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
dedylja [7]
3 years ago
9

If an element has 12 protons, 13 neutrons, and 15 electrons, what is its mass?

Chemistry
1 answer:
-BARSIC- [3]3 years ago
7 0

Answer:

25

Explanation:

mass number = protons + neutrons

= 13 + 12 = 25

You might be interested in
The taste of acid is sour​
arlik [135]

Answer:

have you tasted acid?

Explanation:

also the taste of salt is sour.

7 0
3 years ago
Read 2 more answers
What do you think is the primary reason why the Unionid mussel population declined whenever there is a dramatic increase in the
igomit [66]

Answer:

When the Zebra arrived they ate all the food so the Unionid mussels declined as they died from the lack of food. Causing the Zebra Zebra numbers to increase and Unionid numbers to decline.

4 0
3 years ago
Radioactivity is the process of nuclear decay. <br> True or False
Taya2010 [7]
True :)
......................
4 0
3 years ago
Enter a balanced equation for the dissolution of caco3.
Tatiana [17]

Answer:

CaCO3(aq) → Ca2+(aq ) + CO3 2-(aq)

Explanation:

  • Dissolution reactions are reactions that occur when a solute either in gaseous, liquid, or solid form dissolves in a solvent such as water to form a solution.
  • In this case we are given Calcium carbonate (CaCO3) which undergoes dissolution according to the equation;
  • CaCO3(aq) → Ca2+(aq ) + CO3 2-(aq)
  • Then<em><u> the bicarbonate ion combines with two protons from water to form a weak acid H2CO3. The weak acid is then broken down to form CO2 and H2O since its unstable.</u></em>
5 0
3 years ago
Which describes the path of energy that a gas powered car uses to drive along a road?
harkovskaia [24]

Answer:

mechanical energy to electrical energy to light energy

4 0
3 years ago
Other questions:
  • According to Dalton's atomic theory, which statement is true about atoms of the same element? They can be destroyed. They have i
    8·2 answers
  • Which term identifies the most probable location of an electron in the wave- mechanical model of an atom?
    5·1 answer
  • Unlike the earth, the sun _____.
    6·2 answers
  • Which of these is NOT a physical change?
    6·1 answer
  • Assume that the reaction for the formation of gaseous hydrogen fluoride from hydrogen and fluorine has an equilibrium constant o
    9·1 answer
  • I don’t understand this one at all
    7·1 answer
  • The elements with the highest ionization energy, and thus the lowest reactivity are
    8·2 answers
  • State the purpose of respiration.​
    6·2 answers
  • Calculate the moles of benzoic acid (C6H5COOH) in a 55.66 g sample of benzoic acid
    14·1 answer
  • Shameeka is studying for an exam. She took the notes below about calcium and chlorine, which are known to form ionic bonds. Calc
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!