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
Veseljchak [2.6K]
3 years ago
14

what is the concentration in ppm of a solution which is prepared by dissolving in 15mg of nacl in 200ml water

Chemistry
1 answer:
bezimeni [28]3 years ago
6 0

Answer:

Explanation:

In weight/volume (w/v) terms,

   1 ppm = 1g m-3 = 1 mg L-1 = 1 μg mL-1

200 mL = 0.2 L

15 / 0.2 mg L-1 =75 ppm

You might be interested in
Which is the correct order for a food chain?
Zigmanuir [339]
C because first comes the source or producer than the first eater then the second and then it decomposes
6 0
3 years ago
Large telescopes have revealed information about the motions of stars. They helped scientists realize that most stars and galaxi
fiasKO [112]

Answer:b

Explanation:sorry if I’m wrong

5 0
2 years ago
Wax is a nonpolar substance, but the surface of a piece of glass is polar. Based on your observations from part E, which substan
KIM [24]

Based on the observations from, the substance that water is more attracted to are polar substances.

<h3>What is the Polarity of water?</h3>

Water is a compound made up of 2 atoms of hydrogen and 1 atom of oxygen.

Water molecule is polar due to the unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule.

Since water molecules are polar, they are more attracted to molecules that are also polar.

Thus, based on the observations from, the substance that water is more attracted to are polar substances.

Learn more about water here: brainly.com/question/5060579

#SPJ1

5 0
2 years ago
Someone answer this please...
boyakko [2]

Answer:

120 mol Mg

General Formulas and Concepts:

<u>Chemistry - Stoichiometry</u>

  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

120 moles H₂

<u>Step 2: Identify Conversions</u>

RxN:   3 mol H₂ = 3 mol Mg

<u>Step 3: Stoichiometry</u>

<u />120 \ mol \ H_2(\frac{3 \ mol \ Mg}{3 \ mol \ H_2} ) = 120 mol Mg

7 0
2 years ago
Read 2 more answers
Please I'm taking the unit test I need help
Naddik [55]

Answer:

Mechnical weathering

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • What are weak bonds that allow flexibility in enzymes
    8·1 answer
  • What happens to water as it boils?
    10·2 answers
  • Question 11: How does the energy of a photon emitted when the electron moves from the 3rd orbital to the 2nd orbital compare to
    14·1 answer
  • PLEASE HELP! 50 POINTS IF CORRECT!
    5·2 answers
  • How do enzymes speed un chemical reactions?
    5·1 answer
  • Which best describes a chemical reaction that follows the law of conservation of matter?
    13·1 answer
  • A certain signal produces 2.56x10^9 waves per hour (2560000000 waves/h). What is the frequency of this signal in Hertz?
    6·1 answer
  • a cell is placed in a salt solution that has the same concentration as the inside of the cell. What will happen to the cell ?​
    7·1 answer
  • How many moles of aluminum are equivalent to 4.816 × 1024 atoms?
    5·2 answers
  • What functional group results when cyclopentanone reacts with ethylamine in the presence of trace acid? A) cyanohydrin B) semica
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!