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
xxMikexx [17]
3 years ago
15

Calculate the concentration imports per million ppm of DDT if a sample size of 5000 g contained 0.10 g DDT

Chemistry
1 answer:
nevsk [136]3 years ago
3 0

Answer:

20ppm

Explanation:

parts per million are defined as the mass of solute in mg (In this case, mass of DDT) per kg of sample.

To solve this question we must find the mass of DDT in mg and the mass of sample in kg:

<em>Mass DDT:</em>

0.10g * (1000mg / 1g) = 100mg

<em>Mass sample:</em>

5000g * (1kg / 1000g) = 5kg

Parts per Million:

100mg / 5kg =

<h3>20ppm</h3>
You might be interested in
2)
vodomira [7]

Answer:

Final volume 30.513 L.

Explanation:

According to general gas equation:

P₁V₁/T₁ = P₂V₂/T₂

Given data:

Initial volume = 17 L

Initial pressure = 2.3 atm

Initial temperature = 299 K

Final temperature = 350 K

Final volume = ?

Final pressure = 1.5 atm

Solution:

P₁V₁/T₁ = P₂V₂/T₂

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 2.3 atm × 17 L × 350 K / 299 K × 1.5 atm

V₂  =  13685 atm .L.  K  / 448.5 K . atm

V₂  = 30.513 L

6 0
2 years ago
HCL ejercicio de química
marin [14]
What I can’t understand I’m American
5 0
2 years ago
Read 2 more answers
Give the products of the reaction of butanal, with: (a) sodium borohydride, in methanol (b) hydrogen cyanide, with catalytic cya
miss Akunina [59]

Answer:

Answers are given below

Explanation:

(a) Aldehyde groups are reduced by sodium borohydride in methanol to give alcohol.

So, butanal produces butanol on reaction with sodium borohydride in methanol.

(b) Aldehyde forms cyanohydrin when they are treated with HCN with catalytic cyanide.

(c) Aldehydes are oxidized by potassium dichromate in dil. sulphuric acid to produce carboxylic acid.

(d) Aldehyde produces acetal with methanol and a trace amount of acid catalyst.

(e) Aldehyde gives condensation reaction with CH_{3}CH_{2}NH_{2} to produce imine.

Structures of products for the given reaction has been shown below.

4 0
3 years ago
Why is publishing your results important in science?
aleksandr82 [10.1K]
Answer: A

Hope I helped
8 0
3 years ago
What is one Scientific Law or Scientific Theory that affects our life?​
iren [92.7K]

Answer:

Does the Big Bang theory count?

8 0
3 years ago
Other questions:
  • A compass needle points north when let it move freely. why do scientist think this happened?​
    11·1 answer
  • Consider this reaction mechanism: Step 1: Mo(CO)6→ Mo(CO)5 + CO Step 2: Mo(CO)5 + P(CH3)3→ Mo(CO)5P(CH3)3 Which of these is an i
    7·1 answer
  • Balancing equations
    6·1 answer
  • In which of the following sets do all species have the same number of electrons
    11·2 answers
  • Which type of bonding is most important in ch3ch2ch2ch2ch2ch3?
    11·1 answer
  • Porcelain, paper, glass, and rubber are all examples of electrical
    12·2 answers
  • Consider the electrolysis of molten barium chloride, BaCl2. (a) Write the half-reactions. (b) How many grams of barium metal can
    7·1 answer
  • What is an Isolated Atom?​
    15·1 answer
  • Plus ten points)Jamie set up the following circuit. She noticed that the bulbs were not working. How can Jamie fix the circuit t
    11·1 answer
  • Weathering and Erosion Unit Test
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!