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
Licemer1 [7]
3 years ago
5

A student takes a sample of KOH solution and dilutes it with 100.00 mL of water. The student determines that the diluted solutio

n is 0.046 M KOH, but has forgotten to record the volume of the original sample. The concentration of the original solution is 2.09 M. What was the volume of the original sample?
Chemistry
1 answer:
Firlakuza [10]3 years ago
8 0

Answer:

2.2mL

Explanation:

First, let us analyse what was given from the question:

C1 = 2.09M

V1 =?

C2 = 0.046M

V2 =100mL

Using dilution formula (C1V1 = C2V2), we can calculate the volume of the original solution as follows:

C1V1 = C2V2

2.09 x V1 = 0.046 x 100

Divide both side by the coefficient of V1 ie 2.09, we have:

V1 = (0.046 x 100) / 2.09

V1 = 2.2mL

You might be interested in
Alex saw a rusty old car in an abandoned lot. Because he had recently read about chemical reactions, he began to wonder how the
Mice21 [21]

The answere is A .......


8 0
3 years ago
How many molecules are there in 79g of Fe2O3? how many atoms is this?
Leya [2.2K]
There are approximately 160 grams in 1 mol of Fe2O3 molecules. Therefore, there would be 79/160= 0.49375 mols of Fe2O3 molecules in 79 grams. There are 5 atoms in total for each molecule of Fe2O3, therefore 79/160 * 5 = 79/32 = 2.46875 mols of atoms.
4 0
3 years ago
Three people made the
mojhsa [17]

Answer:

the answer is b hope it helped

Explanation:

8 0
3 years ago
PLEASE HELP!!!
NNADVOKAT [17]

When you are collecting DNA, you could be looking for a few different things. A few examples could be skin cells, strands of hair, or possibly even a fingernail. Anything that comes from a person, including blood or saliva can be potential DNA that could help investigators to link a person back to a crime.

Investigators do not need a warrant for analyzing crime scenes due to the fact of the dangers of the fire. You must work quickly because accelerants tend to evaporate within days, sometimes hours. It is also important to note that finding the origin of the fire is very important, to make sure it won't be reignited. Debris is usually cleaned away quickly to ensure health and safety issues.

The point of origin of a fire is the lowest point, since fire burns upwards.

High explosive: Ignite almost instantly, like dynamite and TNT. Two different types are primary and secondary.

<em>Primary: easily ignited, very sensitive to heat and friction. often used to ignite other explosives. </em>

<em>Secondary: much less sensitive to heat and friction, might be ignited using other explosive materials. TNT and dynamite are both secondary. </em>

Low explosive: decompose slowly and include black and smokeless powder. They are the most common type of explosives, and are readily available.

4 0
3 years ago
Why do we have to pay if its just learning
Oxana [17]

Answer:

what are we paying for?

Explanation:

8 0
3 years ago
Other questions:
  • Which diagram shows a pair of electrons that have opposite spins?<br> OT<br> 11<br> 11<br> 个个
    13·2 answers
  • What mass in grams of ethylene oxide is needed to react with 18 g of water?
    15·1 answer
  • The properties of a compound ____________________ those of its elements.
    10·1 answer
  • Consider this balanced chemical equation: 5SF4 + 2I2O5 = 4IF5 + 5SO2 a. What is the limiting reagent when 4.687 grams SF4 reacts
    11·1 answer
  • ANSWER FAST PLZ!!!!!!!!
    11·1 answer
  • Assume you are designing a refrigerator system how would you use gas laws in the designing?​
    10·1 answer
  • How many atoms are there in 5.8 mol of iron
    14·1 answer
  • What part of the atom is involved in chemical reactions?
    15·2 answers
  • In order for rocks to be classified as igneous, the rocks must​
    15·1 answer
  • Determine the empirical and molecular formula of a compound composed of its 18.24 g c, 0.51 g h and 16.91 g flourine has a molar
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!