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
BARSIC [14]
3 years ago
6

Which of the following sources of pollution would be the most difficult to track and regulate? a. lawn fertilizer runoff b. a wa

ste treatment plant c. a factory d. a nuclear power plant Please select the best answer from the choices provided A B C D
Chemistry
2 answers:
siniylev [52]3 years ago
5 0

Answer:

a.

lawn fertilizer runoff

Explanation:

i finished the test for edge2020.

VashaNatasha [74]3 years ago
4 0

a. lawn fertilizer runoff

 Pollution as a result of lawn fertilizer runoff would be difficult to track and regulate due to the possible breadth of the area affected. Toxins can be spread throughout the land area as well as be carried downstream if near a water source. Sewer systems, rivers, lakes, ponds, etc. can all be negatively affected by lawn fertilizer runoff. Irrigation or rain water can carry toxins for many miles before the effects are detected. Tracing the source of the toxins would be difficult, especially in a highly populated area.

You might be interested in
During a chemical reaction, an iron atom became the ion Fe2+. What happened to the iron atom?
Mariana [72]
The Iron atom lost two electrons to become the Fe2+ ion. This is referred to as oxidation.
5 0
3 years ago
Read 2 more answers
Cuántos gramos de hidróxido de sodio (NaOH) se debe de agregar a un litro de agua para obtener una disolución al 25% en masa
Tamiku [17]

Answer:

= 250 gramos

Explanation:

No ha preguntado sobre peso / peso o peso / volumen.

Para w / v:

Simplemente tome el 25% de 1000 y luego agréguelo en 1L de agua

La masa de NaOH necesaria es de 250 g.

Para w / w:

250 gramos de NaOH y 750 g de agua, hará que la solución sea 1L.

5 0
3 years ago
The boiling point of water is 100.00 °C at 1 atmosphere.
Oksana_A [137]

Answer:

The solution's boiling point is 100,2°C and its molality is 0,13 m

Explanation:

This is the colligative propertie about elevation of boiling point

ΔT = Kb . m . i where

ΔT is the difference between T° at boiling point of the solution - T° at boiling point of the solvent pure

Kb means ebulloscopic constant (<u><em>0,52 °C.kg/m .- a known value for water</em></u>)

m means molality (moles of solute in 1kg of solvent)

i means theVan 't Hoff factor ( degree of dissociation for a compound)

IT HAS NO UNITS

NiI2 ---> Ni2+  +  2I-  (we have 1 Ni2+ and 2 I-), the i for this, is 3

The 11,11 g of the salt are in 272,2g of water but I need to know how many mass of the salt is in 1000 g of water (1000 g is 1 kg) so the rule of three is:

272,2g ____ 11,11g

1000g _____ (1000 g . 11,11g) / 272,2g = 40,81g

As the molar mas of NiI2 is 312.5 g/mol, the moles of salt are, mass/molar mass, 40,81g /312.5 g/mol = 0,130 moles

T° of b p sl - 100°C = 0,52 °C.kg/m . 0,130 m/kg . 3

T° of boiling point solution = (0,52 °C.kg/m . 0,130 m/kg . 3) + 100°C

T° of boiling point solution = 100,2°C

4 0
3 years ago
What would make bromide salt insoluble in water?
anzhelika [568]
Its doesn't dissolve in water! 
3 0
3 years ago
A CaCl2 solution is given to increase blood levels of calcium. If a patient receives 6.1 mL of a 12 % (m/v) CaCl2 solution, how
Yuliya22 [10]

Mass of CaCl₂ = 0.732 g

<h3>Further explanation</h3>

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

\tt \%(m/v)\rightarrow 12\%=\dfrac{mass~CaCl_2}{volume~of~solution}\times 100\%\\\\mass~CaCl_2=12\%\times 6.1\div 100\%\\\\mass~CaCl_2=0.732~g

5 0
3 years ago
Other questions:
  • What is the mass of 7.91 cm to the power of three piece of lead having a density of 11.34 g/cm to the power of three?
    10·1 answer
  • how chemicals are used withing the chemical making process. What role do chemical engineers play in the final product?
    9·1 answer
  • 14 POINTS
    10·2 answers
  • Help please!!!!!!I have to have 20 caracters
    9·2 answers
  • 23. True or false? Atoms that have the same number
    7·1 answer
  • Which of the following is an example of a chemical change?
    10·2 answers
  • Which of the following is the first stage of aerobic respiration?
    8·1 answer
  • A 25 mL sample of 0.100 M HNO3 completely reacts with NaOH according to this equation:
    14·2 answers
  • What is the difference in basicity between drain cleaner (pH 13) and ammonia (pH 11.9)?
    7·2 answers
  • What orbital does the quantum numbers n=4 l=2 ml=2 describe
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!