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
lora16 [44]
3 years ago
8

The molecular mass of sodium oxide (Na2O) is

Chemistry
1 answer:
yuradex [85]3 years ago
6 0
<span>The molecular mass of sodium oxide (Na2O) is A. 61.97894. The molecular mass of a molecule (Mr) is the sum of atomic masses of its atoms (Ar). The molecular mass of sodium oxide is: Mr(Na2O) = 2 * Ar (Na) + Ar(O). From the periodic table, Ar(Na) = 22.989769 and Ar(O) = 15.9994. The molecular mass of sodium oxide is: Mr(Na2O) = 2 * 22.989769 + 15.9994 = 45.979538 + 15.9994 = 61.97894.</span>
You might be interested in
True/False (A= True &amp; B =False) 46. Blood is a tissue. 47. Elastic cartilage is found in the ears, nose, epiglottis and lary
swat32

Answer:

46.A 47.B 48.B 49.A.50.A.51.B.52.B

5 0
4 years ago
The density of an element is 19.3 g/cm^3. What is its density in kg/m^3?
Karolina [17]
First, you need to know 1 kg = 10^3 g. And 1 m^3 = 10^6 m^3. So the 1 g/cm3 = 10^3 kg/m3. So the answer is 1.93*10^4 kg/m3.
5 0
3 years ago
One mole of copper(ii) sulfate, cuso4, contains ________ o atoms.
Ierofanga [76]
According  to  avogadro   constant,  the  number  of  units  in  one  mole  of  any  substance   contain  6.022  x10  ^23  atoms

therefore  the  number  of  o  atoms  in   one  mole  of    CuSO4  =  6.022 x 10 ^ 23
6 0
3 years ago
Read 2 more answers
How many kL does a 9.51 ´ 109 cL sample contain?
elena-14-01-66 [18.8K]

Answer:

9.51 × 10⁴ kL

Explanation:

Step 1: Given data

Volume of the sample (V): 9.51 × 10⁹ cL

Step 2: Convert "V" to liters

We will use the conversion factor 1 L = 100 cL.

9.51 × 10⁹ cL × (1 L / 100 cL) = 9.51 × 10⁷ L

Step 3: Convert "V" to kL

We will use the conversion factor 1 kL = 1000 L.

9.51 × 10⁷ L × (1 kL / 1000 L) = 9.51 × 10⁴ kL

9.51 × 10⁹ cL is equal to 9.51 × 10⁴ kL.

4 0
3 years ago
I just need the right answer plz
astraxan [27]

Answer:

-0.5

Explanation:

5 0
3 years ago
Other questions:
  • Which of the following substances would best be measured using mole quantities?
    10·1 answer
  • Which one of the following substances would be the most soluble in CCl4?
    15·1 answer
  • PLEASE HELP!!!!!!!!!
    10·1 answer
  • We know that the law of conservation of energy states that energy can not be created or destroyed. It only changes form. Conside
    11·2 answers
  • When the drug heroin comes into contact with the Marquis reagent chemical what happens?
    5·2 answers
  • Which choice is not a property of an acid?
    5·1 answer
  • The most laterally placed of the three erector spinae components, the ___________ group, is composed of three parts: cervical, t
    8·2 answers
  • 3. (05.04 MC)
    8·1 answer
  • Using just the valence electrons on each atom determine which 2 atoms should be in the same group?
    5·1 answer
  • Which of the following is a liquid someone help!!!!!
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!