All categories

1 year ago

Part A

Biology

1 answer:

svetlana [45]1 year ago

4 0

Considering the definition of density, you obtain that:

Part A: the density of gold is 19.3 g/cm³.
Part B: the density of iron is 7.8 g/cm³.

<h3>Definition of density</h3>

Density is defined as the property that allows to measure the amount of mass in a certain volume of a substance.

The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density= mass÷ volume

It can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

<h3>Density in this case</h3>

In this case, you know that:

A sample of gold has mass of 38.6 grams and a volume of 2 cm³.
A sample of iron has a mass of 46.8 grams and a volume of 6 cm³.

Replacing in the definition of density:

Gold: density= 38.6 g÷ 2 cm³
Iron: density= 46.8 g÷ 6 cm³

Solving:

<u><em>Gold: density= 19.3 g/cm³</em></u>
<u><em>Iron: density= 7.8 g/cm³</em></u>

In summary, the density of gold is 19.3 g/cm³ and the density of iron is 7.8 g/cm³.

Learn more about density:

brainly.com/question/952755

brainly.com/question/1462554

#SPJ1

You might be interested in

What is upwelling and why is it important?

nignag [31]

Upwelling is a process in which deep, cold water rises toward the surface. The water that rises to the surface is Rich in nutrients, which fertilizes the surface water.

6 0

4 years ago

Read 2 more answers

Which characteristics of an insect population enable it to adapt and develop

Svetlanka [38]

Answer:

Resistance in insects develops when the same insecticide (or class of insecticides) is used against a pest population over and over again. Some insects will survive the same dose that kills their friends. Those that survive pass on that survival trait to their offspring.

Explanation:

Hope this helps

5 0

3 years ago

Two or more atoms held together in molecules by relatively strong forces called

Varvara68 [4.7K]

Covalent bonds I hope it helps.

4 0

3 years ago

Read 2 more answers

How do human perceive the black color

Korvikt [17]

Answer: Photoreceptor cells

Explanation:

The human eye and brain together translate light into color. Light receptors within the eye transmit messages to the brain, which produces the familiar sensations of color. ... Rather, the surface of an object reflects some colors and absorbs all the others. We perceive only the reflected colors thus, we have two types of photoreceptor cells, known as rods and cones. Cone cells deal in colour, while rod cells allow us to see in grayscale in low-light conditions, for example at night.

8 0

3 years ago

Read 2 more answers

When describing a group of animals, you speak about an ancestral species and some but not all of its descendants. This is an exa

disa [49]

Answer:

This is an example of a <u>paraphyletic group</u>.

Explanation:

Paraphyletic groups is a group that contains only part of the descendants of a common ancestor. A group is constituted as paraphyletic when one or more holophyletic groups are subtracted from a clade (evolutionary branch). Traditional classifications are loaded with paraphyletic groups, such as invertebrates, pteridophytes, opposites. In each of these cases the group is defined by the exclusion of a smaller group within a larger one. An example is the reptiles are a paraphyletic group, since when we refer to them we are excluding mammals and birds even though they are taxa that evolutionarily descend from reptiles.

8 0

3 years ago