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arlik [135]
4 years ago
15

How to calculate average concentration

Chemistry
1 answer:
melisa1 [442]4 years ago
8 0

Answer:

The number of moles of a primary standard can be determined from its formula weight and its mass. If a volumetric flask is used to carefully make up a standard solution from a primary standard, the concentration can be calculated by dividing the number of moles of solute by the volume of the flask in liters.

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If a substance contains a hydrogen ion concentration of 1.0 x 10-5 M, which types of ions does it contain more of?
miss Akunina [59]

Since the pH of the substance is 5, the substance contains more of hydrogen ions.

<h3>What is pH of a solution?</h3>

The pH of a a solution is the negative logarithm to base ten of the hydrogen ions concentration of the solution.

pH = -log[H^{+}]

A neural solution has pH 7.

A solution with pH below 7 has more hydrogen ions while a solution with pH above 7 has more hydroxide ions.

The pH of a substance contains a hydrogen ion concentration of 1.0 x 10-5 M is 5.

Therefore, the substance contains more of hydrogen ions.

Learn more about pH at: brainly.com/question/940314

6 0
2 years ago
Hydrogen has three isotopes 1H, 2H, and 3H. What is the difference between these three isotopes?
ANEK [815]
They contain different amounts of protons within them.
8 0
3 years ago
1.the volume of air in a mountain bicycle tire is constant. the initial pressure and temperature are 3.14 atm and 26 degrees cel
sattari [20]

Answer:

Explanation:

Givens

P1 = 3.14 atm

T1 = 26 + 273 = 299

P2 = 3.96

T2 = ?

Equation

P1 / T1 = P2 / T2

Solution

3.14 / 299 = 3.96 / x                   Cross multiply

3.14 x = 299 * 3.96                     Divide by 3.14

x = 299*3.96 / 3.14

x = 1184.04/3.14

x = 377.08 oK                             Take off 273 to get the degrees Centigrade.

x = 104.08 oC

Part B

If you want the temperature to increase, the relationship is a direct  one. That means as the temperature goes up, the pressure will as well. So for a bicycle, it makes sense that the volume remains constant. That makes the formula above without volume because the volume would cancel out on both sides of the equation.

So as the pressure increases, the particles making up the air begin to respond by the molecules moving faster. Temperature really is the a measurement of how fast molecules are moving. So the momentum is increasing. When the particles hit something, it is with a much greater force and that increases the apparent pressure.

3 0
3 years ago
Help me please !!! I need this question as soon as possible help !!!!!!!
IRISSAK [1]

Answer:land, crust, magma and core

Explanation:

8 0
3 years ago
Read 2 more answers
HELPP!!!!!!!!!!
muminat

1. Mg + CuSO4 —> MgSO4 + Cu

=> Single displacement reaction

2. 2HCI + Mg(OH)2 —> MgCI2 + H2O

=> Acid - base reaction

3.AgNO3 + NaCI —> AgCI + NaNO3

=> Double displacement reaction

8 0
3 years ago
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