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
charle [14.2K]
2 years ago
6

Perform the following

Chemistry
1 answer:
strojnjashka [21]2 years ago
7 0

Answer:

4 sig figs: 20.18

Explanation:

the smallest amount of digits was 4 in the expression

You might be interested in
Determine the oxidation state of the metal ion in [co(nh3)5br]2+. express your answer as an integer.
Zanzabum
                                           [Co(NH₃)₅Br]²⁺

Ligands and charges on them,

                             5 × NH₃  =  5 × 0  =  0

                             1 × Br⁻¹  =  1 × -1  =  -1

Charge on sphere  =  +2

So, putting values in equation,

                                       Co + (0)₅ - 1  =  +2

                                       Co + 0 - 1  =  +2

                                       Co - 1  =  +2

                                       Co  =  +2 + 1

                                       Co  =  +3

Result:
           Oxidation state of Co in [Co(NH₃)₅Br]²⁺ is +3.
7 0
3 years ago
Which mineral group is composed of compounds that contain atoms of sulfur and one or more metals?
Oksi-84 [34.3K]

Answer:

The answer to your questions is: C. Sulfides

Explanation:

A. Phosphates  these compounds do not have sulphur, they are composed by phosphate and oxygen, So this answer is wrong.

B. Sulfates  are formed by sulphur and oxygen, not for a metal, then this is not the right answer.

C. Sulfides  are molecules formed by a metal and sulphur, this is the anwser to the question.

D. Silicates are formed by sillicon and oxygen, this option is incorrect.

8 0
3 years ago
Coefficient -
Nutka1998 [239]

Answer:

sub for NA-

Explanation:

plss give brainliest

3 0
3 years ago
Read 2 more answers
As an object falls freely near the earths surface , the loss in gravitational potential energy of the object is equal to its wha
Nitella [24]
Increase in kinetic energy as well as energy loss to the surroundings in the form of heat ( negligible)
4 0
3 years ago
Read 2 more answers
Please help me with chem, it would be very appreciated!
Lelu [443]

To determine the shapes of molecules, we must become acquainted with the Lewis electron dot structure. Although the Lewis theory does not determine the shapes of molecules, it is the first step in predicting shapes of molecules. The Lewis structure helps us identify the bond pairs and the lone pairs.

Please mark BRAINLIEST.

5 0
3 years ago
Other questions:
  • Help me please !!!
    6·1 answer
  • Approximately what percentage of the energy in the plants is passed on to the animals that eat them?
    12·1 answer
  • Which term describes the reaction process in a fission reaction?
    10·2 answers
  • What is the "major drawback" to using word equations?
    11·2 answers
  • El acido nitrico se obtiene industrialmente por oxidacion de amoniaco (nh3), de acuerdo con la ecuacion: 4nh3 + 702 - h2o + hno2
    15·1 answer
  • #3. How many liters are in 244 g of Krypton (Kr) gas (83.80 g/mol)?
    13·1 answer
  • What could reduce the heat island effect around cities?
    11·1 answer
  • Find the unit price: 12 eggs for $3. How much is the cost per (one) egg?.
    6·1 answer
  • PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANKS PLS ASAP PLS PLS HELP ASAP THANKS
    15·1 answer
  • Which equation shows ejection of an alpha particle?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!