Chemistry Middle School

You have a substance with a length of 2 cm, width of 3 cm, and a height of 4 cm. Its density is known to be .5 g/cm3. What is the mass of the sample you have?

Answers

Answer 1

Explanation:

They are related by the the density triangle.

Explanation:

They are related by the the density triangle.

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d =

m

V

m = d×V

V =

m

d

DENSITY

Density is defined as mass per unit volume.

d =

m

V

Example:

A brick of salt measuring 10.0 cm x 10.0 cm x 2.00 cm has a mass of 433 g. What is its density?

Step 1: Calculate the volume

V = lwh = 10.0 cm × 10.0 cm × 2.00 cm = 200 cm³

Step 2: Calculate the density

d =

m

V

=

433

g

200

c

m

³

= 2.16 g/cm³

MASS

d =

m

V

We can rearrange this to get the expression for the mass.

m = d×V

Example:

If 500 mL of a liquid has a density of 1.11 g/mL, what is its mass?

m = d×V = 500 mL ×

1.11

g

1

m

L

= 555 g

VOLUME

d =

m

V

We can rearrange this to get the expression for the volume.

V =

m

d

Example:

What is the volume of a bar of gold that has a mass of 14.83 kg. The density of gold is 19.32 g/cm³.

Step 1: Convert kilograms to grams.

14.83 kg ×

1000

g

1

k

g

= 14 830 g

Step 2: Calculate the volume.

V =

m

d

= 14 830 g ×

1

c

m

³

19.32

g

= 767.6 cm³

Related Questions

help me plssssssssssssssss

Identify which of the following best explains the transformation process in photosynthesis.

Answers

D. Light energy becomes Chemical energy.

In photosynthesis, the transformation process is in which the light energy is converted into chemical energy. Therefore, option (D) is correct.

What is Photosynthesis?

Photosynthesis can be defined as a process by which phototrophs transform sunlight into chemical energy. This chemical energy can be stored in the form of sugars such as glucose, which are formed from water and CO₂ gas.

In the Photosynthesis process, the components are carbon dioxide and water which yield products oxygen gas, and glucose. Therefore, the photosynthesis reaction is generally said to be an endothermic reaction because the energy is provided in the form of sunlight.

[tex]6CO_2 +6H_2O\longrightarrow C_6H_{12}O_6 +6O_2[/tex]

Each chloroplast in green plants contains a green-colored pigment called chlorophyll which is mandatory for this process to occur. Sunlight is absorbed by the chlorophyll of the plants whereas carbon dioxide gas and oxygen gas enter via the tiny pores of the stomata of leaves.

Learn more about Photosynthesis, here:

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ONLY answer if you know 100% its correct. this means if your not sure, don't answer.

Answers

Answer:

C IS THE CORRECT ANS BECAUSE GEO THERMAL ENERGY IS PRODUCED FORM CORE OF THE EARTH

WHICH IS VERYY HOT...

Answer:

the answer is c

Explanation:

The earth's internal heat

5 stars?

Which is not a scientific theory?


a.
Energy in a system can neither be created nor destroyed.


b.
Characteristics of organisms or populations change over time from generation to generation.


c.
Earth’s outer layer is divided into plates that move around.


d.
Light has both a particle nature and a wave nature.

Answers

Answer:

I think C

Explanation:

C is the best answer. According to me, It is not a scientific theory. Hopes this helped.

The graph shows the consumption of gasoline and diesel fuels by vehicles in the United States for a period of 40 years.


What consequence would likely result from the data trend presented in the graph?

A. It would lead to an increase in deforestation.

B. It would lead to an increase of global temperatures.

C. It would lead to a decrease in oil pollution of a nearby marine environment.

D. It would lead to a decrease in contamination of groundwater resources.

Answers

Answer:

B. It would lead to an increase of global temperatures.

Explanation:

Gas burns when it is hot. Therefore the more gas that our cars consume, the hotter the air will be when the car releases those gas vapors. Causing the air to become hotter.

Hope this helped <3 :) brainliest?

It is B as when gasoline is burnt it produces carbon dioxide which traps heat

This is helpful but using fuel increases temperature

Carrying capacity is

A
anything that limits how many organisms can live in an ecosystem.

B
how green plants make carbohydrates.

C
the process of respiration.

D
the number of organisms an ecosystem can support

Answers

Answer:

I believe it's D

Explanation:

D because it makes the most sense

Write an equation for the reaction that takes place in a luminous flame assuming the laboratory gas is Butane

Answers

Answer:

Fire's basic combustion equation is: fuel + oxygen —> carbon dioxide + water, a line many of us had drummed into us by school teachers. However, combustion reactions do not proceed directly from oxygen to carbon dioxide.

Explanation:

Fire's basic combustion equation is: fuel + oxygen —> carbon dioxide + water, a line many of us had drummed into us by school teachers. However, combustion reactions do not proceed directly from oxygen to carbon dioxide.

The equation for luminous flame assuming the laboratory gas is butane is fuel + oxygen → [tex]CO_{2} + H_{2}O[/tex].

What is butane?

Natural gas, the source of butane, would be a colorless, odorless, but also shapeless gas by nature. This kind of gas is extremely prevalent throughout the world and seems to be comparatively cheap to mine as well as produce.

What is a luminous flame?

A burning flame that is clearly seen would be called a luminous flame.

When fuel is reacted with oxygen gas then it will form carbon dioxide and water. It can be written as:

fuel + oxygen → [tex]CO_{2} + H_{2}O[/tex].

To know more about luminous flame and butane

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A sample of a pure substance with a density of 3 g/mL is separated into two pieces. One piece has a mass of 50 g and the other piece has a mass of 25 g.
What is the density of the larger piece?

Answers

Answer: The two pieces have the same density of 3g/mL.

Explanation: the density won't change based on the size or amount of the substance. the density is pre-set (for every X there is y weight, this is always constant).

Help asap! if u answer correct Ill give brainliest!!

Answers

Answer:

I believe it means The universe will exploder or The universe is expanding

Explanation:

Which statement best defines the center of an atom and what it is made of?



The center of an atom is the electron, and it is made up of protons.

The center of an atom is the nucleus, and it is made up of protons and neutrons.

The center of an atom is the proton, and it is made up of electrons and neutrons.

The center of an atom is the nucleus, and it is made up of charges.

Answers

The center is made of electrons and surrounded by protons

9. If you have a sample of an element with a density of 8 g/mL and a volume of 10 mL and you cut it in half.
What is the density of each half?

What is the volume of each half?

Answers

It says cut it in half so the density would become 4g/mL and the Volume would become 5mL
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