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
arsen [322]
3 years ago
12

A lake in Utah has a hydronium ion (H3O+) concentration of 4.60 x 10-9 M. Calculate the pH of the water.

Chemistry
1 answer:
klio [65]3 years ago
8 0
Answer is: <span>pH of the water is 8.33, this is basic solution (pH is greater than seven).

</span>[H₃O+] = 4.60·10⁻⁹ M; equilibrium concentration of hydronium ion.
pH = -log[H₃<span>O+].
</span>pH = -log(4.60·10⁻⁹ M).
pH = 8.33.
pH (potential of hydrogen) is a numeric scale used to specify the acidity or basicity <span>an aqueous solution.
</span><span>
</span>
You might be interested in
Chemical ____ are used to represent compounds ​
cupoosta [38]

Answer:

Its formula :)

Explanation:

hope this helps <3

3 0
3 years ago
Read 2 more answers
The specific heat of copper is 0.40 joules/ g °c. How much heat is needed in joules to change the temperature of a 55 gram subst
Snezhnost [94]

Answer : The amount of heat needed is, 1188 J

Explanation :

Formula used :

q=m\times c\times (T_2-T_1)

where,

q = heat needed = ?

m = mass of copper = 55 g

c = specific heat capacity of copper = 0.40J/g^oC

T_1 = initial temperature = 20.0^oC

T_2 = final temperature = 74.0^oC

Now put all the given values in the above formula, we get:

q=55g\times 0.40J/g^oC\times (74.0-20.0)^oC

q=1188J

Thus, the amount of heat needed is, 1188 J

3 0
3 years ago
(ii) Electrons are supplied to the external circuit. How and where is this done?<br> [2]
pentagon [3]

Answer:

The electrons are supplied by the species getting oxidized. They move from anode to the cathode in the external circuit. The external battery supplies the electrons. They enter through the cathode and come out through the anode

7 0
3 years ago
__________are when the Sun, Earth, and moon align in a straight line, the tides are higher than normal high
IceJOKER [234]
An eclipse i’m pretty sure right? Lunar maybe?
4 0
2 years ago
If a sample has 25% parent and 75% daughter, how many halflifes have gone by?
Anit [1.1K]

Answer:

Two half lives.

Explanation:

It is known that the decay of isotopes and radioactive material obeys first order kinetics.

Also, it is clear that in first order decay the half-life time is independent of the initial concentration.

That means for a sample 100% to decay to 50 % it will take one half-life, and to decay the remaining 50% to 25% it will take another half-life.

So, for a sample has 25% parent and 75% daughter it will have two half-lives.

6 0
3 years ago
Other questions:
  • A sodium atom has a mass number of 23. Its atomic number is 11. How many electrons does a neutral sodium atom have?
    10·1 answer
  • Is The atoms of the elements have different masses but the same volume true?
    7·1 answer
  • Suppose an aqueous solution containing 1.25 g of lead(II) acetate is treated with 5.95 g of carbon diox- ide. Calculate the theo
    9·1 answer
  • Can someone help me answer C
    8·1 answer
  • What rate of reaction can be measured in the dark by determining the amount of oxygen gas consumed in a period of time?
    8·2 answers
  • Which process is making the pots handle hot?
    11·2 answers
  • What happens when you mix two different items (gases or liquids) together when they have different densities?
    15·1 answer
  • An atom that has lost or gained electrons is known as an ion.
    13·1 answer
  • Object A and B have the same mass. Which object is experiencing a stronger gravitational force?
    9·1 answer
  • What is a water cycle​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!