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
Nata [24]
2 years ago
10

How many moles of NaCl are there in 3.90 x 10^24 particles?

Chemistry
1 answer:
vagabundo [1.1K]2 years ago
5 0

Answer:

6.48 moles

Explanation:

One mole of a substance is equal to 6.022*10^23 particles which is called Avagadro's number.

6.022*10^23 = 1 mole

3.90*10^24 = x moles

x = (3.90*10^24*1) / (6.022*10^23) = 6.48 moles

You might be interested in
Determine the percentage of carbon and hydrogen in ethane C2H6 if the molecular weight is 30.
Naddika [18.5K]

Answer:

Percentage of carbon:

{ \tt{ =  \frac{24}{30}  \times 100\%}} \\  = 80\%

Percentage of hydrogen:

{ \tt{ =  \frac{6}{30}  \times 100\%} } \\  = 20\%

8 0
3 years ago
Can you help me with 2 and 3 please
Citrus2011 [14]
Bacteria --> corn --> mouse --> hawk

5 0
3 years ago
1. what is an ethical concern about biotechnology
Anastasy [175]

Answer:

1. There are so many ethical concerns about biotechnology, some Ethical issues that arise from the application of modern biotechnologies include:

Discrimination of individuals because of their health or health history as a result of knowing their genetic information,  minimizing harms while maximizing benefits, Interference with nature, privacy.

2. a. Plants (maize, rice)

   b. Fish (GloFish)

3. For individuals, biotechnology has helped in the prevention and treatment of a wide range of diseases. For society, biotechnology saves time, improves the health and quality of food through a reduction in the use of pesticides and it can create new viruses and bacteria that cause diseases. Biotechnology could address global change since more genetically modified plants are grown.

8 0
3 years ago
"What volume of" a 0.300 M BaF2 "solution is needed to prepare" 240.0 mL of a 0.100 M F- solution
zhannawk [14.2K]
Use M x V = M' x V'

0.300 x V = 0.100 x 250

V = .......... ml
6 0
3 years ago
Which is the scientific notation for 8,002.5 seg?
Blizzard [7]
8,002.5 would be written as 
8.0025 x 10 and 3
because you move the decimal place 3 times to the left.
7 0
3 years ago
Other questions:
  • A biology student wants to conduct a study of how the amount of food affects weight gain for mice. He sets up four cages with a
    12·1 answer
  • Calculate the solubility at of AgCl in pure water and in a ).0010 M solution. You'll find data in the ALEKS Data tab. Round both
    8·1 answer
  • Which of the following are chemicals? (1) clothing (2)food (3)fuels (4)all of the above
    14·2 answers
  • A hygroscopic compound readily absorbs water from the air. This water can be removed by gently heating the compound. 5.24 g of a
    13·1 answer
  • How to balance N2O5 +H2O --->HNO3
    11·1 answer
  • How many moles of iron is 6.022 x 10^22 atoms of iron? (Report answer as a number rounded to one place past the decimal.) *
    8·1 answer
  • The domain level divides
    12·1 answer
  • QUICK!!! Justin is walking around an area that has few trees and many tall grasses.
    14·1 answer
  • This is my almost last question plsss help
    6·2 answers
  • What is the number of atoms of oxygen in 0.1 mol of CuSO4.5H2O? & explain​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!