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
Alex
3 years ago
9

Calculate the percent water in each of the following hydrates:

Chemistry
1 answer:
koban [17]3 years ago
8 0
A) 40.5%
B) 44%
C) 28.9%
You might be interested in
A compound with a molar mass of 60g/mol is 40.4% carbon, 6.7% hydrogen and 53.3% oxygen (by mass). determine the emperical and m
Fittoniya [83]

<span>A compound is found to be 40.0% carbon, 6.7% hydrogen and 53.5% oxygen. Its molecular mass is 60. g/mol. 
</span>Q1)
Empirical formula is the simplest ratio of whole numbers of components making up a compound.
the percentages have been given, therefore we can calculate for 100 g of the compound.

                                C                            H                        O
Mass in 100 g      40.0 g                       6.7 g                   53.5 g
Molar mass            12 g/mol                1 g/mol                 16 g/mol
Number of moles   40.0/12= 3.33         6.7/1 = 6.7          53.5/16 = 3.34
Divide by the least number of moles  
                             3.33/3.33 = 1           6.7/3.33 = 2.01   3.34/3.33 = 1.00
after rounding off
C - 1 
H - 2
O - 1

Empirical formula - CH₂O

Q2)
Molecular formula is the actual number of components making up the compound.
To find the number of empirical units we have to find the mass of one empirical unit.
Mass of one empirical unit = CH₂O - 12 + (1x2) + 16 = 30 g
Mass of one mole of compound = 60 g
Number of empirical units = 60 g / 30 g = 2
Therefore molecular formula - 2(CH₂O) 
 Molecular formula - C₂H₄O₂
4 0
3 years ago
The brightness of a star is determined by _____.
Travka [436]

Answer:

Size and Temperature or E & B

Explanation:

7 0
2 years ago
Read 2 more answers
If pea plants with the genotypes RR and rr cross, what genotype will their offspring all have?
Aliun [14]
I think it’ll be Rr
6 0
3 years ago
Read 2 more answers
Does anyone know the answer?????​
Juli2301 [7.4K]

Answer:

In chemistry, pH (/piːˈeɪtʃ/) (abbr. power of hydrogen or potential for hydrogen) is a scale used to specify how acidic or basic a water-based solution is. Acidic solutions have a lower pH, while basic solutions have a higher pH.

Explanation:

that should answer ur question

3 0
3 years ago
1,670,000,000 in<br> scientific notation pleaseeee
noname [10]

Answer:

1.67 × 10^9

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • The molarity of sulfuric acid in a fully charged car battery is 5.2 m. when fully discharged the molarity is 4.8m. a 2.00ml samp
    7·2 answers
  • What is the volume of a 3.0 M solution of hydrochloric acid that contains 1.50 moles of solute?
    10·1 answer
  • Is spilling cake batter a physical or a chemical change?<br>Explain why?
    13·2 answers
  • What type of graph, that isn't a bar graph, would be used to show 3 different classes choices of a favourite program and how eac
    10·1 answer
  • If a wave produced by a fireworks explosion is that light wave or sound wave
    8·2 answers
  • How do scientist classify newly discovered organisms into domains and kingdoms? (6th Grade)
    5·1 answer
  • Pls don't answer if you done know. Which of the following best describes what would happen if mitosis did not take place?
    6·1 answer
  • Create their own food
    6·1 answer
  • What happens when an electrically charged pencil is placed close to the water running from a faucet?
    13·2 answers
  • What can you do to help reduce Acid Rain? List 5 ways. <br><br> Help me yall!! Imao
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!