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
SCORPION-xisa [38]
3 years ago
12

If an atom has 34 protons and 40 neutrons, what is its mass number? 40 6 74 34

Chemistry
2 answers:
Darya [45]3 years ago
7 0
Protons+Neutrons
34+40= 74
schepotkina [342]3 years ago
5 0

The answer is 74

The mass equals the number protons and neutrons.

34+40= 74

You might be interested in
1.883 Grams of copper reacted with excess sulfur to form an unknown Copper sulfide. The reaction creates 2.308 grams of an unkno
rosijanka [135]

Answer:

um it is most likely copper

Explanation:

8 0
3 years ago
What is the [OH-],[H3O] and PH for the following
malfutka [58]

The values for hydroxide ions, hydronium ions and pH are found in the attached picture.

Explanation:

See the attached picture.

Learn more about:

pH

brainly.com/question/1525823

#learnwithBrainly

4 0
3 years ago
Someone please help me answer this.
pantera1 [17]
Cloudy skies and precipitation. Rain is normally caused by water vapor within the condensation of the low pressure system.
7 0
3 years ago
Which of the following describes the relationship correctly?
galben [10]
A. Air expands, becomes less dense and rises when the temperature is high due to the increased kinetic energy. This causes the air molecules to move around much more so they are further apart.
8 0
3 years ago
Read 2 more answers
Write the net ionic equation for the reaction that occurs when equal volumes of 0.546 M aqueous acetylsalicylic acid (aspirin) a
Tatiana [17]

Answer:

C_9H_8O_4+C_2H_3O_2^-\rightarrow C_2H_4O_2+C_9H_7O_4^-

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to figure out the required net ionic equation by firstly writing out the complete molecular equation between aspirin and sodium acetate:

C_9H_8O_4+NaC_2H_3O_2\rightarrow C_2H_4O_2+NaC_9H_7O_4

Whereas acetic acid and sodium acetylsalicylate are formed. Now, we write the complete ionic equation whereby sodium acetate and sodium acetylsalicylate are ionized because they are salts yet neither aspirin nor acetic acid are ionized as they are weak acids:

C_9H_8O_4+Na^++C_2H_3O_2^-\rightarrow C_2H_4O_2+Na^++C_9H_7O_4^-

Finally, for the net ionic equation we cancel out the sodium spectator ions to obtain:

C_9H_8O_4+C_2H_3O_2^-\rightarrow C_2H_4O_2+C_9H_7O_4^-

Regards!

7 0
3 years ago
Other questions:
  • How many hydrogen atoms are in 11C2H6
    9·2 answers
  • NOT A SERIOUS QUESTION IM JUST EXPLORING BRAINLY.COM!!
    12·1 answer
  • What are the sub-particles that make up an atom? (select all that apply) *?
    6·1 answer
  • My question is what is a cell?
    7·1 answer
  • What kind of tools did prehistoric people make with flint
    13·1 answer
  • Physical properties of a spoonful of sugar
    9·2 answers
  • Europium orbital diagram
    14·1 answer
  • Potential Energy vs Height
    10·1 answer
  • Which one of these salts will form a basic solution upon dissolving in water?
    13·1 answer
  • Consider the balanced equation.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!