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
Mandarinka [93]
2 years ago
13

What is the percentage of water in the following compound? answer using one decimal place. sodium carbonate decahydrate, na2co3

• 10h2o % by mass h2o
Chemistry
2 answers:
ehidna [41]2 years ago
6 0

The percentage by mass of water in Na2CO3.10H2O from the calculation is  62.9%

<h3>What is percentage by mass?</h3>

The term percentage by mass refers to the amount of a particular moiety by mass in a molecule.

In this case, we know that the molar mass of Na2CO3.10H2O is 286 g/mol the molar mass of the 10 moles of water is 180 g/mol hence the percentage by mass of water in the compound is; 180 g/mol /286 g/mol  * 100/1 = 62.9%

Learn more about percentage by mass: brainly.com/question/16885872

#SPJ2

vaieri [72.5K]2 years ago
4 0

Answer:

63.0

Explanation:

got it wrong so it told me the answer

You might be interested in
I NEED ASAP PLEASE!!
miss Akunina [59]

Answer: freezing and evaporation for sure

Explanation:

7 0
4 years ago
How Does The Modern Periodic Table Arrange Elements? By Atomic Mass By Atomic Number
Vlada [557]
By increasing Atomic number
7 0
3 years ago
Convert 7.1x10^25 molecules of water to moles
ruslelena [56]

Answer:

<h2>117.94 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{7.1 \times  {10}^{25} }{6.02 \times  {10}^{23} }  \\  = 117.940199...

We have the final answer as

<h3>117.94 moles</h3>

Hope this helps you

8 0
3 years ago
Which mammal below lays tough leathery eggs? A) bear (placental) B) duck-billed platypus (monotreme) C) kangaroo (marsupial) D)
PolarNik [594]

Answer:

the answer to your question is B) Monotreme.

Explanation:

most mammals do not lay eggs, they give birth. But, monotreme mammals including the duck-billed platypus do in fact lay shelled eggs.

7 0
3 years ago
Read 2 more answers
18°C = _____ -255 K 0 K 18 K 291 K
horrorfan [7]
T K = ºC + 273

T = 18 + 273

T = 291 K

hope this  helps!
7 0
3 years ago
Read 2 more answers
Other questions:
  • 4. A burning candle is an example of a chemical reaction taking place. What i
    15·1 answer
  • g Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas
    8·1 answer
  • Draw the product formed by the reaction of t-butoxide with (1r,2s)-1-bromo-2-methyl-1-phenylbutane (shown below). (draw the corr
    10·2 answers
  • Protons, neutrons and electrons of zn
    14·1 answer
  • A duck flies 60 meters in 10 seconds. What is the duck’s speed?
    7·1 answer
  • Consider this reaction: 2H+ + CO32- → H2O + CO2. Identify each of the following as a product, a reactant, or a coefficient.
    5·2 answers
  • Which of these is reasonable for most of the damage caused by a tornado
    5·2 answers
  • People mine zinc metal for use as an anticorrosive, skin protectant, and in electrical components. Zinc mining involves using ch
    15·2 answers
  • 1. Which of the following are
    8·1 answer
  • MARKING BRAINLIEST! HURRY!!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!