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
-BARSIC- [3]
3 years ago
14

A 0.0100 mol sample of Ca(OH)2 requires 50.00 mL of aqueous HCl for neutralization according to the reaction below. What is the

concentration of the HCl? Equation: Ca(OH)2(s) + 2HCl(aq) → CaCl2(aq) + H2O(l)
Chemistry
1 answer:
harkovskaia [24]3 years ago
6 0

Answer:Cm=o,4 (Mol/l)

Explanation:

Ca(OH)2(s) + 2HCl(aq) → CaCl2(aq) + H2O(l)

0,01                 0,02

CM=n/V

You might be interested in
Having done the experiment, explain briefly how the mass of zinc not equal the mass of lead gained (hint: the periodic table)
masya89 [10]

Answer:

Due to the difference in the relative atomic masses and therefore, the molecular masses of Zn and Pb, one mole of Zn is about 3.2 times lighter than one mole of Pb

Explanation:

From the periodic table, we have;

The atomic number of zinc, Zn = 30

The atomic mass of zinc, Zn = 65.38 amu

The molar mass of zinc, Zn = 65.38 g/mol

The atomic number of lead, Pb = 82

The atomic mass of lead, Pb = 207.2 amu

The molar mass of lead, Pb = 207.2 g/mol

Therefore, whereby equal number of moles of Zn is lost and Pb is gained, we have;

Mass of 1 mole of Zn = 65.38 grams

Therefore, 1 gram of Zn = 1/65.38 moles = 0.0153 moles

0.12 grams of Zn = 0.12×0.0153 = 0.00184 moles of Zn

Given that equal number of moles of Zn and Pb are involved in the reaction, the number of moles of Pb gained = 0.00184 moles

The mass of Pb gained = Number of moles of Pb gained × Molar mass of Pb

The mass of Pb gained = 0.00184 × 207.2 = 0.38 g ≈ 0.4 g.

Amount of Pb gained = 0.43 g ≈ 0.4 g

4 0
3 years ago
10. A water molecule is made up of one oxygen atom and two hydrogen atoms. Why is water
Norma-Jean [14]
Its either C or D I’m stuck on this.
6 0
3 years ago
Read 2 more answers
What is the name of this compound?
Mashcka [7]

Answer:

B. ethylamine.

Explanation:

  • Since the compound contains NH₂, it is an amine compound.
  • The alkyl group C₂H₅- contains 2 C atoms (ethyl group).

<em>So, the compound is ethylamine.</em>

<em />

3 0
3 years ago
Read 2 more answers
Where, approximately, is the negative pole on each of these molecules?
Leni [432]

Orbital shell notation of fluorine is 2. 7 while that of oxygen s 2. 6. This means that these elements (that follow each other in the periodic table) will have high electronegativity in molecules due to their high atomic number (which causes them to strongly attract electron orbital shell closer to their nucleus). NB: Atomic number of a peroid increased from left to right of the periodic table.

Therefore, in the first molecule, the negative dipole would most likely be located between the F atoms In the second molecule the negative molecule would be most likely located in the between the O and F atoms.

5 0
3 years ago
Read 2 more answers
Which of the following statements is true about an endergonic reaction? ∆G is positive ∆G is negative ∆S is negative
Mazyrski [523]
The answer is the first option, <span>∆G is positive.</span><span> </span><span>Endergonic reaction is a chemical reaction where the Gibbs free of energy is positive and there is abosrption of energy. It is a nonspontaneous reaction or unfavorable reaction.</span>
8 0
3 years ago
Other questions:
  • The halogens like to bond with what other group?
    7·1 answer
  • Why would two poles of different magnets attract each other?
    6·1 answer
  • What type of van der Waals force exists between molecules of oxygen?
    14·1 answer
  • Which best describes a compound such as sodium chloride
    14·1 answer
  • Reasons why convection is responsible for the uneven heating of the air in the atmosphere
    6·1 answer
  • Is cl metal nonmetal or metalloid<br> or metalloid
    14·1 answer
  • Carbon monoxide and chlorine gas react to form phosgene:
    13·1 answer
  • The concentration of citric acid (H3C6H5O7) in citric fruits ranges from 0.005 M to 0.30 M. Consider a 80.1 mL sample of pure li
    6·1 answer
  • How many moles of Fe2+ are there in a 2.0g sample that is 80% by mass of FeCl2?
    9·1 answer
  • A student obtains a beaker containing a solution that is determined to have a hydrogen ion
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!