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
Marta_Voda [28]
3 years ago
15

A student neutralized 16.4 milliliters of HCl by adding 12.7 milliliters of 0.620 M KOH. What was the molarity of the HCl acid?

Chemistry
1 answer:
Katen [24]3 years ago
4 0
V ( HCl ) = 16.4 mL / 1000 => 0.0164 L

M( HCl) = ?

V( KOH) = 12.7 mL / 1000 => 0.0127 L

M(KOH) = 0.620 M

Number of moles KOH:

n = M x V

n = 0.620 x 0.0127

n = 0.007874 moles of KOH

number of moles HCl :

<span>HCl + KOH = H2O + KCl
</span>
1 mole HCl ------ 1 mole KOH
<span>? mole HCl--------0.007874 moles KOH
</span>
moles HCl = 0.007874 * 1 / 1

= 0.007874 moles of HCl

M = n / V

M = 0.007874 / <span>0.0164

</span>= 0.480 M

Answer (2)

hope this helps!

You might be interested in
The net ionic equation for the reaction between aqueous sulfuric acid and aqueous sodium hydroxide is ________.
Dennis_Churaev [7]
H₂SO₄(aq) + 2NaOH(aq) → Na₂SO₄(aq) + 2H₂O(l)

2H⁺ + SO₄²⁻ + 2Na⁺ + 2OH⁻ → 2Na⁺ + SO₄²⁻ + 2H₂O

H⁺ + OH⁻ → H₂O (the net ionic equation)
5 0
3 years ago
Mass=35g<br> density=5 g/cm3<br> what is the volume?
sladkih [1.3K]

Answer:

You would divide the mass by the density. The volume would be 7 cm^3.

3 0
3 years ago
Read 2 more answers
How much heat is absorbed if 75.4 g of CO2 reacts?
iris [78.8K]

Answer:

6x

Explanation:

7 0
3 years ago
Read 2 more answers
How many moles of o2 are required for the complete reaction of 54.7 g of c2h4 to form co2 and h2o?
Hunter-Best [27]
The balanced chemical equation that illustrates this reaction is:
<span>C2H4 + 3O2 --> 2CO2 + 2H2O 
</span>
From the periodic table:
mass of carbon = 12 grams
mass of hydrogen = 1 gram
Therefore:
molar mass of C2H4 = 12(2) + 4(1) = 24 + 4 = 28 grams

number of moles = mass / molar mass
number of moles of C2H4 = 54.7 / 28 = 1.95 moles

From the balanced equation above:
3 moles of oxygen are required to react with one mole of C2H4, therefore, to know the number of moles required to react with 1.95 moles of C2H4, all you have to do is cross multiplication as follows:
number of oxygen moles = (1.95*3) / 1 = 5.85 moles
4 0
2 years ago
Read 2 more answers
in physics class Annie is designing a small circuit that can operate a mixer identify the device she should use in the circuit a
Mandarinka [93]
I don’t see any of the possible answers
3 0
3 years ago
Other questions:
  • What is the mass of sodium in 3 moles of sodium chloride
    14·1 answer
  • 2. What is the mass of 16.3 L of helium gas?
    15·2 answers
  • Which organism has a nerve net that allows it to respond to a stimulus in a coordinated way
    11·1 answer
  • What are the two main types of energy?
    11·2 answers
  • how do you know the state of a compound when writing out the equation. WILL MARK BRAINLIEST PLEASE HELP!!
    10·1 answer
  • Gold(ill) hydroxide is used in medicine, porcelain making, and gold plating. It is quite insoluble in aqueous solution. Which of
    6·1 answer
  • ANSWER ASAP thanks
    14·2 answers
  • if you were conducting an experiment with pepsin which has an optimal enzymatic actigity at ph 2.3, wat buffer would be the best
    10·2 answers
  • Find the percentage compositions<br> CaCl2<br> Ca:<br> CI:
    7·1 answer
  • In the image above, the region labeled “ A “ is called the . . .
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!