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3 years ago

Nêu các ứng dụng cơ bản phương pháp đo chuẩn độ oxy hoá khử

Chemistry

1 answer:

Vesnalui [34]3 years ago

5 0

Answer:

(I hope this helps enough)

Explanation:

A wide spectrum of inorganic analytes are analyzed using redox titrimetry. By testing an unknown analyte against a standardized titrant, a redox titration (also known as an oxidation-reduction titration) can correctly calculate its concentration. It is used to determine the presence of organic analytes.

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The estimated costs for remodelling the interior of an apartment are: three 1-gallon cans of paint at $15.44 each, two paint bru

Vlad1618 [11]

The total estimated cost with the appropriate significant figures is

$195,13.

Any two non-zero digits that are separated by a zero are important. For instance, the number 108.0097 has seven significant digits. Every zero that is both to the right and left of a non-zero digit and the decimal point is never meaningful. For instance, the number 0.00798 had three significant digits.

Simply multiply the required number of goods by their individual costs, then add them all up to calculate this:

3*13,69= 41,07 2*9,53=19,06 \s1*135= 135

Total cost: $41,07 plus $19,06 plus 135 equals $55,13.

Thus, the overall price will be $195,13.

Learn more about significant figures here-

brainly.com/question/14359464

#SPJ9

7 0

2 years ago

You measure salt water in a tank to have a density of 1.02 g/mL. A balloon weighs 2.0 g and you weights have a mass of 30.0 g ea

Elden [556K]

Weight of the balloon = 2.0 g

Six weights each of mass 30.0 g is added to the balloon.

Total mass of the balloon = 2.0 g + 6*30.0 g = 182 g

Density of salt water = 1.02 g/mL

Calculating the volume from mass and density:

$182g*\frac{mL}{1.02g} =178mL$

Converting the volume from mL to cubic cm:

$178 mL * \frac{1cm^{3} }{1mL} =178cm^{3}$

Assuming the balloon to be a sphere,

Volume of the sphere = $\frac{4}{3}$ π $r^{3}$

$178 cm^{3} = \frac{4}{3}(\frac{22}{7})r^{3}$

r = 3.49 cm

Radius of the balloon = 3.49 cm

Diameter of the balloon = 2 r = 2*3.49 cm = 6.98cm

4 0

3 years ago

Sub atomic particle mass

melamori03 [73]

1. neutron
2. proton which is positive
3. electron which is negative

4 0

3 years ago

Please someone help me write a Conclusion about climate change

Tatiana [17]

Answer:

Here u go

Explanation:

climate change...climate change is when the weather changes drastically and the adaptations change so that some animals environment are no longer suitable for them

I tried to hel

4 0

3 years ago

Oxidation Number of fe in fe3o4

oee [108]

Oxidation number of fe in the compound...,

Let the oxidation number of (Fe) be x

The oxidation number of oxygen(o) is (-2)

; 3x + 4(-2) = 0...where zero is the total charge on the compound(fe3o4)

; 3x = 8...then divide both sides by 3

Oxidation number of fe is( 2.67 )

4 0

3 years ago