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3 years ago

The major component in a solution is called the solute true

1 answer:

3 0

Answer:
False: <span>The major component in a solution is called the Solvent.

Explanation:
Solutions are the Homogeneous mixtures of two or more substances. Mainly the components are divided into two catogories....

1) Solvent:
The component which is the major or which is present in large amount is called solvent.

Example: In water salt solution water is the solvent.

2) Solute:
</span>The component which is the minor or which is present in less amount is called solute.

Example: In water salt solution salt is the solute.

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Theoretical yield and percentage yield of:

dem82 [27]

Answer:

Theoretical yield of potassium nitrate = 1.21 g

Theoretical yield of lead iodide = 2.77 g

Explanation:

Given data:

Mass of Lead nitrate = 2.00 g

Mass of potassium iodide = 3.00 g

Theoretical yield = ?

Percent yield = ?

Solution:

Chemical equation:

Pb(NO₃)₂ + 2KI → PbI₂ + 2KNO₃

Now we will calculate the number of moles of lead nitrate.

Number of moles = mass/ molar mass

Number of moles = 2.00 g/ 331.2 g/mol

Number of moles = 0.006 mol

Number of moles of KI:

Number of moles = mass/ molar mass

Number of moles = 3.00 g/ 166 g/mol

Number of moles = 0.02 mol

Now we will compare the moles of lead nitrate with potassium iodide with lead iodide and potassium nitrate.

Pb(NO₃)₂ : PbI₂

1 : 1

0.006 : 0.006

Pb(NO₃)₂ : KNO₃

1 : 2

0.006 : 0.006×2 =0.012

KI : PbI₂

2 : 1

0.02 : 1/2×0.02 = 0.01

KI : KNO₃

2 : 2

0.02 : 0.02

Theoretical yield of both product depend upon lead nitrate because it is limiting reactant.

Theoretical yield of potassium nitrate:

Mass = number of moles × molar mass

Mass = 0.012 mol × 101.1 g/mol

Mass = 1.21 g

Theoretical yield of lead iodide:

Mass = number of moles × molar mass

Mass = 0.006 mol × 461.01 g/mol

Mass = 2.77 g

Percentage yield can not be determine because actual yield is not given.

7 0

2 years ago

In 4.0 years , 40.0 kilograms of elemnt a decays to 5.0 kilograms

alexira [117]

This problem is requiring us to find the half life of the element. We can solve this problem by using the equation as shown: A=Aoe^-(ln2/t)T where A is the final amount (5 kilogram), Ao is the initial amount (40.0 kilogram), t is the half-life (required) and lastly T time elapsed (4.0 years). Plug in the values in the equation and you should get 1.33 years as the half life.

3 0

3 years ago

Taking medicine can cause driving problems

BigorU [14]

Answer:

shorten reaction time

...........

6 0

2 years ago

Are solar and lunar eclipses processed by the movements of the Earth and moon?

Inga [223]

Explanation:

As the Earth rotates on its axis and revolves around the Sun, several different effects are produced. When the new moon comes between the Earth and the Sun along the ecliptic, a solar eclipse is produced. When the Earth comes between the full moon and the Sun along the ecliptic, a lunar eclipse occurs.

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2 years ago

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Which of the following methods would be the best method for separating oil from water?

vazorg [7]

Oil and water can separate by utilizing a separating funnel, oil and water are totally insoluble in one another. The water structures lower while the oil forms the upper layer.

8 0

2 years ago