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
Cloud [144]
3 years ago
5

What is the molar mass of Ca(NO3)2?

Chemistry
2 answers:
Vilka [71]3 years ago
4 0

Answer:

C) 164.1 g/mol

Explanation:

First calculate the molecular mass of Ca(NO3)2

Atomic Mass of Calcium (Ca) = 40.078 amu

Atomic Mass of Nitrogen (N) = 14.006 amu

Atomic Mass of Oxygen (N) = 15.99 amu

Where amu is Atomic Mass Unit and it is unit for atomic mass or molecular mass of an atom or molecule respectively.

Now remember to take atomic mass of Oxygen thrice because its three atoms are present and molecular mass of NO3 twice because you can see that its two molecules are attached with Calcium (Ca)

Molecular mass of Ca(NO2)3 = 40.078 + (14.006 + 15.99 x 3) x 2

                                                 = 40.078 + (14.006 + 47.97) x 2

                                                 = 40.078 + 123.95

                                                  = 164.03 amu

Now one mole can be defined as the molecular mass of a substance in grams which means molar mass of Ca(NO3)2 is 164.03 grams which is approximately eqaul to 164.1 grams.

Since it is the mass of one mole of Ca(NO3)2, it can be represented as:

164.1 g/mole

Valentin [98]3 years ago
3 0
The answer to the molar mass of Ca(NO3)2 is gonna be C. 164.1 g/mol



You might be interested in
A saturated solution of baso4 has a concentration of 0.5mol/l. a 55ml sample is taken by you. what is the mass of baso4 in the s
SIZIF [17.4K]

Answer:

6.4 g BaSO₄

Explanation:

You have been given the molarity and the volume of the solution. To find the mass of the solution, you need to (1) find the moles BaSO₄ (via the molarity ratio) and then (2) convert moles BaSO₄ to grams BaSO₄ (via the molar mass). It is important to arrange the conversions in a way that allows for the cancellation of units (the desired unit should be in the numerator). The final answer should have 2 sig figs to reflect the sig figs of the given values.

Molarity (mol/L) = moles / volume (L)

(Step 1)

55 mL / 1,000 = 0.055 L

Molarity = moles / volume                             <----- Molarity ratio

0.5 (mol/L) = moles / 0.055 L                        <----- Insert values

0.0275 = moles                                             <----- Multiply both sides by 0.055

(Step 2)

Molar Mass (BaSO₄): 137.33 g/mol + 32.065 g/mol + 4(15.998 g/mol)

Molar Mass (BaSO₄): 233.387 g/mol

0.0275 moles BaSO₄          233.387 g
---------------------------------  x  -------------------  =  6.4 g BaSO₄
                                                1 mole

6 0
2 years ago
Which units represent destiny? Select all that apply.
ozzi
The basic units for density is \frac{mass}{volume} and any get of units that has those units in the proper place can be considered a density unit.  The ones that has those specifically are A, B, E and F
7 0
3 years ago
Read 2 more answers
Complete the nuclear equation
allsm [11]
In order to solve this question, we must apply the conservation of mass. The total number of nucleons (upper number) and protons (lower number) must be equal before and after the decay. The new nucleon number is
218 - 4
= 214
And new proton number is
84 - 2
= 82
Next, we must identify which element has the proton number 82. That would be lead, Pb.
Therefore, the answer is 
5. ²¹⁴Pb₈₂
5 0
3 years ago
Rank the following atoms by number of valence electrons. Rank from most to fewest valence electrons. To rank items as equivalent
Fed [463]

To count the number of valence electrons we look at the electronic configuration and add the electrons form the electronic shell with the highest principal quantum number.

Rb: [Kr] 5s¹ - 1 valence electron

Xe: [Kr] 5s² 4d¹⁰ 5p⁶ - 8 valence electrons

Sb: [Kr] 5s² 4d¹⁰ 5p³ - 5 valence electrons

I:    [Kr] 5s² 4d¹⁰ 5p⁵ - 7 valence electrons

In:  [Kr] 5s² 4d¹⁰ 5p¹ - 3 valence electrons

Rank from most to fewest valence electrons:

Xe > I > Sb > In > Rb

6 0
3 years ago
Read 2 more answers
the smell spreads immediately after you burn agarbatti in this example what is your condition about intermolecular force
Sloan [31]
Intermolecular force for solids is high. Whereas low in gases. The smell of agarbatti spreads immediately because the molecules of air diffuses very fastly.
4 0
2 years ago
Read 2 more answers
Other questions:
  • Why does it take a large truck longer to stop than a compact car, even though both are traveling at the same velocity?
    9·2 answers
  • Which step of the scientific method involves obtaining resources for your question
    12·1 answer
  • The pH scale from 7 to 14 is for a(n) What .
    5·1 answer
  • The work function for metallic potassium is 2.3 eV. Calculate the velocity in km/s for electrons ejected from a metallic potassi
    6·1 answer
  • Draw the Lewis structure of NCl3NCl3 . Include lone pairs. Select Draw Rings More Erase Select Draw Rings More Erase Select Draw
    12·1 answer
  • What is the amount of moles in 67 g of C​
    9·1 answer
  • .........................helpplsplspls.....................
    7·2 answers
  • Answer the following questions using the results of the following Unknown Solution Analysis:
    14·1 answer
  • A hot air ballon contains 270L of helium at 24C and 845 mmHg. WHat will be the volume of the ballon at -50c and pressure of 0.73
    11·1 answer
  • What is the protons and where are they are located and their charge?​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!