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
alexandr402 [8]
3 years ago
15

Perform the following calculation, 39 / 24.2 . The answer rounded to the correct number of significant figures is which of the f

ollowing?
Chemistry
1 answer:
levacccp [35]3 years ago
4 0

Answer:

Hey!

39 / 24.2 = 943.8

Explanation:

943.8 to 2 s.f (best option for rounding)

= 940

ANSWER = 940

HOPE THIS HELPS!

You might be interested in
This element exists in adundance in the sun.Explain how you would go about capturing sunlight.Would this captured sunlight conta
nasty-shy [4]
Yes because the sun will make alots of thing grow
4 0
3 years ago
6. What's the structure of PF? Is it polar or non-polar?
charle [14.2K]

1234567891011121314151617181920

4 0
3 years ago
when a solution of sodium chloride is added to a solution of copper(ii) nitrate, no precipitate is observed. Write the molexular
zhuklara [117]

Explanation:

1.

Cu(NO3)2 + 2NaCl(aq) --> CuCl2(aq) + 2NaNO3(aq)

2.

Cu(NO3)2 + 2NaOH(aq) --> Cu(OH)2(s) + 2NaNO3(aq)

A light blue precipitate of Cu(OH)2 is formed and NaNO3 in solution.

3.

Cu(NO3)2(aq) --> Cu2+(aq) + 2NO3^-2(aq)

2NaOH(aq) --> 2Na+(aq) + 2OH-(aq)

Cu2+(aq) + 2OH-(aq) --> Cu(OH)2(aq)

2Na+(aq) + 2NO3^-2(aq) --> 2NaNO3(aq)

4.

The reaction in both Questions 1 and 2 is called Double displacement reaction. A double-replacement reaction exchanges the cations and/or or the anions of two ionic compounds. A precipitation reaction is a double-replacement reaction in which one product is a solid precipitate (precipitated) while the other in solution.

Since the cation and anions in Qustion 1 were exchanged, the same was done for Question 2, hence the identity of the precipitate in Question 2 was got.

6 0
3 years ago
Copper conducts heat well.<br> physical<br> chemical
OverLord2011 [107]

Answer:

Physical property

Explanation:

We can visualize the property without the need to do any experiments.

7 0
3 years ago
Pls help! I'll give u 10 points and the brainlest answer!!!​
alekssr [168]

Answer:

371km

Explanation:

the lower the more fuel there is

7 0
3 years ago
Read 2 more answers
Other questions:
  • True or false. Gas particles never touch each other. A. True; gas particles move too rapidly to ever touch. B. False; gas partic
    6·2 answers
  • What is the best description of the relationship between emerging scientific ideas and open-mindedness?
    12·1 answer
  • A solution is prepared from 26.7 g of an unknown compound and 116.2 g acetone, C3H6O, at 313 K. At this temperature the vapor pr
    8·1 answer
  • What is the average salinity of ocean water
    7·2 answers
  • Is 2H + O2 →2H2O a balanced chemical equation? Is it obeying the law of conservation of matter?
    8·2 answers
  • An experiment was undertaken to determine the effect of different liquids upon the swelling of a vulcanized sample of natural ru
    5·1 answer
  • What should the person do?
    10·1 answer
  • A permeation membrane separates an inlet air stream, F, (79 mol% N2, 21 mol% O2), into a permeate stream, M, and a reject stream
    9·1 answer
  • Pt5 science......<br><br> Select correct answer ♡ !
    12·2 answers
  • water is set on the stove to boil as it absorbs the temperature increases from 27.5°C to 56.0°C. if there was 325g of water adde
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!