If the hydrogen ion concentration is 10-7M, what is the pH of the solution?Show all work.

Answers

Answer 1

Answer: Remember pH=-log(H ions). So it would be pH=-log(10^-7).

Related Questions

What are 5 examples of gases found at home?
What is a physical change
Consider the hydrocarbon below. 2 carbons are double-bonded to each other; the pair are single bonded to H above left, above right, below right, and below left. What is the name of this hydrocarbon?
2. Which of the following is the best definition of half-life for a radioactive substance?O A. Half of the amount of time required for all of the radioactive atoms to decay. O B. The amount of time required for half of the radioactive atoms to decay. O C. The amount of time required for each radioactive atom to decay halfway. O D. All of the above.
Gaseous methane (CH₄) reacts with gaseous oxygen gas (O₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O) If 0.391 g of carbon dioxide is produced from the reaction of 0.16 g of methane and 0.84 g of oxygen gas, calculate the percent yield of carbon dioxide.

An atom of argon in the ground state tends not to bond with an atom of a different element because the argon atom has (a)a total of two valence electrons (b)more protons than neutrons (c)more neutrons than protons or (d)a total of eight valence electrons

Answers

Answer: Option (d) is the correct answer.

Explanation:

Atomic number of argon is 18 and its electronic configuration is $1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)$ .

Also, it is known that number of electrons in K, L and M shells of argon are 2, 8, 8.

Thus, we can conclude that an atom of argon in the ground state tends not to bond with an atom of a different element because the argon atom has a total of eight valence electrons.

So, as per the octet rule, last sub-shell of argon is completely filled. Hence, it will not form any bond with any other atom.

the answer is a total of eight valence electrons
hope this help

Exothermic changes: the system ____________ the surroundings. the heat ____________ by the surroundings ____________ the freedom of motion of the particles which ____________ the entropy of the surroundings. therefore qsys ____________ 0, qsurr ____________ 0, and δssurr ____________ 0.

Answers

Let us fill in the blanks: Exothermic changes: the system HEATS the surroundings. the heat IS ABSORBED by the surroundings AND INCREASES the freedom of motion of the particles which INCREASES the entropy of the surroundings. therefore qsys IS LESS THAN 0 (<0), qsurr > 0, and δssurr >0.

The answers are:

Exothermic changes: the system heats the surrounding. the heat absorbed by

the surroundings increase the freedom of motion of the particles which

increases the entropy of the surrounding. therefore qsys < 0 , qsurr > 0

and delt S > 0 .

the explanation:

the exothermic reaction is a chemical reaction which releases heat, and the

heat is one of its products in the reaction. So the system here released heat

and the surroundings will absorb it.

-in the exothermic reaction, the enthalpy in the surroundings will increase,

as ΔSsurr = -ΔH/T and when ΔH in the exothermic reaction has a negative

sign( - ) so, ΔSsurr has to be +Ve ( positive sign) ∴ ΔSsurr > 0 .

-and when the system released the heat and the surroundings absorbed it this affects the freedom of motion of the particles and make it increase and this will affect the entropy and make it increase.

- in exothermic reaction when the system released heat and the surroundings absorbed it will increase the thermal disorder in the surrounding which makes

ΔSsurr >0 and qsys <0 & qsurr >0 as qsurr = - qsys

when ΔSsurr is proportional to the amount of heat transferred

∴ΔSsurr α qsurr and ΔSurr α - q sys

so when ΔSsurr has a positive sign in the exothermic reaction so qsurr >0

and qsys<0.

Which term best describes the stored energy based on the position or chemical composition of an object?a. kinetic energy
b. potential energy
c. activation energy
d. thermodynamic energy

Answers

Answer: Potential Energy

Explanation:

The term that best describes the stored energy based on the position or chemical composition of an object is its potential energy. It is the energy possessed by a body due to its virtue of its position. Any body at rest possesses this energy because they are in one position (not moving).

An object thrown up possesses potential energy at its maximum height before falling under gravity because the object is at rest at the maximum height.

Stored energy is described as potential energy

What is the 17th element on the periodic table?

Answers

Chlorine is in group 17 of periodic table, also called the halogens, and is not found as the element in nature only as a compound.
Hope I helped Ya!

The 17th element would be Chlorine (Cl).

Which of the following is NOT a clue that a chemical change has occurred?a. change in color
b. production of a gas
c. formation of a precipitate
d. change in shape

Answers

change in shape is the answer because all chemical reactions only affect the chemical composition of the substance

a gas has a volume of 590 mL at a temperature of 590 mL at a temperature of -55.0 degrees Celsius. What volume will the gas occupy at 30.0 degrees Celsius?