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
Solnce55 [7]
3 years ago
8

Which compound has the highest precent composition by mass of strontium?

Chemistry
1 answer:
PilotLPTM [1.2K]3 years ago
4 0
First find the molar masses of all of the compounds:
SrCl2 = 158.53g/mol
SrI2 = 341.43g/mol
SrO = 103.62g/mol
SrS = 119.68g/mo

Then find the molar mass of Sr in each of the compounds. Since there is only one Sr in every compound, the mass will be the same: 87.62g/mol Sr

Now divide the molar mass of Sr by each of compounds' masses:
SrCl2 = (87.62)/(158.53) = 0.553
SrI2 = (87.62)/(341.43) = 0.257
SrO = (87.62)/(103.62) = 0.846
SrS = (87.62)/(119.68) = 0.732

Now multiply each of the results by 100 to get the percent composition of Sr by mass:
(0.553)(100) = 55.3% Sr in SrCl2
(0.257)(100) = 25.7% Sr in SrI2
(0.846)(100) = 84.6% Sr in SrO
(0.732)(100) = 73.2% Sr in SrS

Thus SrO has the highest percent composition by mass of Sr
You might be interested in
Why do lithium (Li) and sodium (Na) have similar properties?
ella [17]
B, they belong to group 1

A: Li is period 2 and Na is period 3

C: Na has one more electron shell

D: Not related to how it is spelled
8 0
3 years ago
What is one beneift of using scientific notation instead of regular notation
kotykmax [81]

Answer:

its shorter than a regular one

Explanation:

the only reason is simply because it is shorter

8 0
3 years ago
Dr. Bert Vogelstein and his partners study the causes of cancer. In 2017, they published a study of 32 types of cancer. The stud
Kitty [74]

Answer:

Error or mistakes during DNA replication is accountable for two-thirds or 66% of the cancer cases. These random and unpredictable errors called mutations that occur during the division of a cell as an error in copying of DNA.

DNA replication has three main steps:

Opening and separation of DNA strands of a helix - carried by an enzyme known as helicase that breaks the hydrogen bonds between nitrogenous bases of the helix of DNA.

The priming of the template strand - DNA primase helps RNA primers to bind to both strands at 3' end as soon as it separated

strat assembling the segments of new DNA on strands called elongation of the strands with help DNA polymerase I and after forming new strands the termination of the replication.

Errors or mistakes can occasionally take place if DNA polymerase inserts a wrong base during elongation of the strands.

7 0
3 years ago
What is the chemical reaction in the equation NaCl (s) → Na + (aq) + Cl - (aq)
kondor19780726 [428]

Answer:

exothermic reaction

when compounds dissolve they produce heat hence a chemical reaction that produces heat is known as endothermic reaction.

6 0
3 years ago
Which of these foods contains the
Assoli18 [71]

Answer:

Hi I think that its oats.

Explanation: It has fiber and vitamin c

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following samples will have the lowest pressure if they are all at the same temperature and in identical containers
    8·1 answer
  • The uppermost layer of the atmosphere
    8·2 answers
  • When hydrogen and oxygen combine to form water, which term is used to describe the water? A. product B. reactant C. catalyst D.
    7·2 answers
  • What would make the risk of these cancers even worse for someone who drinks alcohol?
    10·1 answer
  • The vapor pressure of chlorine dioxide, ClO2, is 155 Torr of at -22.75 °C and 485 Torr at 0.00 °C.
    5·1 answer
  • Calculate the theoretical density (in g/cm3) of copper (Cu), given that it has the FCC structure. The atomic weight of Cu is 63.
    11·1 answer
  • 15 points!
    13·1 answer
  • What are two ways condensation differs from boiling?
    15·1 answer
  • Use the chart to determine which pair of atoms has the greatest difference in electronegativity.
    5·2 answers
  • The component that dissolves the other component is called the
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!