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
Anettt [7]
3 years ago
15

Water in contact with air is acidic, rather than neutral,

Chemistry
1 answer:
loris [4]3 years ago
3 0

Answer:

5.7

Explanation:

The pH can be calculated by:

pH = -log[H⁺]

Where [H⁺] is the concentration of hydrogen ions. The pH is a way to identify if the  solution is an acid or a base. When pH is equal to 7, the solution is neutral, when it is less than 7, it is acid, and when it is larger than 7, it's a base.

So, for the acid solution given, [H⁺] = 2.0x10⁻⁶ M

pH = -log(2.0x10⁻⁶)

pH = 5.7

You might be interested in
What occurs when a solid substance dissolves into a liquid? 1 It stays solid and sinks to the bottom of the liquid substance. 2
katrin [286]

Explanation:

When a solid substance is dissolved in a liquid such as water, the intermolecular forces of attraction between the molecules in the solid substance are overcome and they exist as ions in the solution. Hence the answer is 2.

6 0
3 years ago
Mercury chloride is a commercial fungicide. If the molar mass is 470 g/mol and the percent composition is 85.0% Hg and 15.0% Cl,
ElenaW [278]
Data: molar mass 470 g/mol

Percent composition:

Hg = 85.0%
Cl = 15.0%

Solution:

1)  Convert % to molar ratios

A. Base: 100 g

=> Hg = 85.0 g / 200.59 g/mol = 0.4235 mol

     Cl = 15.0 g / 35.45 g/mol = 0.4231 mol

B. divide by the higher number and round to whole number

Hg = 0.4325 / 0.4231 = 1.00

Cl = 0.4231 / 0.4231 = 1.00

=> Empirical formula = Hg Cl

2) Find the mass of the empirical formula:

HgCl: 200.59 g/mol + 35.45 g/mol = 236.04

3) Determine how many times is the empirical mass contained in the molecular mass:

470 g/mol / 236.04 = 1.99 ≈ 2

=> Molecular formula = Hg2 Cl2.

Answers:

Empirical formula HgCl
Molecular Formula Hg2Cl2
6 0
3 years ago
Which statements describe seismic waves? Select three options.
Alenkasestr [34]

Answer:

A, C, E

Explanation:

8 0
2 years ago
Read 2 more answers
During lab, you measured the heat of reaction by mixing solutions of FeCl3 and NaOH.
Kobotan [32]

Explanation:

pls, refer to the above picture, i hope you will find it helpful.

6 0
3 years ago
What astronomical equiptment did hypatia use?
abruzzese [7]
Hypatia used an astrolabe.

8 0
3 years ago
Other questions:
  • True/False: A neutral atom contains the same number of protons as electrons
    10·2 answers
  • Calculate the percent ionization of nitrous acid in a solution that is 0.311 M in nitrous acid (HNO2) and 0.189 M in potassium n
    7·1 answer
  • What would be an evidence of release in energy?
    9·1 answer
  • An unknown metal has a density of 10.51 g/ml and a mass of 287.8 g. What is the
    12·2 answers
  • Aldo cannot get the answer to a chemistry problem, even after sitting at his desk for an hour. He gets up and goes for a walk. S
    14·1 answer
  • How much energy must be absorbed by 45.0g of water to increase its temperature from 83 0°C to 303.0°C?
    13·1 answer
  • What factors – physical, historical, and otherwise – have contributed to the traditional identification of multiple “oceans” ver
    12·1 answer
  • Which of the following is NOT a true about atomic mass?
    6·1 answer
  • _____ and _______ are necessary for rusting.​
    7·2 answers
  • When potassium permanganate is stirred in water, it turns to purple. How would
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!