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
GarryVolchara [31]
3 years ago
11

_______ the atomic number is the same number of these particles?

Chemistry
1 answer:
Andrej [43]3 years ago
6 0
The atomic number is equal to the number of protons 
You might be interested in
15. How many grams are equal to 0.11 mole of copper(1) chromate, Cu2(CrO4)? with work please​
aleksandr82 [10.1K]

Answer:

26.8g

Explanation:

The formula of the compound given is:

          Cu₂CrO₄

Given:

Number of moles  = 0.11

To find the mass, we use the expression below:

        Mass  = number of moles x molar mass

Molar mass of  Cu₂CrO₄ = 2(63.6) + 52 + 4(16) = 243.2g/mol

Now insert the parameters and solve;

 Mass  = 0.11 x 243.2 = 26.8g

7 0
3 years ago
What is the light transmission of chlorine?
nydimaria [60]

Explanation:

The Absorption of Light by Chlorine, Bromine and their Gaseous Mixtures

4 0
3 years ago
The atomic number of manganese (Mn) is 25. What's the electron configuration for manganese?
vodomira [7]

Answer:

\boxed{\sf D. \  [Ar] \ 3d5 \ 4s2}

Explanation:

Manganese is a group 7 transition metal with an electronic configuration of [Ar] 3d5 4s2.

7 0
3 years ago
Read 2 more answers
A chemist needs 500.0 mL of a 1.500 M perchloric acid solution. The stockroom provides the chemist with
Lynna [10]

Answer:-  47.62 mL

Solution:- It is a dilution problem where we are asked to calculate the volume of 15.75 M perchloric acid solution required to make 500.0 mL of 1.500 M solution.

For solving this type of problems we use the dilution equation:

M_1V_1=M_2V_2

Where, M_1 is the concentration of the concentrated solution and V_1 is it's volume.

M_2 is the concentration of the diluted solution and V_2 is it's volume.  Let's plug in the values in the equation and solve it for V_1 .

15.75M(V_1)=1.500M(500.0mL)

On rearranging this for V_1 :

V_1=\frac{1.500M(500.0mL)}{15.75M}

V_1=47.60mL

So, 47.62 mL of 15.75 M perchloric acid are required to make 500.0mL of 1.500 M solution.

3 0
4 years ago
What is the correct Lewis structure for chloroform CHCI3
krek1111 [17]
Lewis structure for CHCl3

7 0
3 years ago
Other questions:
  • One mole of neon gas equals how many grams?
    10·1 answer
  • This is a model of a normal chromosome
    13·1 answer
  • Use the concept of electron configurations to explain why the number of valence electrons in metals tends to be less than the nu
    11·1 answer
  • A sheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200°C and is permitted to achieve a steady-state diffus
    9·1 answer
  • Which of the following statements is true for gas particles? A. They move freely and combine with each other. B. They don’t move
    7·2 answers
  • What metal is oxidized in a non - rechargeable flashlight battery ? Enter the chemical symbol of the element
    10·1 answer
  • A person uses 770 kcal on a long hike. Calculate the energy used for the hike in each of the following energy units.
    9·1 answer
  • We can identify unknown elements in a star by matching the ___________ spectrum of the star to those of known elements. *
    7·1 answer
  • Calculate the pH of a buffer solution prepared by dissolving 0.20 mole of cyanic acid (HCNO) and 0.80 mole of sodium cyanate (Na
    5·1 answer
  • 7 types of motion you experience through the day.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!