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
kherson [118]
3 years ago
9

Q4

Chemistry
1 answer:
Varvara68 [4.7K]3 years ago
3 0

Answer:

Option C.

Ilegal dumping of waste

Explanation:

This is because non point source of pollution refers to source of pollution that are many and not directly one which is illegal or does not meet the legal term. This type of pollution does not have a point source, it has many sources and this type of pollution is cause by rainfall or precipitation. Where when the rain fall, it wash away the waste through to water bodies, causing pollution and endangering water bodies.

You might be interested in
An atom of lead has a radius of and the average orbital speed of the electrons in it is about . Calculate the least possible unc
victus00 [196]

The question is incomplete. Here is the complete question.

An atom of lead has a radius of 154 pm and the average orbitalspeed of the electron in it is about 1.8x10^{8} m/s. Calculate the least possible uncertainty in a measurement of the speed of an electron in an atom of lead. Write your answer as a percentage of the average speed, and round it to significant 2 digits.

Answer: v% = 0.21 m/s

Explanation: To calculate the uncertainty, use <u>Heisenberg's Uncertainty Principle</u>, which states that:  ΔpΔx≥\frac{h}{4\pi }

where h is <u>Planck's constant</u> and it is equal to 6.626.10^{-34}m²kg/s.

Since p (momentum) is p = m.v:

mΔv.Δx ≥ \frac{h}{4\pi }

Δv = \frac{h}{4\pi.x.m }

Given that: r = x = 1.54.10^{-10}m and mass of an electron is m=9.1.10^{-31}kg

Δv = \frac{6.626.10^{-34} }{4.3.14.1.54.10^{-10}.9.1.10^{-31}}

Δv = 0.0376.10^{7}

As percentage of average speed:

Δv.\frac{1}{v}.100% = \frac{0.0376.10^{7} }{1.8.10^{8} }.10² = 0.021.10 = 0.21%

The least possible uncertainty in a speed of an electron is 0.21%.

5 0
4 years ago
Map<br> Formulate your hypothesis.<br> List down the materials.<br> • Write the methods.
Whitepunk [10]

Answer:

How to Formulate an Effective Research Hypothesis

State the problem that you are trying to solve. Make sure that the hypothesis clearly defines the topic and the focus of the experiment.

Try to write the hypothesis as an if-then statement. ...

Define the variables.

Explanation:

5 0
3 years ago
Is a home microwave suitable for organic synthesis ?
o-na [289]

Explanation:

The specially designed microwave units , for the synthesis , are often very expensive and at times get heated up .

The home microwave is suitable only in some case .

And , new modification done on the home microwave , increases the safety factor .

The chemical reactions which need to be done at very high pressure , are preferred to be carried in specially designed oven .

Hence ,

the home microwave is suitable only for some selected and specific reactions .

7 0
4 years ago
Number of moles in 145.7 g of squaric acid
Nesterboy [21]
To find moles : moles= Mass (C₄H₂O₄) / RFM (C₄H₂O₄)

so moles = 147.7 / 114 = <span>1.2956mol

hope that helps </span>
3 0
3 years ago
HEY PLEASE THANK YOU
Goshia [24]
Radon hope this helps.
 
original answer was monoxide which is incorrect and dioxide is incorrect and it is not hydrogen meaning it has to be radon.
5 0
3 years ago
Other questions:
  • How would you prepare 1 liter of .030 m copper 2 sulfate pentahydrate?
    11·1 answer
  • What will be the subscripts for the formula unit Ca_N_?
    8·1 answer
  • 4. Which of these metals is a pure element? Brass Bronze Silver Steel 5. C is the correct chemical symbol for ....... Calcium Ca
    15·2 answers
  • What are the units of k in the following expression: rate = k [A][B]?
    10·2 answers
  • Which of the following are correctly paired?
    12·2 answers
  • When the compound BaCl2 forms , what happens to the Ba and Cl ions
    12·2 answers
  • An unknown substance is measured. It has a mass of 0.221 g and a volume of 2.25 mL. What is its density?
    14·2 answers
  • The amount of manganese in steel is determined by changing it to permanganate ion. The steel is first dissolved in nitric acid,
    13·1 answer
  • Why is it important to keep high acid food away from zinc coated tub
    9·1 answer
  • What happens to the ratio of oxygenated hbo2(aq) to deoxygenated hb(aq), i.e. , when there is a high pressure of oxygen, po2(g),
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!