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
mr Goodwill [35]
3 years ago
12

when 200. milliliters of an HNO3 solution is exactly neutralized by 250 milliliters of a 0.50 M solution of KOH, what is the con

centration of HNO3
Chemistry
1 answer:
marishachu [46]3 years ago
7 0

Answer:

Molarity HNO₃ Soln = 0.625M

Explanation:

Molarity of Acid Soln X Volume Acid Soln = Molarity of Base Soln x Volume of Base Soln

Molarity HNO₃ Soln x 200-ml HNO₃ Soln = 0.50M KOH Soln x 250-ml KOH Soln

Molarity HNO₃ Soln = (0.50M)(250ml)/(200ml) = 0.625M

You might be interested in
True or False: If the chagned offspring are more likely to endure (survive), than that traits is more likely to spread to future
Ivenika [448]
Answer: i think it is true.
7 0
3 years ago
Help please asap!!
In-s [12.5K]
<span>Saturated hydrocarbon cannot bond with compounds anymore, where as unsaturated hydrocarbons can bond, as they contain double or triple bonds. When they bond, the double and triple bonds break and new separate single bonds are formed with hydrogens or any other external compounds</span>
8 0
3 years ago
The change of state from a gas to a liquid is called?
evablogger [386]
<span>This change is called BOILING.</span>
8 0
3 years ago
Read 2 more answers
An important reaction in the formation of photochemical smog is the photodissociation of NO2: NO2 + hv &gt;&gt;&gt; NO(g) + O(g)
vaieri [72.5K]

Explanation:

NO_2 + hv\rightarrow NO(g) + O(g)

The maximum wavelength of light that can cause this reaction is 420 nm.

a) The wavelength given lies in the range of visible light range that is from 400 nano meters to 700 nano meters.

The light with wavelength of 420 nm is found in the range of visible light.

b)The maximum strength of a bond :

E=\frac{h\times c}{\lambda}

where,

E = energy of photon = Energy required to break single molecule of nitrogen dioxide

h = Planck's constant = 6.626\times 10^{-34}Js

c = speed of light = 3\times 10^8m/s

\lambda = wavelength = 420 nm=420\times 10^{-9}m

E=\frac{6.626\times 10^{-34}Js\times 3\times 10^8 m/s}{420\times 10^{-9}m}

E=4.733\times 10^{-19} J

Energy required to break 1 mole of nitrogen dioxide molecules:

= E\times N_A=4.733\times 10^{-19} J\times 6.022\times 10^{23} mol^{-1}

=285,012.66 J/mol=285.13 kJ/mol

(1 J = 0.001 kJ )

285.13 is the maximum strength of a bond, in kJ/mol, that can be broken by absorption of a photon of 420-nm light.

c) the photodissociation reaction showing Lewis-dot structures is given in an image attached.

6 0
3 years ago
Is ammonia a compound or an element?
shutvik [7]
A ammonia is a compound
8 0
3 years ago
Other questions:
  • 26)Predict the products of the following chemical reaction
    5·1 answer
  • Butane (C4 H10(g), mc031-1.jpgHf = –125.6 kJ/mol) reacts with oxygen to produce carbon dioxide (CO2 , mc031-2.jpgHf = –393.5 kJ/
    7·1 answer
  • Give the chemical formulas for (a) silicon tetrabromide, (b) disulfur dichloride, (c) diphosphorus hexaoxide.
    5·1 answer
  • What is Hess‘s law please help
    7·1 answer
  • how many grams of silver medal could be recovered from a reaction of 50 g silver nitrate and copper metal
    14·1 answer
  • Just answer this please here’s a photo these are my last points
    15·1 answer
  • Help!!!!
    15·1 answer
  • I NEED HELP PLEEEEAASSEEEEE
    7·1 answer
  • Why does it take less
    15·1 answer
  • A solution is 12.5% Na3PO, by mass. How many grams of Na3PO4
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!