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
notka56 [123]
3 years ago
5

What equation tells you how to calculate the number of neutrons in an atom??

Chemistry
1 answer:
adelina 88 [10]3 years ago
4 0
Number of nucleons--number of protons
=number of neutrons
You might be interested in
If 50.75 g of a gas occupies 10.0 l at stp, 129.3 g of the gas will occupy __________ l at stp.
Rom4ik [11]
Use PV = mRT/M and solve for R. R = PVM/RT. Since you have the same gas under two sets of conditions then you can write 
<span>P1V1M1/m1T1 = P2V2M2/m2T2 </span>
<span>Since P, M and T are constant, the equation becomes </span>
<span>V1/m1 = V2/m2 </span>
<span>Now plug in your values and solve for V2</span>
6 0
3 years ago
Read 2 more answers
If a piece of metal has a density of 9.865 g and a volume of 14 ml, what is its mass?
vodka [1.7K]

Answer:

I think the answer is 138.11 gram

Explanation:

8 0
3 years ago
1. How many calcium atoms are in 8CaOH?
Vedmedyk [2.9K]

Answer:

8

Explanation:

the number before the abbrviation for calcium (Ca) shows how many calcium there is.

6 0
3 years ago
Read 2 more answers
The average atomic mass of iron is 55.845 amu. this average mass represents?
marysya [2.9K]

Answer:

the elements atomic mass

Explanation:

8 0
3 years ago
Calculate the specific heat in J/(g·ºC) of an unknown substance if a 2.50-g sample releases 12.0 cal as its temperature changes
Degger [83]

Answer:

\fbox{c =  - 4.01 \: joule/g°C}

<em><u>Step by step explanation</u></em><em><u>:</u></em>

<em>Given:</em>

Mass of given sample (m) = 2.50 g

Initial temperature (T1) = 25°C

Final temperature (T2) = 20°C

Heat Energy Q = 12 cal

<em>T</em><em>o </em><em>find:</em>

<em>Specific \:  Heat \:  c = \:  ?</em>

<em>Solution</em><em>:</em>

We know that,

<em>Specific</em><em> </em><em>heat</em> <em>of </em><em>any </em><em>substance </em><em>is </em><em>directly</em><em> </em><em>proportional</em><em> </em><em>to </em><em>the </em><em>mass </em><em>and </em><em>change </em><em>in </em><em>temperature.</em>

Represented by equation,

Q = mc \triangle T

Where,

<em>Q = Heat Energy</em>

<em>m = mass of given sampl</em><em>e</em>

<em>c = specific heat</em>

<em>∆T = change in </em><em>temperature</em>

Substituting corresponding values,

<em>Q = mc \triangle T \\  12 = 2.5\times c \times (20-25) \\ c  =  \frac{12}{2.5 \times ( - 5)}  \\  c =  - 0.96 \: cal/g°C \\</em>

We also know that,

1  \: cal = 4.184  \: joules

multiplying above answer by 4.184,

c =  - 0.96 \times 4.184 \\  \fbox{c =  - 4.01 \: joule/g°C}

<em>Thanks for joining brainly community!</em>

6 0
3 years ago
Other questions:
  • An ionic bond occurs between what particles?
    7·2 answers
  • Balance the following equations by inserting the proper coefficients.
    12·2 answers
  • Why are car crashes more dangerous at higher speeds than at lower speeds
    11·2 answers
  • How manymoles of each ion are present in 175 mL of 0.147 M Fe2(SO4)3?
    10·1 answer
  • List the types of electricity
    15·2 answers
  • PLS HELPPP!!!!
    13·1 answer
  • Chemical and physical element properties are determined by their valence electrons. How do you describe metals with only one val
    6·1 answer
  • Which of the following statements is NOT true about practice?
    11·2 answers
  • True or false: Heterotrophs need to go find and eat food.?<br><br><br> :FALSE<br><br> :TRUE
    10·1 answer
  • An ion of oxygen- 16 contains 8 protons and has a 2- charge. How many electrons does it have?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!