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
Veseljchak [2.6K]
2 years ago
5

The sum of the protons and neutrons in an atom equals the?

Chemistry
1 answer:
g100num [7]2 years ago
5 0

Answer:

atomic weight

Explanation:

The sum of the number of protons and neutrons is the atomic weight.

You might be interested in
Why does a hot air balloon rise when the air inside it is heated
Nastasia [14]

hot air rises up in the balloon and lifts the balloon up

7 0
3 years ago
What is the chemical formula of the following compound
OLga [1]
A. C3H10 is the answer
6 0
3 years ago
Please help !!
ozzi

Answer:

State the major concepts behind the kinetic molecular theory of gases.

Demonstrate the relationship between kinetic energy and molecular speed.

Apply the kinetic molecular theory to explain and predict the gas laws.

Explanation:

7 0
3 years ago
Read 2 more answers
Consider the reaction 4PH3(g) → P4(g) + 6H2(g) At a particular point during the reaction, molecular hydrogen is being formed at
Svetllana [295]

Answer:

The rate at which P_4 is being produced is 0.0228 M/s.

The rate at which PH_3 is being consumed is 0.0912 M/s.

Explanation:

4PH_3\rightarrow P_4(g)+6H_2(g)

Rate of the reaction : R

R=\frac{-1}{4}\frac{d[PH_3]}{dt}=\frac{1}{6}\frac{d[H_2]}{dt}=\frac{1}{1}\frac{d[P_4]}{dt}

The rate at which hydrogen is being formed = \frac{d[H_2]}{dt}=0.137 M/s

R=\frac{1}{6}\frac{d[H_2]}{dt}

R=\frac{1}{6}\times 0.137 M/s=0.0228 M/s

The rate at which P_4 is being produced:

R=\frac{1}{1}\frac{d[P_4]}{dt}

0.0228 M/s=\frac{1}{1}\frac{d[P_4]}{dt}

The rate at which PH_3 is being consumed :

R=\frac{-1}{4}\frac{d[PH_3]}{dt}

0.0228 M/s\times 4=\frac{-1}{1}\frac{d[PH_3]}{dt}

\frac{-1}{1}\frac{d[PH_3]}{dt}=0.912 M/s

6 0
3 years ago
How many moles of oxygen will be produced from the decomposition of 3 moles of KClO3?
AlexFokin [52]

Answer:

4.5moles

Explanation:

First, let us balance the equation given from the question. This is illustrated below:

KClO3 —> KCl + O2

There are 2 atoms of O on the right side and 3 atoms on the left. It can be balance by putting 2 in front of KClO3 and 3 in of O2 as shown below

2KClO3 —> KCl + 3O2

Now, we have 2 atoms each of K and Cl on the left side and 1atom each of K and Cl on the right. It can be balance by putting 2 in front of KCl as shown below:

2KClO3 —> 2KCl + 3O2

Now the equation is balanced.

From the balanced equation,

2 moles of KClO3 produced 3 moles of O2.

Therefore, 3 moles of KClO3 will produce = (3 x 3) /2 = 4.5moles of O2.

Therefore 3 moles of KClO3 will produce 4.5 moles of O2

5 0
3 years ago
Other questions:
  • I really need help with my science homework
    9·2 answers
  • Sodium metal reacts with chlorine gas to produce sodium chloride. What mass (grams) of sodium metal would be needed to fully rea
    11·1 answer
  • Products: 1-methylcyclohexene, 3-methylcyclohexene, methylenecyclohexane
    12·1 answer
  • You have decided to test the effects of five garden fertilizers by applying some of each to five separate rows of radishes. what
    13·1 answer
  • How much energy does a 930 nm wave of light have? (The speed of light in a
    14·1 answer
  • When does the object change direction?
    11·1 answer
  • HELP PLEASE ! ! DUE TODAY
    5·2 answers
  • Which particle is an atom with only 10 neutrons in its nucleus ?
    7·1 answer
  • Please help, any and all is very much appreciated!
    15·1 answer
  • The main function of the respiratory system is to –
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!