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3 years ago

Below are some of the steps completed in the titration process.

Chemistry

2 answers:

serg [7]3 years ago

8 0

The steps are as followed in occurrence: (II),(III),(IV),(I)

Marrrta [24]3 years ago

4 0

The given process is that of an acid-base titration where the base is taken in the burette and is being titrated against an acid taken in a flask. The steps in the correct order are:

1) Transfer a known volume of acid to an Erlenmeyer flask.

2) Add three drops of chemical indicator to the acid.

3) Position the Erlenmeyer flask under the buret.

4) Add base from the buret to the acid.

Ans: ii) , iii), iv) and i)

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Which has a greatest mass, one atom of carbon, one atom of hydrogen, or one atom of litium

zysi [14]

Answer:

One atom of carbon

Explanation:

5 0

3 years ago

Which would be most suitable for measuring 2.7 mL of ethanol for addition to a reaction with acidified dichromate?

pochemuha

Answer : The correct option is, (C) 10-mL volumeric pipet.

Explanation :

Graduated cylinder : It is a measuring cylinder that is used to measure the volume of a liquid. It has a narrow cylindrical shape. The marked line drawn on the graduated cylinder shows the amount of liquid that has been measured.

Pipet : It is a type of laboratory equipment that is used to measure the volume of a liquid. It is small glass tube and the marked line drawn on the pipet. It is used to accurately measure and transfer of volume of liquid from one container to another.

Volumetric flask : It is a type of laboratory tool that is also used for measuring the volume of liquid. It is used to make up a solution to a known volume. It measure volumes much more precisely than beakers.

Beaker : It is a type of laboratory equipment that has cylindrical shape and it is used for the mixing, stirring, and heating of chemicals.

As per question, we conclude that the pipet is most precise than other devices because in pipet the marking lines are more accurate. Thus, it can be used to measure volume to precision.

Hence, the correct option is, (C) 10-mL volumeric pipet.

8 0

3 years ago

The sea water has 8.0x10^-1 cg of element strontium. Assuming that all strontium could be recovered, how many grams of strontium

PilotLPTM [1.2K]

984 grams of strontium will be recovered from 9.84x10^8 cubic meter of seawater.

Explanation:

From the question data given is :

volume of strontium in sea water= 9.84x10^8 cubic meter

(1 cubic metre = 1000000 ml)

so 9 .84x10^8 cubic meter

$\frac{9 .84x10^8}{1000000}$ = 984 ml.

density of sea water = 1 gram/ml

from the formula mass of strontium can be calculated.

density = $\frac{mass}{volume}$

mass = density x volume

mass = 1 x 984

= 984 grams of strontium will be recovered.

98400 centigram of strontium will be recovered.

Strontium is an alkaline earth metal and is highly reactive.

4 0

3 years ago

Which has the greatest mass, box of rocks box of paperclips or empty box

olga nikolaevna [1]

The density of an ordinay rock is close to 3 g/cm^3 wihle the density of the paper clips is close to 8 g/cm^3 (the density of steel), then equal apparent volumes (same box) will contain different mass, being of course the mass of the box with paper clips much higher than that of the box with rocks.

7 0

3 years ago

1. How will you differentiate physical from chemical change in terms of the

Tpy6a [65]

Answer:

In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.

3 0

3 years ago