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
sergejj [24]
3 years ago
6

A student prepares an iron standard solution in a 50.00 mL volumetric flask. The iron stock concentration is 0.0001974 M. A stud

ent dispenses 29.80 mL of stock iron solution into the volumetric flask, adds the reagents, and dilutes to volume with H2O. The concentration of the iron standard is:
Chemistry
1 answer:
Serhud [2]3 years ago
4 0

Answer:

0.00011765 M

Explanation:

When a solution is prepared by dilution, the volumes and concentrations are related by:

C1*V1 = C2*V2

Where C1 is the concentration of the solution 1, V1 is the volume of the solution 1, C2 is the concentration of solution 2, and V2 is the volume of solution 2.

The stock solution is the solution 1, and the standard solution, the solution 2, so:

0.0001974*29.80 = C2*50.00

C2 = 0.00011765 M

You might be interested in
2. Which one of the following chemical equations is balanced? A. 2NaCl + H2SO4 → HCL + NaSO4 B. NH3 + H2O → 2NH4OH C. 2Na + S →
Lady_Fox [76]
D.  KOH + H₂SO₄ → KHSO₄ + H₂O
6 0
3 years ago
Read 2 more answers
Elements
Snezhnost [94]

Answer:

elements are composed of

electrons with a little mass and negative charge

protons with mass and positive charge

neutrons with mass and no charge

isotopes same number of protons, different in neutrons

share me the other part of the photo to complete!!!

7 0
3 years ago
8. Thermal Energy is?
Burka [1]

Thermal energy is the sum of the kinetic and potential energy of all the particles in an object. The figure shows that if either potential or kinetic energy increases, thermal energy increases.

hope it really helps...!!!

4 0
2 years ago
Help me please
kati45 [8]

Answ????

Explanation:

confused confused confused

5 0
3 years ago
Round to 4 significant figures.<br> 0.007062
lapo4ka [179]

Answer:

Hey there!

This is already rounded to four significant figures!

Zeroes after the decimal but before the 7 don't count, and 7, 0, 6, and 2 count as significant figures.

So, the answer would be 0.007062.

Let me know if this helps :)

8 0
3 years ago
Other questions:
  • How would this atomic structure change if you built an atom of Krypton which has an atomic number of 36?
    13·1 answer
  • If 4.50 g of (nh4)2so4 is dissolved in enough water to form 250. ml of solution, what is the molarity of the solution?
    8·1 answer
  • Help asap ill give branilsit
    8·1 answer
  • What three factors affect the rate of dissolution?
    14·1 answer
  • Given: 2NaCl the 2 is:
    7·1 answer
  • An animal skeleton has a carbon-14 decay rate of 13.1 disintegrations per minute per gram of carbon. When did the animal die? (A
    13·1 answer
  • What is the edge length of a 377-g iron cube? (The density of iron is 7.86 g/cm^3, and the volume of a cube is equal to the edge
    5·2 answers
  • When the pressure that a gas exerts
    7·2 answers
  • Thermal decomposition of magnesium nitrate and magnesium hydroxide <br><br>​
    8·1 answer
  • What is the frequency of a photon that has 3.82 x 10^-20 J of energy? ​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!