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
Dominik [7]
3 years ago
15

What is the percent composition ca(oh)2

Chemistry
1 answer:
Salsk061 [2.6K]3 years ago
4 0

Answer:  43.188%

Explanation:

You might be interested in
You'll be given 100 points if you answer this question!!!!!!!!!!!!
storchak [24]

Answer:conducts ,steel, polystyrene, thermal insulation

Explanation:

5 0
3 years ago
How many moles are in a 12.0 g sample of NiC12
Nady [450]

Answer:

0.17 moles

Explanation:

In the elements of the periodic table, the atomic mass = molar mass. <u>Ex:</u> Atomic mass of Carbon is 12.01 amu which means molar mass of Carbon is also 12.01g/mol.

In order to find the # of moles in a 12 g sample of NiC-12, we will need to multiply the number of each atom by its molar mass and then add the masses of both Nickel and C-12 found in the periodic table:

  • Molar Mass of Ni (Nickel): 58.69 g/mol
  • Molar Mass of C (Carbon): 12.01 g/mol

Since there's just one atom of both Carbon and Nickel, we just add up the masses to find the molar mass of the whole compound of NiC-12.

  • 58.69 g/mol of Nickel + 12.01 g/mol of Carbon = 70.7 g/mol of NiC-12

There's 12g of NiC-12, which is less than the molar mass of NiC-12, so the number of moles should be less than 1. In order to find the # of moles in NiC-12, we need to do some dimensional analysis:

  • 12g NiC-12 (1 mol of NiC-12/70.7g NiC-12) = 0.17 mol of NiC-12
  • The grams cancel, leaving us with moles of NiC-12, so the answer is 0.17 moles of NiC-12 in a 12 g sample.

<em>P.S. C-12 or C12 just means that the Carbon atom has an atomic mass of 12amu and a molar mass of 12g/mol, or just regular carbon.</em>

5 0
3 years ago
How many significant figures are in 0.0233?
viva [34]

Answer:

there are 3 significant figures

Explanation:

do not count the first 2 zeros. only the nimbers after the zero

7 0
3 years ago
How are the input and output forces of the parts of a complex machine related?
Nataliya [291]
For machines such as a rake the output force is less than the input force. If the input force of the rake is 10 newtons and the output force is 5 Newtons mechanical advantage is .5
4 0
3 years ago
Moving force of air flows from areas of high pressure to areas of low pressure true or false
Andru [333]
Air does move from high to low pressure so true
7 0
3 years ago
Read 2 more answers
Other questions:
  • I WILL RATE BRAINLIEST!!
    12·2 answers
  • A pulse with an amplitude of 3+ would be considered:
    7·1 answer
  • My question is what is a cell?
    7·1 answer
  • Which place on earth would be likely to have the most humidity due to water vapor in the atmosphere? Moscow, Russia Toronto, Can
    15·1 answer
  • 13 protons , 14 neutrons, and 10 electrons what is the overall charge
    12·2 answers
  • The shortest and direction of an object change in position ​
    6·1 answer
  • Describe how you would prepare your assigned ester from a carboxylic acid and an alcohol. You do not need to include a detailed
    11·1 answer
  • Explain the properties of acids
    5·1 answer
  • Anyone have any ideas on what i should draw for my art project please let me know
    12·2 answers
  • What is gravitational energy? Please help.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!