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
8090 [49]
2 years ago
9

What is the molarity of 0.25 moles of KBr dissolved into 250 ml of solution?

Chemistry
1 answer:
Tatiana [17]2 years ago
4 0

Answer: 1.0 M

Explanation:

250 mL = 0.25 L

molarity = (moles of solute)/(liters of solution) = 0.25/0.25 = 1.0 M

You might be interested in
a certain gas occupies 5 dm³ at 24 °C and 15 cm Hg. Calculate the pressure of the gas if the volume is halved and the temperatur
Fantom [35]

Explanation:

<em>(</em><em>P1V1</em><em>)</em><em>/</em><em>T1</em><em>=</em><em>(</em><em>P2V2</em><em>)</em><em>/</em><em>T2</em>

<em>(</em><em>1</em><em>5</em><em>X</em><em>5</em><em>)</em><em>/</em><em>2</em><em>9</em><em>7</em><em>=</em><em>(</em><em>p2x2</em><em>.</em><em>5</em><em>)</em><em>/</em><em>4</em><em>7</em><em>3</em>

<em>p2</em><em>=</em><em>47.78cmHg</em>

7 0
3 years ago
Among the following groups of atoms, which have the same outer energy level configurations?
luda_lava [24]
The answer is D. N, P, As, Bi.
6 0
4 years ago
Read 2 more answers
Which of the following would be the most difficult to compress?
Alchen [17]
The hardest to compress here would be the brick
3 0
3 years ago
Read 2 more answers
A secondary step in the process to produce ultra-pure silicon is to combine silicon tetrachloride with magnesium. How many grams
mariarad [96]

The mass of silicon, Si produced from the reaction is 329.41 g

<h3>Balanced equation </h3>

SiCl₄ + 2Mg —> 2MgCl₂ + Si

Molar mass of SiCl₄ = 28 + (35.5×4) = 170 g/mol

Mass of SiCl₄ from the balanced equation = 1 × 170 = 170 g

Molar mass of Si = 28 g/mol

Mass of Si from the balanced equation = 1 × 28 = 28 g

From the balanced equation above,

170 g of SiCl₄ reacted to produce 28 g of Si.

<h3>How to determine the mass of Si produced </h3>

From the balanced equation above,

170 g of SiCl₄ reacted to produce 28 g of Si.

Therefore,

2 Kg (i.e 2000 g) of SiCl₄ will react to produce = (2000 × 28) / 170 = 329.41 g of Si

Thus, 329.41 g of Si were obtained from the reaction

Learn more about stoichiometry:

brainly.com/question/14735801

8 0
3 years ago
Which one is true and which one is false
Mekhanik [1.2K]
In order top top to bottom
F
F
T
T
F
F
T
T
7 0
4 years ago
Other questions:
  • 3. What was your average percent error for all three trials? In this experiment you did three trials. Why was it suggested that
    14·2 answers
  • The radius of a lithium atom is 130 picometers, and the radius of a fluorine atom is 60 picometers. The radius of a lithium ion,
    14·1 answer
  • Can someone please help me on number 4
    6·2 answers
  • Why does the temperature of different layers of the atmosphere vary
    10·1 answer
  • Which is untrue about covalent compounds?
    15·2 answers
  • A student determined the heat of fusion of water to be 88 calories per gram if the accepted value is 80 calories per gram, what
    15·1 answer
  • In the 1 H NMR spectrum of chloroethane the methylene group is split into a quartet by the α and β nuclear spins of the protons
    8·1 answer
  • What’s the answer to number 6 ty!!
    5·1 answer
  • A student knows the width and
    11·1 answer
  • PLZZZZZ HELP MEEEEEEEE
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!