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
umka2103 [35]
3 years ago
14

A chemist prepares a solution of iron(II) bromide FeBr2 by measuring out 0.55kg of iron(II) bromide into a 500.mL volumetric fla

sk and filling the flask to the mark with water.
Calculate the concentration in /molL of the chemist's iron(II) bromide solution.
Round your answer to 2 significant digits
Chemistry
1 answer:
Sidana [21]3 years ago
7 0
Molar mass of ferrous bromide: 215.65<span>
m(FeBr2): 550/215.65 = 2.55moles
this is dissolved in 500mL of water so in 1L of solution there will be 2.55x2 = 5.1mol/L</span>
You might be interested in
25. What is the order of the types of nuclear radiation from lowest to highest energy?
Ivenika [448]

Answer:

need more info so i can answer it

Explanation:

3 0
3 years ago
Read 2 more answers
In an aqueous solution which substance yields hydrogen ions as the only positive ion *
GenaCL600 [577]
The question is incomplete. Complete question is
<span>In an aqueus solution, which substance yields hydrogen ions as the only positive ions in the solution? 1)NaH 2)HCOOH 3)LiOH 4) CH3CH2OH?
.............................................................................................................................
Answer: Correct answer is option 2, HCOOH

Reason: 
HCOOH is a formic acid. When mixed in water, it undergoes dissociation which can be represented as

HCOOH         </span>↔           HCOO-       +            H+

The compound NaH, will generate hydride ion (H-), while LiOH is an ionic compound, hence when dissolved in water it generated OH- ions. The compound CH3CH2OH is named as ethyl alcohol. This compound donot dissociate in aqueous medium. 
7 0
4 years ago
A slide 3.3 m long makes an angle of 32° with the ground. How high is the top of the slide above the ground?
Lyrx [107]
Sin 32 = height/3.3 m
height = sin 32 (3.3 m)
height = 1.75 m
7 0
3 years ago
Which three groups of the periodic table contain the most elements classified as metalloids (semimetals)?
attashe74 [19]
The metalloids are mostly concentrated in groups 14, 15, and 16. (Some simpler charts will show them as 4A, 5A, and 6A - take a look at the top of the periodic table your class uses to double-check).

If you like my answer, please vote me a 'brainliest' - trying to improve my rank :-)

8 0
4 years ago
Read 2 more answers
What energy convertion happens when green plants use energy from the sun to make sugar?
mixer [17]
The energy conversion happening here is known as photosynthesis. Photosynthesis is a process where the leaves of a plant absorb water and carbon dioxide, then, using light energy from the sun, convert that into oxygen and sugar.
8 0
3 years ago
Read 2 more answers
Other questions:
  • What does this mean. What am I supposed to do?
    5·1 answer
  • The atomic number of magnesium (Mg) is 12. This is also the number of which of the following?
    15·2 answers
  • When melted iron solidifies without any change in temperature, what is happening on the atomic level?
    14·1 answer
  • Acetylene gas is often used in welding torches because of the very high heat produced when it reacts with oxygen gas, producing
    15·1 answer
  • Consider the orbitals shown below
    10·2 answers
  • Baby albino crocodile, Tall giraffe, Cactus, A desert. Which one doesn't belong?​
    15·2 answers
  • What is the chemical formula for helium gas?
    6·1 answer
  • What can be observed about a substance that does not change the identity of that substance
    5·1 answer
  • A gas sample in a rigid container at 455 k is cooled to 273 k where it has a pressure of 1 atm. What was the original pressure o
    10·2 answers
  • Select the reagents you would use to synthesize the compounds below from benzene. Use the minimum number of steps.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!