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
andreyandreev [35.5K]
3 years ago
5

How is the mass number calculated for an element

Chemistry
2 answers:
scoundrel [369]3 years ago
8 0
Mass number=Atomic number+ number of neutrons. Hope it helps
Anon25 [30]3 years ago
3 0
Find the number of protons and neutrons of that element and add them together. You might need periodic table. Hope it helps.
You might be interested in
What is the speed of a softball that travels 20 m in 2 sec?
sladkih [1.3K]
The ball travels 10m/s

Speed = distance/time
7 0
2 years ago
Read 2 more answers
How many grams of aluminum will be deposited by 0.1F? (Al=27) a.0.3g b. 0.9. c. 9.0g. d. 2.7g<br>​
andrezito [222]

Based on the charge on the aluminium ion, 0.9 g of aluminium are deposited by 0.1 F of electricity.

<h3>What is electrolysis?</h3>

Electrolysis is the decomposition of a substance known as an electrolyte when electric current is passed through it.

The mass and hence moles an electrolyte deposited when current is passed through it depends on the charge on the ion.

Aluminium ion has a charge of +3 and requires 3F of electricity to deposit 1 mole or 27 g of aluminium

0.1 F will discharge = 0.1/3 × 27 g of aluminium

mass of aluminium deposited = 0.9 g of aluminium.

Therefore, 0.9 g of aluminium are deposited by 0.1 F of electricity.

Learn more about electrolysis at: brainly.com/question/26050361

5 0
2 years ago
if the gas pressure exerted by a gas at 45 degrees celsius in a volume of 1.944 ATM, how many moles of gas are present?​
Firdavs [7]
If the.pressure exerted by a gas at [math]25^{\circ} \mathrm{C}[/math] in a volume of 0.044 L is 3.81 atm, how many moles of gas are present
8 0
3 years ago
Which lists the waves in order of frequency, from highest to lowest?
serg [7]
Radio waves.
microwaves.
infrared waves.
light.
ultraviolet waves (rays)
x-rays.
gamma rays.
6 0
3 years ago
Read 2 more answers
Which molecule has a dipole moment of 0 d?
fiasKO [112]
The answer is 

a symmetrical molecule.


5 0
3 years ago
Other questions:
  • Imagine a beaker divided down the center by a rigid membrane that is freely permeable to water but impermeable to glucose. Side
    14·1 answer
  • What maximum fraction of the air in the room could be displaced by the gaseous nitrogen?
    11·1 answer
  • What types of atoms typically form metallic bonds?
    9·1 answer
  • Choose the products that complete the reaction. The chemical equation may not be balanced.
    14·2 answers
  • Plz help me well mark brainliest if you are correct!
    14·1 answer
  • What types of objects are using electricity in your home today?
    6·1 answer
  • Danny is trying to figure out how fast sugar crystals can dissolve in water. He has already tested crystals of table sugar by ju
    5·2 answers
  • 25.88 grams of tin (ll) phosphate reacts with 31.73 grams of zinc.
    8·1 answer
  • Is alka seltzer and acid or a base or netural
    7·1 answer
  • A barium hydroxide solution is prepared by dissolving 2.81 g of Ba(OH)2 in water to make 25.6 mL of solution. What is the concen
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!