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
Sophie [7]
2 years ago
12

How many grams of KBr is required to prepare 100 mL of 2.0 M KBr solution?

Chemistry
1 answer:
sesenic [268]2 years ago
4 0

Answer:

23.8g

Explanation :

Convert 2.0M into mol using mol= concentration x volume

2.0M x 0.1L (convert 100mL to L since the units for M is mol/L)

= 0.2 mol

We can now find grams by using the molar mass of KBr

=119.023 g/mol (Found online) webqc.org

but can be be calculated by using the molecular weight of K and Br found on the periodic table

We can now calculate the grams by using grams=mol x molar mass

119.023g/mol x 0.2mol

= 23.8046 g

=23.8g (rounded to 1decimal place)

You might be interested in
How many sulfur atoms are in 3.7 mol of SO2?<br><br> × 10 S atoms
Allisa [31]

Answer: 22.3 *10^23 S atoms

Explanation:

8 0
2 years ago
Emily spills concentrated sodium hydroxide solution on her lab bench. What she should do first?
blagie [28]
<h2>Answer:</h2>

She should notify her teacher.

<h2>Explanation:</h2>

Sodium Hydroxide is very corrosive in nature and it causes Redness, Pain, Serious skin burns and Blisters. Sodium hydroxide does not produce systemic toxicity, but is very CORROSIVE and can cause severe burns in all tissues that it comes in contact with. Therefore she should not touch it and she must notify her teacher as soon as possible.

4 0
2 years ago
Which example is NOT a model?
lidiya [134]

Answer:

B

Explanation:

i think leter B it because

7 0
3 years ago
Read 2 more answers
Please help!!! will give brainliest!!! 30 points! (need to put roman numeral in answer)
mariarad [96]

1. Nickel (II) Bromide

2. Iron (II) Oxide

3. Iron (III) Oxide

4. Tin (IV) Chloride

5. Lead (IV) tetrachloride

6. Tin (II) Bromide

7. Chromium (III) Phosphide

8. Iron (II) Fluoride

9. Gold (III) Chloride

I hope this helps. I'm more than 100% sure that all the answers except for number 7 are correct. I knew all of them off the top of my head except for this one. I hope the other answer has the correct answer for that one. Good luck and have a great day.

3 0
2 years ago
What is the base dissociation constant for a weak base at equilibrium, B + H2O &lt;===&gt; BH+ + OH–?
podryga [215]
Depends on what the base is. You would reference the base dissociation chart for that value.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following are held together by nonpolar convalent bonds?
    7·1 answer
  • Identify each energy exchange as primarily heat or work and determine whether the sign of ΔE is positive or negative for the sys
    5·1 answer
  • Show how the following are formed
    5·1 answer
  • Menthol, the substance we can smell in mentholated cough drops, is composed of C, H, and O. A 0.1005 g sample of menthol is comb
    15·2 answers
  • What is the most stable part of the periodic table of elements
    13·1 answer
  • 2. For the following reaction, calculate how many moles of each product are formed when 0.356
    7·1 answer
  • What would happen if the earth did not have gravity?
    13·2 answers
  • Please help me with chemistry
    11·1 answer
  • in an experiment 3.5g of element A reacted with 4.0g of element G to form a compound Calculate the empirical formula for this co
    8·1 answer
  • ¿En cuáles está presente la química?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!