How does a graph with no trend differ from a graph with anomalous data points

Answer:

Gravity is the force which helps the objects to remain in their place. In space, it helps the planets to revolve or rotate in their orbits. Gravity holds the planets together in the galaxy. It facilitates the planets to revolve around the sun. Gravity depends upon the mass of the body. The more the mass of the body, the more the gravitational force. The inner planets have less gravitational force than the outer planets. On the other hand, the Gravitational pull is stronger in the inner planets than the outer planets.

The presence of an atmosphere, temperature, and distance from the Sun do not affect a planet's gravity. Are the objects in the solar system still or are they in motion? The Sun's gravity pulls the planets in orbit around it, and some planets pull moons in orbit around them.

Answer:

(a) Avoid parallax error

(b) To ensure that almost all the SCN⁻ has reacted.

Explanation:

(a) Avoiding bias

A Mohr pipet is a graduated pipet. To avoid bias, you should always hold the pipet so the meniscus is at eye level.

If your eye is above or below the meniscus, you will get an incorrect reading of the volume.

(b) Excess Fe³⁺

I am guessing that you are adding different volumes of SCN⁻ to Fe³⁺ to generate a Beer's Law plot of the concentration of FeSCN²⁺.

The problem is that the reaction is an equilibrium  It does not go to completion.

Fe³⁺ + SCN⁻ ⇌ FeSCN²⁺

You use a large excess of Fe³⁺ to drive the position of equilibrium to the right and make sure that almost all the added SCN⁻ is converted to FeSCN²⁺.

This is a unit conversion problem. Nm (nanometer) is smaller than mm (millimeter).

1 mm = 1/10³m = 1 x 10⁻³ m

1 nm = 1/10⁹ m = 1 x10⁻⁹ m

1 m = 1 x 10⁹ nm

Hence, 2 mm = 2 x 10⁻³ m

Then we can convert 2 x 10⁻³ m to nm by multiplying with 10⁹.

Then 2 mm = 2 x 10⁻³ m = 2 x 10⁻³ x 10⁹ nm = 2 x 10⁶ nm.

Hence, the thickness of nickel is 2 x 10⁶ nm.

Answer: The correct answer for the blank is-

B) cytoplasm.

Cytoplasm is the fluid filled compartment ( a thick, gel like substance) within the cell of a living organism that is mainly composed of water, salts, and proteins. It is surrounded by the cell membrane ( plasma membrane) and contains all the parts of cell ( such as in eukaryotic cell, it contains all the cell organelles except nucleus). It is the site for all the essential cellular processes.

Thus, option B) is the right answer.  

Answer: Option (B) is the correct answer.

Explanation:

• In a living organism, the cell which is mostly composed of water, salts and proteins is known as cytoplasm.

It is thick and gel like in nature which has fluid filled compartment.

• A chloroplast is an organelle found in the cells of plants and eukaryotic algae which are responsible for the conduction of photosynthesis.

• Nucleus is an organelle present in eukaryotic cells. It contains hereditary information of a cell and helps in controlling the growth and reproduction of cells.

• Polymers of amino acids are known as proteins. Each protein has some specific functions.

Thus, we can conclude that out of the given options cytoplasm is a gel-like substance enclosed by the cell membrane that contains the cell's organelles.

Answer:

Explanation:

Given that the volume of a piece of metal =

Mass of piece of metal= 500 g

Formula to calculate the density is given by :-

Then, the density of piece of metal is given by :-

 [Rounded to the nearest two decimal places.]

Hence, its density of piece of metal=