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
Alja [10]
3 years ago
15

Sugar is easily soluble in water and has a molar mass of 342.30 g/mol. What is the molar concentration of a 259.8 mL aqueous sol

ution prepared with 73.1 g of sugar?
Chemistry
1 answer:
DanielleElmas [232]3 years ago
5 0

Answer:

M=0.822M

Explanation:

Hello,

In this case, given the mathematical definition of molar concentration as the moles of solute divided by the liters of solution:

M=\frac{n}{V}

We can easily compute it by firstly computing the moles of sugar by using its molar mass:

n=73.1g*\frac{1mol}{342.30g} =0.214mol

After that, we compute the concentration by realizing 259.8 mL equals 0.2598 L:

M=\frac{0.214mol}{0.2598L}\\ \\M=0.822mol/L

Or just:

M=0.822M

Considering molar units as mol/L

Best regards.

You might be interested in
The proposed mechanism for a reaction is: Step 1: A + B X (fast) Step 2: X + C Y (slow) Step 3: Y D (fast) What is the overall r
PolarNik [594]

Answer:

(slow)xy2+z→xy2z (fast) c step1:step2:xy2+z2→xy2z2

Explanation:

Step1: xy2+z2→xy2z2 (slow)

Step2: xy2z2→xy2z+z (fast)

2XY 2 + Z 2 → 2XY 2 Z

Rate= k[xy2][z2]

 

When the two elementary steps are summed up, the result is equivalent to the stoichiometric equation. Hence, this mechanism is acceptable. The order of both elementary steps is 2, which is ‘≤3’; this also makes this mechanism acceptable. Furthermore, the rate equation aligns with the experimentally determined rate equation, and this also makes this mechanism acceptable. Therefore, since all the three rules have been observed, this mechanism is possible.

5 0
3 years ago
Describe how the particles of two substances interact when mixed. Be sure to discuss the activation energy and how the particles
Charra [1.4K]
A reaction mechanism must ultimately be understood as a "blow-by-blow" description of the molecular-level events whose sequence leads from reactants to products. These elementary steps (also called elementary reactions) are almost always very simple ones involving one, two, or [rarely] three chemical species which are classified

It is common knowledge that chemical reactions occur more rapidly at higher temperatures. Everyone knows that milk turns sour much more rapidly if stored at room temperature rather than in a refrigerator, butter goes rancid more quickly in the summer than in the winter, and eggs hard-boil more quickly at sea level than in the mountains. For the same reason, cold-blooded animals such as reptiles and insects tend to be noticeably more lethargic on cold days.

Thermal energy relates direction to motion at the molecular level. As the temperature rises, molecules move faster and collide more vigorously, greatly increasing the likelihood of bond cleavages and rearrangements as described above.
8 0
3 years ago
Can you help me balance the equations from 1-10 please and thank you.
Korolek [52]

Answer:

  1. 2 NaBr + Ca(OH)2 → CaBr2 + 2NaOH
  2. 2 NH3 +H2SO4 → (NH4)2(SO4)
8 0
2 years ago
A student was asked to determine the densities of the four metals listed. The student was asked to determine the density of an u
Iteru [2.4K]

Answer:

D is correct

Explanation:

because

we know that

density of lead is 11.36 g/cm3

and

density of tin is 7.31 g/cm3

so..

density of alloy by mixing 50/50

=(11.36+7.31)/2 g/cm3

=18.67/2 g/cm3

=9.33 g/cm3

5 0
3 years ago
The following reaction is a _______ reaction.
jasenka [17]
Compound reaction :)
7 0
3 years ago
Other questions:
  • When more organisms move into an ecosystem and use more resources, the result is
    13·2 answers
  • What is the purpose of graphics in scientific articles
    15·1 answer
  • For each store,what is the ratio of the number of cans to the price:24 packs (2 for 9);12 packs (4 for 10);12 packs (3 for 9)
    13·1 answer
  • g A molecule with 6 areas of electrons (6 electrons domains) consisting of 4 bonding domains and 2 non-bonding domains will have
    15·1 answer
  • Uranium-236 is ____.
    13·2 answers
  • An anhydrous sample of CaCO3 (100.089 g/mol) weighing 0.9849 g was quantitatively transferred into a 250.0 mL volumetric flask h
    6·1 answer
  • Briefly compare and contrast the relative resistance to ph change of the seven solutions
    5·1 answer
  • Question 11 please HELP
    9·1 answer
  • The molar mass of Ba(OH)2 is<br> (1) 154.3 g (3) 171.3 g<br> (2) 155.3 g (4) 308.6 g
    5·1 answer
  • Lowest frequency?______​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!