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
artcher [175]
3 years ago
10

Suppose the mole number of Ca2+ ions in a 50 mL water sample is quantified as 1.5 × 10−5 mol. What is the concentration of Ca2+

ions in the water sample in ppm CaCO3?
Chemistry
2 answers:
mote1985 [20]3 years ago
8 0

Answer : The concentration of Ca^{2+} ions in the water sample in ppm is, 12000 ppm

Solution : Given,

Moles of calcium = 1.5\times 10^{-5}moles

Molar mass of calcium = 40 g/mole

Volume of solution = 50 ml

First we have to calculate the mass of calcium.

\text{Mass of calcium}=\text{Moles of calcium}\times \text{Molar mass of calcium}=(1.5\times 10^{-5}moles)\times (40g/mole)=60\times 10^{-5}g=6000mg

(1 g = 1000 mg)

Now we have to calculate the concentration of calcium.

\text{Concentration of calcium}=\frac{\text{Mass of calcium}\times 1000}{\text{Volume of solution}}=\frac{6000mg\times 1000}{50ml}=12000mg/L=12000ppm

(1 ppm = 1 mg/L)

Therefore, the concentration of Ca^{2+} ions in the water sample in ppm is, 12000 ppm

Anna11 [10]3 years ago
5 0
\frac{1.5x 10^{-5} mol  Ca^{2+}}{50ml}  ( \frac{1 mol CaC O_{3} }{1 mol  Ca^{2+} } )( \frac{100,000 ppm}{1 molCaC O_{3}/L } ) \\ =0.0300234
You might be interested in
Que es la lluvia acida?​
givi [52]

Answer:

sour

Explanation:

8 0
3 years ago
The hammer, anvil, and stirrup are all bones found in the ear.
AfilCa [17]

Answer: Hammer, anvil and stirrup are small bones in the ear behind ear drum and before cochlea. These bones helps in transfering the vibrations from ear drum to the cochlea which is further passed to auditory nerve and then to brain

Explanation:

4 0
3 years ago
Substance in mixtures do not change chemically. True or false
AnnZ [28]

Answer:

find the answer elsewhere

Explanation:

8 0
3 years ago
15. Which compounds are reactants in the process of cellular respiration?
scoundrel [369]

Answer: the correct answer would be the last option, C6H12O6 and O2

Explanation:

5 0
3 years ago
How many moles of nacl are required to make 500. 0 ml of a 0. 1 m solution of nacl?.
Illusion [34]

Answer:

Therefore 500 ml of solution have 0.25 mol of NaCl .. = 14.61 g (ans.)

Explanation:

7 0
2 years ago
Other questions:
  • What is a tube like structure of neurons
    10·1 answer
  • 10.0 grams of water are heated during the preparation of a cup of coffee 1.0x 103 j of the heat are added to the water. which is
    9·1 answer
  • El átomo de oxígeno ( 8 O ), en estado fundamental, presenta:
    5·1 answer
  • Help help help help help<br> What is an action your citizens can take to prevent water waste?
    7·1 answer
  • PLSS HELPP ME i dont knowww
    6·1 answer
  • What is the difference between active transport? Which one requires energy?
    6·2 answers
  • Helppppppppppppppppppppppppp
    9·1 answer
  • An athlete can run 4 m/s. How far can she run in 3 minutes?<br>​
    12·1 answer
  • Which of the following is an example of climate?
    7·1 answer
  • Write the symbol for every chemical element that has atomic number greater than 8 and atomic mass less than 25.5 u.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!