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
IgorC [24]
3 years ago
14

An acid (such as H2SO4) and a base (such as NaOH) are mixed together during a titration. The equivalence point is reached when _

____.
the pH reaches its maximum value

the number of moles of H+ ions equals the number of moles of OH– ions

the pH reaches its minimum value

the number of moles of acid equals the number of moles of base
Chemistry
2 answers:
dolphi86 [110]3 years ago
6 0
The answer is "<span>the number of moles of H+ ions equals the number of moles of OH– ions "</span>
raketka [301]3 years ago
4 0

Answer:

the number of moles of H+ ions equals the number of moles of OH– ions

Explanation:

The equivalence point, is the point at which the acid has completely reacted with the base.

In other words, the H+ ions from the acid have completed reacted with the OH- ions from the base, and in order to complete the reaction the moles of OH- must be equal to the number of moles of H+ in the inicial solution.

This is different to the moles of acid or base, because in this case we have two moles of H+ per mol of acid (H2SO4)

You might be interested in
How many milliliters of water will it take to fill a 2 L bottle that already contains 1.87 L of water?
Aloiza [94]

Answer:

0.00013

Explanation:

I'm pretty sure. I first subtracted 1.87 from 2. I got 0.13. The conversion from mL to L is 0.001. I multiplied 0.13 and 0.001 and got <u>0.00013 mL.</u>

6 0
3 years ago
If the empirical formula of a compound is CH2, which of the following could be a possible molecular formula for this
DiKsa [7]

Answer:

C2H2

Explanation:

8 0
3 years ago
How many particles are present in 12.47 grams of NaCl
liq [111]

Answer:

1.26*10²³ particles are present in 12.47 grams of NaCl

Explanation:

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023 * 10²³ particles per mole. The Avogadro number applies to any substance.

So, first of all you must know the amount of moles that represent 12.47 grams of NaCl. For that it is necessary to know the molar mass.

You know:

  • Na: 23 g/mole
  • Cl: 35.45 g/mole

So the molar mass of NaCl is: 23 g/mole + 35.45 g/mole= 58.45 g/mole

Now you apply a rule of three as follows: if 58.45 grams are present in 1 mole of NaCl, 12.47 grams in how many moles will they be?

moles=\frac{12.47 grams*1 mole}{58.45 grams}

moles= 0.21

You apply a rule of three again, knowing Avogadro's number: if in 1 mole of NaCl there are 6,023 * 10²³ particles, in 0.21 moles how many particles are there?

number of particles=\frac{0.21 moles*6.023*10^{23} }{1 mole}

number of particles= 1.26*10²³

<u><em>1.26*10²³ particles are present in 12.47 grams of NaCl</em></u>

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

5 0
3 years ago
. Hemoglobin (Hb) and oxygen gas form a complex (HbO2) that carries oxygen throughout the human body. Unfortunately, carbon mono
sp2606 [1]

Answer:

1. Removing them to an area of fresh air. This helps to prevents further poisoning by the carbon monoxide and increase the amount of oxygen entering into the body. This will help to reduce the concentration of carbon monoxide binding oxygen

2. Administering pure oxygen goes a long way to enhance ventilation and increase the oxygen saturation to 100%. This will help to overcome the effect of the carbon monoxide and promote more hemoglobin binding

5 0
3 years ago
Electrons are capable of emmiting engery in the form of light at very narrow ranges of wavelengths. these wavelengths can be mea
sukhopar [10]
C) energy level

Looking at quantum mechanics, we see that electrons exist at certain energy levels. When they get excited, they’ll jump from one energy state to a higher energy state and down. We can the. Look at the color it admits and determine what the energy level is.
5 0
3 years ago
Other questions:
  • Shiny; ductile; solid at room temperature which of the elements best fits the description? hint: look at your periodic table.
    11·1 answer
  • How can an abiotic factor affect a biotic factor
    13·1 answer
  • What is the volume in liters of 321 g of liquid with a density of 0.84 g/mL
    6·1 answer
  • A horizontal row of the periodic table is usually referred to as a ____________
    11·2 answers
  • In a solution, the solvent is...
    5·2 answers
  • Which lists the elements in order from least conductive to most conductive?
    15·2 answers
  • The flow of matter through the carbon and nitrogen cycle can be disrupted! The video clip explained an example in both the carbo
    13·1 answer
  • What is a tornado and how does it form? ( Don't search the answer )
    6·2 answers
  • Which best describes why animals need the energy in food?
    12·2 answers
  • WHAT ARE SOME POSSIBLE CONSEQUENCES IF A HUMAN BODY DOES NOT MAINTAIN<br> HOMEOSTASIS
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!