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
worty [1.4K]
3 years ago
12

How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain?

Chemistry
1 answer:
kherson [118]3 years ago
5 0
The number of protons in an atom is equal the atomic number (= 50)

The sum of the Neutrons and Protons is the Atomic Mass (=125)
Neutrons + Protons=125

Plug in for the protons (50)
Neutrons +(50)=125

Then, once solved, we have Neutrons = 75

Assuming the atom is NOT an ion, the amount of electrons is equal to the number of protons. (protons=electrons=50=50)

Therefore:
There are 50 electrons, 50 protons, and 75 electrons.

You might be interested in
What is sin? can <br>you explain me? anyone?​l
REY [17]

Answer:

In a religious context, sin is an act of transgression against divine law. Each culture has its own interpretation of what it means to commit a sin.

Explanation:

3 0
3 years ago
A brick has a mass of 4.0 kg and the Earth has a mass of 6.0 × 1027 g. Use this information to answer the questions below. Be su
Vedmedyk [2.9K]

Answer:

a) 2.4\times 10^{24} kg is the mass of 1 mole of bricks.

b) 2.5\times 10^3 moles of bricks have a mass equal to the mass of the Earth.

Explanation:

a) Mass of brick = 4.0 kg

1 mole = N_A=6.022\times 10^{23} particles/ atoms/molecules

Mass of N_A bricks :

=6.022\times 10^{23}\times 4.0 kg=2.4088\times 10^{24} kg\approx 2.4\times 10^{24} kg

2.4\times 10^{24} kg is the mass of 1 mole of bricks.

b)

Mass of the Earth = M = 6.0\times 10^{27} kg

Mass of 1 mole of brick = m=2.4\times 10^{24} kg

Let the moles of brick with equal mass of the Earth be x.

m\times x=M

x=\frac{M}{m}=\frac{6.0\times 10^{27}kg}{2.4\times 10^{24} kg}=2.5\times 10^3

2.5\times 10^3 moles of bricks have a mass equal to the mass of the Earth.

7 0
4 years ago
Is water evaporating from a pond a physical or chemical change and why
azamat
Evaporation is a physical phenomenon, as with the action of sunlight, the atoms that make up water (H2O) will stick to a greater state of agitation, causing their separation and subsequent evaporation. In more pressure, more energy would be required (heat, sunlight) to cause the separation. There is no change in the properties of the element, and the process is reversible.

hope his helps!.
3 0
3 years ago
Read 2 more answers
An object has a density of 20.00 g/mL. If the object has a volume of 50.00 mL, what is its mass?
LuckyWell [14K]

Answer:

<h3>The answer is 1000 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume of object = 50 mL

density = 20 g/mL

We have

mass = 20 × 50

We have the final answer as

<h3>1000 g</h3>

Hope this helps you

5 0
3 years ago
How many moles of atoms are in each elemental sample?
Vlada [557]

Answer:

Moles = mass(m) / Molar mass (M)

A. 1.24g of Zn

m = 1.24g

M = 65.4 g/mol

moles of Zn = 1.24g/ 65.4g/mol

= 0.01896mol

B. 28.1 g Ar

m = 28.1g

M(Ar) = 39.9g/mol

moles of Ar = 28.1g/39.9g/mol

= 0.7043 mol

C. 84.0 g Ta

m = 84.0g

M(Ta) = 181g/mol

moles of Ta = 84.0g/181g/mol

= 0.4641 mol

D. 2.29x10^-2 g Li

m = 2.29x10^-2 g

M(Li) = 6.9g/mol

moles of Li = 2.29x10^-2 g / 6.9g/mol

= 0.0033 mol

Hope this helps

8 0
3 years ago
Other questions:
  • Name this compound [TiBr3(NMe3)3]
    7·2 answers
  • Can someone please explain to me how to find the molar mass of hydrated sodium thiosulfate. I put the formula in above if you ne
    10·2 answers
  • How many valence electrons are in an atom of bromine?
    8·1 answer
  • Describe what happens when ionic and covalent (molecular) substances dissolve. Fill in the blanks using the options below:covale
    9·1 answer
  • The reaction between sulfur dioxide and oxygen is reversible.
    8·1 answer
  • C9H8O4 Aroms in formula
    12·2 answers
  • Ways to reduce your carbon footprint.
    14·1 answer
  • If answered correctly i will give brainlest​
    14·2 answers
  • What do adamantium,vibranium and unobtainum have in common
    11·1 answer
  • Find the mass of 4.55 x 1028 atoms of vanadium (V)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!