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
exis [7]
3 years ago
8

I’m in science class right now and I need help on these questions

Chemistry
1 answer:
vodka [1.7K]3 years ago
3 0

Answer:

hello

Explanation:

You might be interested in
The National Institute for Occupational Safety and Health (NIOSH) sets standards for CCl4 in air at 12.6 mg/m^3 of air (a time a
Licemer1 [7]

Answer:

No, it doesn't.

Explanation:

To convert ppb to mg/m³ we first need to convert to ppm, by just divide the amount by 1,000, so the concentration in the sample is 4.8 ppm.

mg/m³ = (ppm x molar mass)/molar volume

Using the molar mass in gram and the molar volume in liters, multiplying by the parts per million, we will get the concentration in mg/m³.

Molar mass of C = 12 g/mol; molar mass of Cl = 35.5 g/mol

Molar mass of CCl4 = 12 + 4x35.5 = 154 g/mol

Assuming, 25ºC and 1 atm, the molar volume of an ideal gas is 24.45 L, so:

mg/m³ = (4.8 x 154)/24.45

mg/m³ = 30.2

Which is higher than the limit of 12.6 mg/m³

6 0
3 years ago
Read 2 more answers
Which of the following is a sign a chemical reaction has occurred?
tankabanditka [31]
A solid dissolves in abolishing forms from the mixing of 2 liquids
6 0
4 years ago
Read 2 more answers
You run a “5k” for charity. How many feet do you run
Nikitich [7]

It would roughly be 16,404 feet. Or if you wanted to be more specific 16,404.2. I hope this helps.

5 0
3 years ago
Read 2 more answers
Yeast cells thrive on ice cold water *<br> True<br> оо<br> False
NemiM [27]

Answer:

TRUE

Explanation:

7 0
3 years ago
What was ernest rutherfords experiment
ohaa [14]

Answer: he shot tiny alpha particles throug a piece of gold foil.

Explanation:

6 0
3 years ago
Other questions:
  • When writing the electron configuration for an element in the d block you have to remember to lower the energy level by 1. 
    15·1 answer
  • How is the cell cycle important to some unicellular organisms?
    12·1 answer
  • I don't understand what makes a covalent bond "polar." What exactly is polarity?
    14·1 answer
  • The physician has ordered 1.0 g of tetracycline to be given every six hours to a patient . If your stock on hand is 500 mg table
    14·2 answers
  • The periodic table is based on an element's
    11·1 answer
  • Calculate the number of molecules in 15.7 mil carbon dioxide
    5·1 answer
  • ANSWER FAST PLZ!!!!!!!!
    11·1 answer
  • The graph below shows how the temperature and volume of a gas vary when
    13·1 answer
  • What is the mass of a sample containing 8.53×10 to the 24th power formula units of magnesium phosphate?
    9·1 answer
  • What is the difference between amines and amides​?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!