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
siniylev [52]
3 years ago
11

The cyanide ion (CN-1) is highly toxic, but can be remediated in solution by redox reaction with the hypochlorite ion (the princ

ipal component of bleach). The balanced net ionic equation for this process is: 2 CN-1 + 5 ClO-1 + H2O ---> 5 Cl-1 + N2 + 2 HCO3 -1 A 3.5 x 106 L sample of water was found to be contaminated with cyanide ions at a concentration of 25mM. How many grams of cyanide were dissolved in the total sample?
Chemistry
1 answer:
Katena32 [7]3 years ago
8 0

Answer:

2.275x10⁶g of CN⁻¹ were dissolved in the sample

Explanation:

Molarity is defined as the ratio between moles of solute and liters of solution.

If a CN⁻¹ solution has a concentration of 25mM, there are 0.025 moles of CN⁻¹ per liter of solution.

If the sample has a colume of 3.5x10⁶L, moles of CN⁻¹ are:

3.5x10⁶L × (0.025moles / L) = <em>8.75x10⁴ moles of CN⁻¹ in the sample of water.</em>

In grams (As molar mass of CN⁻¹ is 26g/mol):

8.75x10⁴ moles CN⁻¹ × (26g / mol) = <em>2.275x10⁶g of CN⁻¹ were dissolved in the sample</em>

You might be interested in
Valence electrons<br> Fill in the blanks
IgorC [24]

Answer:

Valence electrons or outer electrons are most important as they participate in bonding. The octet rule states that atoms gain, lose, or share valence electrons to have filled energy levels.. this gives atoms a stable configuration like that of the nearest noble gas.

6 0
3 years ago
Based on the following thermodynamic data, calculate the boiling point of ethanol in degrees Celsius. Substance ΔH∘f (kJ/mol) S∘
levacccp [35]

Answer:

76.03 °C.

Explanation:

Equation:

C2H5OH(l) --> C2H5OH(g)

ΔHvaporization = ΔH(products) - ΔH (reactants)

= (-235.1 kJ/mol) - (-277.7 kK/mol)

= 42.6 kJ/mol.

ΔSvaporization = ΔS(products) - ΔS(reactants)

= 282.6 J/K.mol - 160.6 J/K.mol

= 122 J/K.mol

= 0.122 kJ/K.mol

Using gibbs free energy equation,

ΔG = ΔH - TΔS

ΔG = 0,

T = ΔH/ΔS

T = 42.6/0.122

= 349.18 K.

Coverting Kelvin to °C,

= 349.18 - 273.15

= 76.03 °C.

8 0
3 years ago
What is the molarity of a solution of 14.0 g NH4Br in enough H2O to make 150 mL of solution?
kiruha [24]
The molarity of a solution equals to the mole number of the solute/the volume of the solution. For NH4Br, we know that the mole mass is 98. So the molarity is (14/98) mol /0.15 L=0.95 mol/L.
8 0
4 years ago
Read 2 more answers
What is the molarity of a solution in which 0.732 moles of hcl are dissolved in 0.975 liters of solution?
posledela
Molarity is moles divided by liters so do .732 divided by .975 liters.
6 0
4 years ago
What is the source of energy for an earthquake
MA_775_DIABLO [31]
Seismic waves is the energy of and earthquake aka Elastic Energy
3 0
4 years ago
Read 2 more answers
Other questions:
  • The table below shows two types of electromagnetic waves and three random applications of electromagnetic waves.
    13·2 answers
  • List at least two chemical reactions that resulted in a white precipitate. For these reactions list the possible chemical name o
    7·1 answer
  • Bismuth has a density of 9.80 g/cm^ 3 . What is the of 3.74 cm ^ 3 of Bi?
    6·1 answer
  • What is the difference between mitosis and meiosis?
    7·1 answer
  • a collection of nerve fibers through which impulses travel between the central nervous system and other parts of the body
    12·1 answer
  • What happens when the threat of exposure to dirty air is reduced in a community?
    7·2 answers
  • . When 0.022189 is correctly rounded to two significant figures the number becomes
    10·1 answer
  • 5)
    11·1 answer
  • Calculate the percent composition of SrCO3
    14·1 answer
  • Discuss your opinions and attitude towards biodiversity and the health of ecosystems. Is biodiversity something that your person
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!