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tatyana61 [14]
3 years ago
10

Distinguish between accuracy and precision in measurements

Chemistry
1 answer:
nignag [31]3 years ago
7 0

The accuracy is associated with magnitude of fractional error or relative error in that measurement

the precision of a measurement is associated with least count of the measuring instrument.

precision does not mean accuracy but both are highly demanded while making measurements in physics.

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How many atoms of potassium are in 0.250 mol of potassium carbonate, k2co3?
Verizon [17]
The  number  of  potassium  atom  that  are  in  0.25  moles   potassium  carbonate  is  calculated  as  follows

by  use  of Avogadro  contant

1  mole=  6.02  x10^23   atoms

what  about  0.25 moles,   
by  close  multiplication

{0.250 moles  x 6.02  x10^23}  /  1 mole  =  1.505  x10^23  atoms
4 0
3 years ago
Which refers to the chemical name for NO2?
Anna35 [415]

Answer:

C

Explanation:

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Hi everyone can anyone help with this, the question and diagram is in the pic thx!
seraphim [82]

Answer:

QP

Explanation:

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8 0
3 years ago
Part iv. Is the neutralization reaction enthalpy favored?
Burka [1]

Yes, it is a special case of enthalpy of neutralization.  

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The standard enthalpy change of neutralization is the enthalpy change when solutions of an acid and an alkali react together under standard conditions to produce 1 mole of water.

5 0
3 years ago
How does H2O represent compounds
Leno4ka [110]

Answer:

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7 0
2 years ago
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