to sodium carbonate
    14·1 answer
  • Tell me whats wrong in this
    13·1 answer
  • How can some of the difficulties caused by the Down Syndrome be over come?
    11·1 answer
  • Please someone answer this for me ASAP
    13·1 answer
  • Someone please HELPPPP
    5·1 answer
  • Which of the following is not a natural change to the envlronment? drought , flood, disease ranching​
    14·2 answers
  • What is the title with a "salt" compound?
    15·1 answer
  • As atoms get smaller,valance electrons are getting closer or farther away from the nucleous.The force of attraction is stronger
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!