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
cluponka [151]
3 years ago
9

Explain how you can use an atoms mass number and atoic number to determine the number of protrons electrons and neutrons in the

atom
Chemistry
1 answer:
VMariaS [17]3 years ago
7 0
Simple!

Atomic number= number of protons AND number of electrons (in an atom)

Mass number= number of neutrons


You might be interested in
All organisms need to obtain _?__ from food to survive
PSYCHO15rus [73]
All organisms need oxygen to survive
3 0
3 years ago
Why do you think there was a rush to mass-produce penicillin around the time of World War II?
Vladimir79 [104]

Answer:

penicillin could protect mice against infection from deadly Streptococci.

Explanation:

5 0
3 years ago
Read 2 more answers
What makes the human thumb so special?
Sophie [7]

Answer:

The thumb alone is controlled by nine separate muscles; The hand has been used as a symbol of protection since ancient times; The human hand is different to the hands or paws of other animals, because it has fingers and a thumb that can work together. Each finger has 3 bones and the thumb has two bones

Explanation:

3 0
2 years ago
Read 2 more answers
What are the molality and mole fraction of solute in a 22.3 percent by mass aqueous solution of formic acid (HCOOH)?
Vanyuwa [196]

Answer:

Mole fraction for solute = 0.1, or 10%

Molality = 6.24 mol/kg

Explanation:

22.3% by mass → In 100 g of solution, we have  22.3 g of HCOOH

Mass of solution = 100 g

Mass of solute = 22.3 g

Mass of solvent = 100 g - 22.3g = 77.7 g

Let's convert the mass to moles

22.3 g . 1mol/ 46 g = 0.485 moles

77.7 g. 1mol / 18 g = 4.32 moles

Total moles = 4.32 moles + 0.485 moles = 4.805 moles

Xm for solute = 0.485 / 4.805 = 0.100 → 10%

Molality → mol/ kg → we convert the mass of solvent to kg

77.7 g.  1 kg / 1000g = 0.0777 kg

0.485 mol / 0.0777 kg = 6.24 m

6 0
3 years ago
Read 2 more answers
The metals in Groups 1A, 2A, and 3A ____.
Ket [755]
The correct answer is D.


I hope that helped! c:
6 0
3 years ago
Other questions:
  • Deposition is a ________________ changing into a ____________________. 1. liquid, solid 2. solid, gas 3. gas, solid 4. liquid, g
    8·1 answer
  • Crystallisation is a separation technique used to separate____ solids from a liquid solvent.
    8·1 answer
  • If a gaseous mixture is made by combining 2.74 g Ar 2.74 g Ar and 4.90 g Kr 4.90 g Kr in an evacuated 2.50 L container at 25.0 ∘
    6·1 answer
  • What is the SI unit of time?<br><br> Asecond<br> B. minute<br> C. hour<br> D. day
    10·1 answer
  • I NEED HELP PLEASE, THANKS! :)
    13·1 answer
  • I WILL GIVE BRAINLY IF U HELP ME WITH THIS LITTLE PASSAGE
    14·1 answer
  • ХИМИЯ СОЧ
    12·2 answers
  • What are the elements in the first period
    15·2 answers
  • The group 13, period 5 metal in the periodic table
    14·1 answer
  • Which model of the atom is thought to be true?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!