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
Gala2k [10]
3 years ago
6

How much Sr(OH)2 • 8 H2O (M = 265.76) is needed to prepare 250.0 mL of solution in which [OH–] = 0.100 M?

Chemistry
1 answer:
son4ous [18]3 years ago
3 0
<span>There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. We do as follows:

Molarity = mol / L = 0.100 mol OH / L

0.100 mol OH / L ( .250 L ) ( 1 mol  </span>Sr(OH)2 • 8 H2O / 2 mol OH ) ( 265.76 g / 1 mol ) = 3.322 g Sr(OH)2 • 8 H2O needed
You might be interested in
Substances that are good conductors of heat and electricity at room temperature usually
Gnom [1K]

Answer:

the answer is electric

Explanation:

i think so

7 0
3 years ago
What is the balanced equation of Na2S+CuSO4=CuS+Na2SO4?​
lapo4ka [179]
What you were given is the balanced chemical equation
3 0
2 years ago
Why is a thermos considered a (mostly) closed system? Question 3 options: different types of liquids stay hot thermoses come in
cestrela7 [59]

Answer:

Different types of hot or cold items can be stored in a thermos and power cannot enter or exit the system when the thermos lid is tightly closed

Explanation:

Closed systems are those that do not interact or do not exchange energy with the environment that surrounds them, that is why internal temperatures and conditions are maintained.

The human body is an open system, that is, it would be the opposite of the thermos since we constantly exchange energy with the environment through sweating, emission of gases, urine, feces, and the ingestion of food.

Thermoses are systems specially created to maintain a medium, it will be maintained if its lid is hermetically closed to prevent heat leakage or entry in situations of cold fluids.

4 0
3 years ago
Animation shows a complete revolution of the Earth around the sun. What happens during this time? The moon makes one complete ph
docker41 [41]

Answer:

Four seasons occur on Earth

Explanation:

When the Earth has completely one revolution around the Sun, then it has completed 1 year, and four seasons have occurred in the meantime.

5 0
3 years ago
The mass of an element is 27 and it's atomic number is 13. Give the composition of the nucleus of it's atom.
love history [14]

Answer:

nucleus consists of:

13 protons, 14 neutrons

8 0
2 years ago
Other questions:
  • An igneous rock that contains mostly proxene and olivene has ___.
    6·1 answer
  • A polar covalent bond is likely to form between two atoms that
    14·1 answer
  • A student is performing a titration to determine the concentration of a 20.0 mL sample of hydrochloric acid. What did the studen
    14·1 answer
  • The number 0.0007270 is larger than the number 5.7 × 10–3.
    15·1 answer
  • 4. How many moles in 2.0 x 1023 atoms of H2O?<br> here.
    7·1 answer
  • What might happen if the strong force didn’t exist
    9·1 answer
  • Substance A is mixed with water and donates 0.4% of its H+ ions. Which of the following BEST describes Substance A? (See picture
    14·1 answer
  • How many milliliters are in a 30 gallon drum?
    12·2 answers
  • Water is made of polar molecules, and oil is made of nonpolar molecules. Based on your observations, which molecules attract eac
    5·1 answer
  • Which subatomic particle is positively charged?ProtonNeutronElectronNone
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!