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
motikmotik
3 years ago
5

Find the molar mass of Ca(NO3)2

Chemistry
2 answers:
spayn [35]3 years ago
6 0

 The  molar  mass  of  Ca(NO₃)2  is 164 g/mol


<u><em> Explanation</em></u>

Ca(NO₃)2   is  made  up of   Ca  , N  and  O  elements

Therefore the  molar mass  of Ca(NO₃)2   =  molar  mass  of Ca +  molar  mass  of N +molar mass of O


from periodic table the molar mass of  Ca is 40 g/mol

for  N  =  14 g/ mol

 for  O = 16 g/mol. since they are  3 atoms  of O in  Ca(NO₃)2  the  molar mass = 16  x3 = 48  g/mol


The molar  mass   of Ca(NO₃)2 = 40 g/mo  + [(14  g/mol + 48 g/mol) 2] =164g/mol


sdas [7]3 years ago
6 0

Answer:164.10 to be exact

Explanation:

You might be interested in
HCl (hydrochloric acid) is a strong acid; its ions completely dissociate when placed in solution. HF (hydrofluoric acid) is a we
FinnZ [79.3K]

Answer:

The stronger electrolyte is the HCl

Explanation:

Stronger electrolyte are the ones, that in water, completely dissociates.

HCl(aq) → H⁺(aq) + Cl⁻(aq)

HCl(aq) + H₂O(l) → H₃O⁺ (aq)  +  Cl⁻(aq)

Both are acids, they bring protons to medium but the hydrochloric completely dissociates.

HF (aq) + H₂O(l) ⇄  H₃O⁺(aq) +  F⁻(aq)           Ka

In the dissociation of weak electrolytes, they ionize but at the same time they bond again, so the reaction is always kept in equilibrium.

5 0
3 years ago
What is a living compound that contains hydrogen?
jenyasd209 [6]
Humans are a living compound that contains hydrogen 
3 0
4 years ago
0.030 moles of a weak acid, HA, was dissolved in 2.0 L of water to form a solution. At equilibrium, the concentration of HA was
nikitadnepr [17]

Answer: The value of k_{a} for the weak acid is 3.07 \times 10^{-4}.

Explanation:

First, we will calculate the molarity of HA as follows.

     [HA] = \frac{\text{no. of moles}}{\text{volume}}

             = \frac{0.03 mol}{2 L}

             = 0.015

At equilibrium,

              HA + H_{2}O \rightleftharpoons H_{3}O^{+} + A^{-}

Initial:   0.015                  0          0

Change:  -x                     +x         +x

Equilibm: 0.015 - x          x           x

It is given that, at equilibrium

          [HA] = 0.015 - x = 0.013

             - x = 0.013 - 0.015

                  = 0.002

Now, expression for k_{a} of this reaction is as follows.

          k_{a} = \frac{[A^{-}][H_{3}O^{+}]}{[HA]}

                      = \frac{x^{2}}{[HA]}

                      = \frac{(0.002)^{2}}{0.013}

                      = 3.07 \times 10^{-4}

Thus, we can conclude that the value of k_{a} for the weak acid is 3.07 \times 10^{-4}.

4 0
3 years ago
19003.9 ul= how many ml​
LenaWriter [7]
There is 1,000 uL in one mL, so that would mean to move the decimal point 3 times to the left
Final answer: 19.0039 ML
8 0
4 years ago
Why did engineers need to design a sunshade for Mercury Messenger?
zloy xaker [14]
The answer is so it didn't burn.
8 0
3 years ago
Read 2 more answers
Other questions:
  • When did the first particles of matter originate
    10·1 answer
  • Compounds X and Y are both C6H13Cl compounds formed in the radical chlorination of 3-methylpentane. Both X and Y undergo base-pr
    7·1 answer
  • he solution is said to be an ideal solution, only when the intermolecular forces of attraction between A-A, B- B and A- B are ne
    11·1 answer
  • Name two things in the lab that are for safety
    14·1 answer
  • Are substances that taste bitter and feel slippery to the skin
    9·1 answer
  • Write with example of any three changes in the state of matter in daily life​​
    13·1 answer
  • Determine the number of moles of C in each sample
    8·1 answer
  • HELPP please I’ll mark you as brainlister it’s 100 points
    7·1 answer
  • A rectangle has a volume of 395cm3. It has a mass of 147g. What is its density? *
    5·1 answer
  • C12H22O11 is an example of a(n):
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!