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
charle [14.2K]
3 years ago
5

A student prepares a solution by combining 100 mL of 0.30 M HNO2(aq) and 100 mL of 0.30 M KNO2(a). Which of the following equati

ons represents the reaction that best helps to explain why adding a few drops of 1.0 M HCI(aą) does not significantly change the pH of the solution? (A) K*(aq) + CI (aq) ---------------->KCl(s)(B) HNO2(aą) ----------------->H'(aą) + NO2 (aq) (C) H (aq) + OH (aq) ----------------->H2O(l)
Chemistry
1 answer:
katrin2010 [14]3 years ago
7 0

Answer:

B

Explanation:

This creates a buffer solution meaning it will just neutralize out and does not change the PH massively.

You might be interested in
2.Choose the correct order of the layers of the Earth from the outermost to the innermost layer
Artyom0805 [142]
A and C are your anwser
4 0
3 years ago
The reaction 2a + 3b → c is first order with respect to a and
daser333 [38]

Answer:

6.30 M⁻¹s⁻¹.

Explanation:

As the reaction is first order with respect to a and b.

<em>The rate of the reaction = k [a][b],</em>

where, k is the rate constant of the reaction.

The rate of the reaction = 2.65 × 10⁻⁴ M/s,

[a] = 1.60 × 10⁻² M,

[b] = 2.67 × 10⁻³ M.

∴ k = (the rate of the reaction / [a][b]) = (2.65 × 10⁻⁴ M/s) / (1.60 × 10⁻² M)( 2.67 × 10⁻³ M) = 6.30 M⁻¹s⁻¹.

7 0
3 years ago
The element chlorine (Cl) has 17 protons and 17 electrons. What happens to an atom of chlorine (Cl) if it gains an electron?
Vesna [10]

Answer:

It becomes negatively charged

Explanation:

An atom of chlorine having equal number of protons and electrons is neutral. The protons are the positively charged particles located in the nucleus of an atom. Electrons are negatively charged particles located outside the nucleus.

When the number of electrons and protons are the same, such an atom is neutral.

If the number of protons is more, the atom becomes positively charged.

In this case, the atom adds or gains an electron making the number of electrons to go from 17 to 18. This is more than the number of protons which are 17 by 1. The charge on the atom is therefore -1.

4 0
3 years ago
Read 2 more answers
Air has weight due to
Sergeu [11.5K]

Answer:

mass

Explanation:

How much does air weigh? It might not seem like it, but air has weight. Anything with mass has weight, and we know air has mass because (for example) we can feel it when the wind blows. The total weight of the atmosphere exerts a pressure of about 14.7 pounds per square inch at sea level.

-weatherstreet.com

7 0
3 years ago
A mixture of 0.600 mol of bromine and 1.600 mol of iodine is placed into a rigid 1.000-L container at 350°C.
nata0808 [166]

The equilibrium constant for this reaction at 350°C is determined as 5.85.

<h3>Concentration of each component</h3>

concentration of bromine, C(Br) = 0.6 mol/1 = 0.6

concentration of iodine, C(I) = 1.6 mol/1 = 1.6

<h3>Create an ICE table</h3><h3>What is ICE table?</h3>

An ICE table is a tabular system of keeping track of changing concentrations in an equilibrium reaction.

ICE is an abbreviation that stands for initial, change, equilibrium.

Create ICE table for the reactants and products formed;

      Br2(g)   +     I2(g)    ↔     2IBr(g)

I     0.6              1.6                 0

C    -1.19            -1.19               1.19

E    0.6 - 1.19      1.6  - 1.19       1.19

E = -0.59           0.41                1.19

<h3>Equilibrium constant </h3>

The equilibrium constant is calculated as follows;

KC = [IBr]²/[Br][I]

KC = (1.19²) / (0.59 x 0.41)

KC = 5.85

Thus, the equilibrium constant for this reaction at 350°C is determined as 5.85.

Learn more about equilibrium constant here: brainly.com/question/19340344

#SPJ1

4 0
2 years ago
Other questions:
  • Compare and contrast the shapes of different cloud types
    15·1 answer
  • PLEASE HELP, 5 STARS, 35 POINTS + PRIZE The reaction C4H8(g)⟶2C2H4(g) has an activation energy of 262 kJ/mol. At 600.0 K, the ra
    15·1 answer
  • What are the three main forms of energy
    12·2 answers
  • Affinity chromatography is used to purify a protein of interest by capturing it on Select one:
    7·1 answer
  • How many mL are 2.3 mol of CO2 at STP?
    15·2 answers
  • Which process represents one chemical change and one physical change
    9·1 answer
  • Give the half-equation for the reaction at the anode, during
    10·1 answer
  • Examine the given reaction. NH4NO3(s) → NH4+(aq) + NO3–(aq) ΔH° = 25.45 kJ/mol ΔS° = 108.7 J/mol·K Which of the given is correct
    6·1 answer
  • What do you think happens when you add an emulsifier to oil and vinegar?
    15·2 answers
  • In self heating cans, the chemicals in two compartments react with each other and forms……..
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!