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bonufazy [111]
2 years ago
12

What should you do during a titration when you notice the indicator start to indicate the approach of the equilibrium point? Add

the second reactant faster. Add the second reactant slower. Add more indicator.
Chemistry
2 answers:
Ksju [112]2 years ago
7 0

Answer:

Add the second reactant faster.

Explanation:

In titration we take, we take a reactant (titrand) in conical flask. The second reactant (titrant) is filled in burette.

Now we add indicator in the first reactant (taken in flask) and start adding the second reactant from burette.

The reaction starts and when it appears that we are approaching the end point, we start adding the second reactant slower, in order to avoid missing the end point. If we add the second reactant fast, it may lead to addition of excess of reagent and thus may affect our calculations and readings.

Leni [432]2 years ago
6 0

B. Add the second reactant slower.

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A car travels a constant speed of 60 Km/h for 3 hours what is the total distance the car has traveled?
ohaa [14]

Answer:

180 miles

Explanation:

60 × 3 = 180

[character limit pass]

7 0
2 years ago
Aluminum has a density of 2.70 g/cm3. what would be the mass of a sample whose volume is 10.0 cm3?
anastassius [24]
Hey there!

Density = 2.70 g/cm³

Volume = 10.0 cm³

Therefore:

Mass = density *  volume

Mass = 2.70 * 10.0

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3 0
3 years ago
An unknown compound contains only carbon, hydrogen, nitrogen, and oxygen. Complete combustion of a 2.77 g sample of the compound
alisha [4.7K]

The molecular formula of the unknown compound is determined as  C₉H₁₁NO₂.

<h3>Molecular formula of the compound</h3>

The molecular formula is calculated as follows;

CHNO  +  O₂ ------------> CO₂  + H₂O

Mass of carbon, C:  = (6.64 x 12)/44 = 1.81 g in 2.77 g sample

Mass of hydrogen, H: = (1.67 x 2)/18 = 0.186 g in 2.77 g sample

Mass of Nitrogen, N: = (2.77 x 0.143)/1.69 = 0.234 g

Mass of oxygen, O:  = 2.77 g - 1.81 g - 0.186 g - 0.234 g = 0.54 g

<h3>molar ratio of the elements: </h3>

C = 1.81 g = 0.15 mol

H = 0.186 g = 0.186 mol

N = 0.234 g = 0.017 mol

O = 0.54 g = 0.0337 mol

divide through with the smallest number of moles (0.017 mol);

C = 9

H = 11

N = 1

O = 2

Molecular formula = C₉H₁₁NO₂

Check the molar mass of the compound = (9 x 12) + (11 x 1) + (14) + (2 x 16) = 165 g/mol

Thus, the molecular formula of the unknown compound is determined as  C₉H₁₁NO₂.

Learn more about molecular mass here: brainly.com/question/21334167

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4 0
1 year ago
How atomic radius changes across a period and down a group in the periodic table?
allochka39001 [22]

Answer:

An atom gets larger as the number of electronic shells increase; therefore the radius of atoms increases as you go down a certain group in the periodic table of elements. In general, the size of an atom will decrease as you move from left to the right of a certain period.

Explanation:

3 0
2 years ago
Which term best describes the role of hydrogen gas in the formation of water molecules?
kobusy [5.1K]
The answer is D, reactant.
6 0
3 years ago
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