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
Marizza181 [45]
3 years ago
14

Find the molecular mass of.

Chemistry
2 answers:
dem82 [27]3 years ago
7 0

Answer:

Explanation:

MOLECULAR MASS = ∑ the elements atomic mass from the periodic table

1st NaO

molecular mass = atomic mass of Na + Atomic mass of O

                          = ( 23 + 16 ) = 39 g/mol

2nd : AlCl3

       M.m = atomic  mass of Al + Atomic mass of 3Cl

              (   27 +  3x35.5 )= 97 g/mole

3rd : Na3(SO4)

     M.mass =  atomic mass of 3 Na + atomic mass of S + atomic mass of 4 O

                    ( 3x23) +  32  + (4 x 16)  =165 g/mol

4th : Mg(OH)2

    M.mass = atomic mass of Mg + atomic mass of 2 O + atomic mass of 2

                 =   24 +   2x16 + 2x1 = 58 g/mol

   

Margaret [11]3 years ago
3 0

Answer:

  1. sodium oxide Nao
  2. aluminum chloride Al2cl3
  3. sodium sulphate Naso4
  4. <em>magnes</em><em>ium</em><em> </em><em>hydroxide</em><em> </em><em>Mgoh2</em>
You might be interested in
Purpose of boiling chip
vichka [17]
Your attempted answer is correct.
Indeed, certain liquids, including water, could superheat when heated in a perfectly smooth container.  The superheating could be interrupted by the minutest speck of dust or impurities causing a mass conversion into steam, observed physically as a bumping, causing splashes and endangering operators.  Boiling chips introduce these interruptions constantly and ensure a smooth boiling of the liquid.
4 0
3 years ago
Which statement is true? Postively charged objects attract other positively charged objects negatively charged objects attract o
ANEK [815]

Answer:

Explanation:one is true because if it is positiveit would not be attracting it would be sepperating

8 0
3 years ago
How many moles are in 124.7 g of Ba(OH)2
Alekssandra [29.7K]

Answer:

0.73 mol

Explanation:

No. of moles(n)= Given mass/molar mass.

Given mass=124.7g

Molar mass of Ba(OH)2= Molar mass of (Barium+2Oxygen+2Hydrogen)=137+32+2=171g

No. of moles= 124.7g/171g=0.73 mol

7 0
3 years ago
PLEASE ANSWER ASAP
RSB [31]

Question:

What would be the best way to increase the rate

of the reaction?

Answer:

D. She could make the original solutions at higher concentrations.

5 0
3 years ago
Read 2 more answers
What is the interaction between two charged particles called?
Roman55 [17]
Your answer might be Electromagnetism
5 0
3 years ago
Read 2 more answers
Other questions:
  • Elements numbered 11-18 comprise a family. True False
    11·1 answer
  • A 50.0-g sample of liquid water at 25.0 °c is mixed with 35.0 g of water at 51.0 °c. The final temperature of the water is _____
    5·2 answers
  • For the following reaction, identify one conjugate acid-base pair
    12·1 answer
  • Can you tell me what is erosion?
    14·1 answer
  • When is the potential energy between two atoms at zero?
    14·1 answer
  • When a substance condensed, what happens to the mass? (4 points)
    14·1 answer
  • When is energy released during a chemical reaction?
    10·2 answers
  • The sun provides the main source of energy for many of the phenomena that occur on Earth.
    11·2 answers
  • How many kilograms of oxygen did Samantha need to utilize to react with 36.29 kg of triglycerides (C55H104O6)?
    9·1 answer
  • An element's atomic number represents
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!