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
Blizzard [7]
3 years ago
11

How many moles are in 281 g of Ca(OH)2?

Chemistry
1 answer:
Natasha_Volkova [10]3 years ago
5 0

Answer:

3.79 moles

Explanation:

To convert moles to gams of a substance we need to find the molar mass of the substance. For Ca(OH)₂ th molar mass is:

1Ca = 40.08g/mol

2O = 2*16g/mol = 32g/mol

2H = 2*1.01g/mol = 2.02g/mol

The molar mass is:

40.08g/mol + 32g/mol + 2.02g/mol = <em>74.1g/mol</em>

<em />

And moles are:

281g * (1mol / 74.1g) =

<h3>3.79 moles</h3>
You might be interested in
Ozone(O3) number of atoms
spayn [35]
As the O3 suggests, the Ozone molecule is made up of 3 Oxygen atoms.
8 0
3 years ago
Sodium hydroxide dissolves in water ....
kumpel [21]

n the reaction will be Exothermic, where heat will be released. .

3 0
3 years ago
Heat and pressure deep beneath earths surface can change any rock into what?
Alik [6]

Answer:

Metamorphic

Explanation:

Because it describes as a rock framed from other rocks by the action of heat and pressure.

5 0
3 years ago
How many atoms of each element are in one molecule of this product.
anastassius [24]
I assume about 5 atoms are in one molecule of this product
7 0
4 years ago
A standard solution contained 0.8 mg/mL. A student took 2 mL of the standard solution and added 10 mL of water. What is the new/
galben [10]
To get the concentration of the second solution let us use the following formulae

C1V1=C2V2 where C1 is concentration of first solution and V1 is the volume of solution first solution. on the other hand C2 is the concentration of second solution and V2 is the volume of second solution.

therefore

0.8×2=(2+10)×C2
   1.6 =12×C2
1.6/12=C2
C2     = 0.1333mg/mL
7 0
3 years ago
Read 2 more answers
Other questions:
  • In which of the following areas is understanding chemistry NOT necessary?
    8·1 answer
  • 10 Points
    10·1 answer
  • What property of metals allows them to be shaped into wires?
    10·1 answer
  • In a chemical reaction, the elements magnesium and chlorine combined to form magnesium chloride (MgCl2). Which statement
    10·1 answer
  • A solution contains AgNO3 and Ba(NO3)2. What substance could be added to the solution to precipitate Ag ions, but leave Ba2 ions
    9·1 answer
  • Which states of matter can flow?
    10·2 answers
  • _________ is caused by deficiency of Vitamin A​
    12·2 answers
  • You have used 2.4×102 L of distilled water for a dialysis patient. How many gallons of water is that?
    13·1 answer
  • Which of the following are major influences on weather and climate?
    8·1 answer
  • Which substance is an ionic solid? A. LiCl B. HCl C. Ne D. Fe
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!