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
Anvisha [2.4K]
3 years ago
8

Subtracting atomic number from atomic mass will give the number of

Chemistry
2 answers:
faltersainse [42]3 years ago
8 0

Answer:

:)

Explanation:

If we subtract the atomic number from the atomic mass: atomic mass - atomic number = number of protons + number of neutrons - number of protons. Thus we get the number of neutrons present in an atom when we subtract the atomic number from the atomic mass.

klasskru [66]3 years ago
8 0
Up there is the answer
You might be interested in
A sample of an unknown metal has a mass of 58.932g. it has been heated to 101.00 degrees C, then dropped quickly into 45.20 mL o
yaroslaw [1]
<h3>Answer:</h3>

0.111 J/g°C

<h3>Explanation:</h3>

We are given;

  • Mass of the unknown metal sample as 58.932 g
  • Initial temperature of the metal sample as 101°C
  • Final temperature of metal is 23.68 °C
  • Volume of pure water = 45.2 mL

But, density of pure water = 1 g/mL

  • Therefore; mass of pure water is 45.2 g
  • Initial temperature of water = 21°C
  • Final temperature of water is 23.68 °C
  • Specific heat capacity of water = 4.184 J/g°C

We are required to determine the specific heat of the metal;

<h3>Step 1: Calculate the amount of heat gained by pure water</h3>

Q = m × c × ΔT

For water, ΔT = 23.68 °C - 21° C

                       = 2.68 °C

Thus;

Q = 45.2 g × 4.184 J/g°C × 2.68°C

    = 506.833 Joules

<h3>Step 2: Heat released by the unknown metal sample</h3>

We know that, Q =  m × c × ΔT

For the unknown metal, ΔT = 101° C - 23.68 °C

                                              = 77.32°C

Assuming the specific heat capacity of the unknown metal is c

Then;

Q = 58.932 g × c × 77.32°C

   = 4556.62c Joules

<h3>Step 3: Calculate the specific heat capacity of the unknown metal sample</h3>
  • We know that, the heat released by the unknown metal sample is equal to the heat gained by the water.
  • Therefore;

4556.62c Joules = 506.833 Joules

c = 506.833 ÷4556.62

  = 0.111 J/g°C

Thus, the specific heat capacity of the unknown metal is 0.111 J/g°C

8 0
3 years ago
How would a fast-flowing river be most likely to move sand-sized particles of sediment?
Nitella [24]
A fast-flowing river would most likely be to move the skaters glide around the rink b<span>y lifting it up and carrying it downstream. In a fast-flowing river, the pressure is strong, which makes it easier for sand-sized particles of sediments to be carried or transferred. Hope this answer helps.</span>
3 0
3 years ago
A carbon atom with 6 protons, 6 electrons, and 6 neutrons would have a mass number of
Nata [24]
12, electrons dont have mass. only protons and neutrons do
7 0
3 years ago
Briefly describe the intermolecular forces present in your unknown
Korvikt [17]

An inter-molecular power is basically an alluring power between neighboring particles. There are three regular sorts of inter-molecular power: lasting dipole-dipole powers, hydrogen bonds and van der Waals' powers.

7 0
3 years ago
Draw the ground-state electronic configuration for Mg.
vichka [17]

Answer:

(Ne)3s2

Explanation:

6 0
3 years ago
Other questions:
  • A(n) _____ refers to two or more atoms held together by covalent bonds.
    11·1 answer
  • 2. Oxygen can combine with carbon to form two compounds, carbon monoxide, and carbon dioxide. The ratio of the masses of oxygen
    5·1 answer
  • A student makes a sound by blowing into the mouth of an empty soda bottle. How could the student make the sound louder?
    10·1 answer
  • Students set up an experiment to investigate whether or not a chemical
    14·1 answer
  • 11
    8·1 answer
  • Hi question, what number should I change the 9 to so it's balanced?
    15·1 answer
  • Help question in the pic below
    14·2 answers
  • A sample of an unknown compound is vaporized at . The gas produced has a volume of at a pressure of , and it weighs . Assuming t
    10·1 answer
  • Part G
    14·1 answer
  • How many moles of zinc, Zn, are in 1.31×1024 Zn atoms?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!