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
Evgesh-ka [11]
4 years ago
7

How to calculate atomic mass?

Chemistry
2 answers:
forsale [732]4 years ago
8 0
Atomic Mass = Mass of Proton and Neutron
likoan [24]4 years ago
3 0
Setermine which isotopes are in the sample
You might be interested in
What is the symbol of the ion with 36 electrons and a +2 charge?
AlladinOne [14]

Answer:

Strontium

Explanation:

The atomic number of strontium is 38.

It has 38 electrons.

It is alkaline earth metal. It has two valance electrons.

Strontium loses its two electrons and form cation with +2 charge.

Electronic configuration;

Sr₃₈ = [Kr] 5s²

The valance electrons present in 5s are lost by strontium atom and form Sr⁺² cation.

it is yellowish-white metal.

It is highly reactive.

It form salt with halogens.e.g

Sr    +   Br₂    →     SrBr₂

IT react with oxygen and form oxide.

2Sr   +   O₂   →    2SrO

this oxide form hydroxide when react with water,

SrO  + H₂O   →  Sr(OH)₂

With nitrogen it produced nitride,

3Sr + N₂     →  Sr₃N₂

With acid like HCl,

Sr + 2HCl  →  SrCl₂ + H₂

3 0
3 years ago
The chemical formula for the ionic compound aluminum sulfite is Al2(SO3)3. Explain why there are 2 cations for every 3 anions in
svp [43]

Answer:

Explanation:

While trying to write the chemical formula for a compound (a neutral molecule), one must identify and exchange the charge of the cation with that of the anion to become the subscript of one other. For example

Aluminium oxide has Aluminium (Al) and oxygen (O); since Al has a charge of 3+ (the cation) and O has a charge of 2- (the anion), the compound would have it's charges as Al³⁺O²⁻ and when the charges are exchanged to there subscripts, it would form Al₂O₃; thus there would be two cations of aluminium for every three anions of oxygen in order to have a neutral molecule.

This same explanation can be given to Aluminium sulfite. Aluminium sulfite has Aluminium (Al) and sulfite (SO₃). Al has a charge of 3+ (cation) while sulfite has a charge of 2- (anion), with the compound having it's charges as Al³⁺(SO₃)²⁻ and when the charges are exchanged to there subscripts, it would form Al₂(SO₃)₃ and would thus have 2 cations of aluminium (Al³⁺) for every 3 anions of sulfite (SO₃³⁻) in order to have a neutral molecule.

8 0
3 years ago
Write the complete balanced equation for the following reaction: C7H6O+O2 CO2+H2O
zavuch27 [327]

Answer:

C7H6O+8O2 ---> 7CO2+3H2O

Explanation:

number of atoms of each element must be equal in both sides

6 0
3 years ago
When barium chloride reacts with potassium sulfate, barium sulfate and potassium chloride arc produced. The balanced equation fo
expeople1 [14]

Answer:

Ratio between the reactants is 1:1, so if 2 moles of potassium sulfate react, The reaction consumes 2 moles of barium chloride

The reaction produces 2 moles of barium sulfate ( ratio is 1:1) and 4 moles of potassium chloride. (Ratio with this is 2:4)

Explanation:

This is the reaction:

BaCl₂(aq) + K₂SO₄(aq) → BaSO₄(s) + 2KCl(aq)

Ratio between the reactants is 1:1, so if 2 moles of potassium sulfate react, The reaction consumes 2 moles of barium chloride

The reaction produces 2 moles of barium sulfate ( ratio is 1:1) and 4 moles of potassium chloride. (Ratio with this is 2:4)

6 0
3 years ago
Read 2 more answers
PLEASE ANSWER
anastassius [24]

the correct answer should be a

4 0
3 years ago
Read 2 more answers
Other questions:
  • I need help with a chemistry question
    10·1 answer
  • How do the properties of table salt compare with those of sodium and chlorine?
    7·1 answer
  • Balance equation HBr (aq)+NH3(aq)
    7·1 answer
  • Knowing that gold has a density of 19.3g/mL, does the
    13·1 answer
  • How many molecules of ch4 are present in .41 moles
    14·1 answer
  • The point on a phase diagram at which all phases occur simultaneously is called the: -end point
    7·2 answers
  • Hello whats the answer to"What is 20 000 Hz In kHz" thanks this for my range of hearing homework
    13·1 answer
  • How many carbon atoms are there in 200 molecules of C3H2O?
    11·1 answer
  • Mannose is a type of sugar that consists of C, H and O and its relative molecular mass is 180. If 2.36 g sample of mannose conta
    13·1 answer
  • What is the answer??????​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!