Chemistry Middle School

Which unit conversion allows you to convert 21.0 gallons into milliliters?


Some English and English-metric unit relationships: 1 liter = 1.057 quarts, 1 gallon = 4 quarts

Answers

Answer 1

Answer:

Explanation:

we are given

there are in 0.073 gallons

we can see that there are two non-zero places after decimals

so, there are two siginificant figures

step-1: Change gallons to quarts

we know that

1 gallon = 4 quarts

so, we can write as

step-2: Change into liter

we know that

1 liter = 1.057 quarts

or

step-3: Change into millilitre

we know that

Since, it is asking for only two significant figures

so, we can also write as

...................Answer

Related Questions

Repost:
What is weathering?

Repost:What is weathering?

Answers

Your drawing looks so good :p
Weathering is a term which describes the general process by which rocks are broken down at the Earth's surface into such things as sediments, clays, soils and substances that are dissolved in water.

Hello <3 I just need some help with periodic table of elements.
--------------------------------------------------------------------------------------------------------

What is the element's name and symbol? Sodium

Is it a metal, nonmetal, or metalloid?
Which family does it belong to?
How many protons, neutrons, and electrons does its neutral atom have?



Please help with the non-answered ones, following sodium please ^^

Answers

Answer:

11

Explanation:

An atomic number of 11 means this atom will have 11 protons. A mass number of 23 means 23 - 11 this atom will have 12 neutrons. Since this atom is neutral the positive protons must be equal to the negative electrons. This atom will have 11 electrons

Answer:

Sodium: Na

It is a metal

It's family is Alkali metals

Its atomic number is 11

It has 12 neutrons, 11 protons, 11 electrons

Answer all questions pls

1) How does the cryosphere help regulate Earth's temperature?

2) What kind of organisms are found in oceanic trenches? Describe.

3) Explain how an Estuary can support a wide variety of food webs.

4) List out and describe the factors that help meteorologists forecast weather.

Answers

Answer:

1) The cryosphere contains the frozen parts of the planet. This sphere helps maintain Earth's climate by reflecting incoming solar radiation back into space. As the world warms due to increasing greenhouse gases being added to the atmosphere by humans, the snow and ice are melting.

2) Organisms like the Frilled Shark, Giant Spider Crab. Atlantic Wolffish Pair, Fangtooth Fish, Six-Gill Shark, Giant Tube Worms, Vampire Squid, Pacific Viperfish. But there are most likely archaeabacteria which are prokaryotic bacteria or single-celled organisms. A Prokaryotic cell does not contain a nucleus. It only contains one chromosome and is a single-celled organism. It was the only form of life on earth for millions of years. Examples of a Prokaryotic cell are the different types of bacteria present today.

3) Many different types of plant and animal communities call estuaries home because their waters are typically brackish — a mixture of fresh water draining from the land and salty seawater. This unique combination of salty and fresh water creates a variety of habitats. Estuaries are full of decaying plants and animals. This makes the soil of estuaries rich in nutrients. Because the soil is so rich, lots of different plants grow in estuaries. The plants attract lots of different animals to the estuary and those animals attract other animals to the estuary.

4) Temperature, humidity, precipitation, air pressure, wind speed, and wind direction are key observations of the atmosphere that help forecasters predict the weather. These same factors have been used since the first weather observations were recorded. Observational data collected by doppler radar, radiosondes, weather satellites, buoys and other instruments are fed into computerized NWS numerical forecast models. The models use equations, along with new and past weather data, to provide forecast guidance to our meteorologists. The three main factors of weather are light (solar radiation), water (moisture) and temperature.

Explanation:

U dont have to copy and paste this put these are some ideas to use for ur answers

How to work out the relative mass of potassium? What is the calculation? ( explained very easily )

Answers

Answer:

39

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Relative Atomic Mass = Mass of one atom
———————————
(1/12)th Mass of one C12 atom

Air pressure goes from areas of high pressure to areas of low pressure.
Group of answer choices

True

False

Answers

false because when warm air rises cool air will often move in

Answer:

true

give me brainliest pls

Now explain your diagnosis. Start your argument by writing something like this: "My group believes that Elisa has/does not have ___. I think that she does/does not have the ___ condition because . . ." (Then, explain how molecules move through the body when someone has the condition you investigated, and compare that to Elisa's test results.) plz help me ;(

Answers

Answer:

Explanation:I would need more info to understand this question but explaining molecules is pretty easy tho

List examples of organisms from the movie that represent each of the six kingdoms. Monera (Archaebacteria/Eubacteria): Protista: Fungi: Plantae: Animalia

Answers

Answer:

since the movie was unlisted, i'm unable to provide you with a proper answer? sorry

Explanation:

1) Archaea / Bacteria

2)  Protists

3) Fungus

4) Plant

5) Animal

help pls i will give brainlest

help pls i will give brainlest

Answers

Answer: its 5ft tall and 12 inches

Explanation:

The answer is 5 foot 12 inches

*I’m confused? Pls help, it’s due tmr*
Modeling Tool: Two Samples at the Atomic Scale
Goal: Create a model that represents a repeating group of atoms that could make up sample 2.

*Im confused? Pls help, its due tmr*Modeling Tool: Two Samples at the Atomic ScaleGoal: Create a model

Answers

Answer:

PENTANE

Explanation:

*Im confused? Pls help, its due tmr*Modeling Tool: Two Samples at the Atomic ScaleGoal: Create a model
The answer on top is correct its pentane, a quick search will show you the structure, sadly i could t find one that looks like yours on the left so id just suggest from the info from the structures put the appropriate amount of carbon in the middle and have the hydrogen surround it. Good luck with your home work

Candice did an experiment where wondered if temperature affects how cheese molds. She put a piece of cheese next to a different heat lamp and then measured how much mold was on each cheese. What is the DEPENDENT variable?

Answers

How much the cheese molds. Since it depends on the heat lamp.

(NО LINKS,NО TAKEING PОINTS) CОMPLEТE ТHE WHOLE THING!!!
1.Which twо of the following оrganisms are prоducers in this fоod web?
Bilberry and brоwn lemming
bilberry and grizzly bear
bilberry and beаr sedge
2. Which animal is а 4th level cоnsumer (аpex predator)?
Earthwоrm
caribоu
rough legged hawk
brown lemming
3.Which animal is a primary consumer?
snоwy оwl
brоwn lemming
shоrt-tailed weasel
lichen
4.Which arrоws shоw matter mоving frоm a prоducer tо a primary consumer?
(choose the answer in the picture below)

(N LINKS,N TAKEING PINTS) CMPLEE HE WHOLE THING!!!1.Which tw of the following rganisms are prducers in
(N LINKS,N TAKEING PINTS) CMPLEE HE WHOLE THING!!!1.Which tw of the following rganisms are prducers in

Answers

Answer: I-

there u go ur answer :)

C, B, A, A Ik not positive so don’t take my word.

Is it possible for the Eurasian, North American, and South American plates to create a deep sea trench? Why or why not?

Answers

Yes,because the tectonic plates are way more deep so if they would rub the wrong way the countries could have a mass earthquake creating a deep sea trench

This is called ____________when pressure builds up until gasses can no longer escape this substance destroys everything in its path.



Fill in the blank!

Answers

Volcanoes can destroy each and every thing

Where does most fresh water exist?

Where does most fresh water exist?

Answers

Answer:

aquifers, ice caps, and glaciers I think

The answer:

(C) aquifers, ice caps and glaciers

What force causes the measurement of weight?

Answers

Answer:

Gravity

Explanation:

Gravity is what causes you to weigh more or less.

What is gravity? Gravity is the force that pulls things together. Larger things with larger masses have more gravity. When you are on Earth, you would weigh more than on the moon, about 6 times more, in fact, because the gravity on Earth is 6 times stronger.

Gravity because it pushes down on an object

there's no science in the pick a subject, so i chose chemistry. NEED HELP ASAP

there's no science in the pick a subject, so i chose chemistry. NEED HELP ASAP
there's no science in the pick a subject, so i chose chemistry. NEED HELP ASAP

Answers

Answer:Trade winds blowing in a curved manner

Explanation:Because i like the answer

polar westerlies that curve cause the poles are cooler

Which type of data would be considered qualitative data?

mass of a seed

volume of water

height of a plant

smell of a plant

Answers

D. smell of a plant


(added emojis cause it said my answer wasn’t long enough)
D. because qualitative data is data that doesnt involve numbers

“Salt Crystal Experiment”
Draw a model to describe the atomic composition of salt before the experiment and then show how it changed after the experiment.

Answers

Answer:

hope its useful ... for u

Explanation:

this is drawn by me digitally

Salt Crystal ExperimentDraw a model to describe the atomic composition of salt before the experiment
Found this on the internet hope it helps ig
Salt Crystal ExperimentDraw a model to describe the atomic composition of salt before the experiment

What compound is essential for virtually all biochemical reactions?

Please explain your answer.

Answers

Ne demek istoyusun anlamadım

What is the sub-chemichal for sub-sonic nitrogen chemichal element?

Answers

Molecular nitrogen (N2) is a chemical element whose structure is composed of

two nitrogen atoms which are tightly bound together

What is an element?

An element is a substance which cannot be split into simpler units by an ordinary chemical process.

Below are some examples of elements:

HydrogenHeliumLithiumBerylliumBoronCarbonNitrogenOxygenFluorine

So therefore, molecular nitrogen (N2) is a chemical element whose structure is composed of two nitrogen atoms which are tightly bound together

Complete question:

What is the structure of the chemical element nitrogen?

Learn more about chemical elements:

https://brainly.com/question/6258301

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I just got a new phone and it says that he works for you too but it’s so much fun and he’s like he’s going on the side lol I love it too

20 Points and Brainliest if you answer in 5 mins
Huan made a chart to study for an exam about radio waves.
under column X
Changes the frequency of a wave
is used by cell phones to transmit data
Under Column Y
changes the height of a wave
is used by television stations for pictures
Which headings best complete the chart?

A) X: Phase, Y: Pulse
B) X: Pulse, Y: Phase
C) X: AM, Y: FM
D) X: FM, Y: AM

Answers

The correct answer is D) X: FM, Y: AM

In the electromagnetic spectrum, the headings which best describe the chart are  X: FM, Y: AM.

What is electromagnetic spectrum?

The electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.

The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.

In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.

Learn more about electromagnetic spectrum,here:

https://brainly.com/question/23727978

#SPJ2

What is the scientific term for rocks formed from lava?


gabbro


rhyolite


extrusive


intrusive

Answers

Answer:

Hi! your answer is Extrusive

The Answer is extrusive

Do you think rayon when burnt will stick to the body like other synthetic fibers?

Answers

In other words, since rayon is made from the plant fiber it does not get stick to our body while we burn it
it will not stick to the body most likely

HELP ASAP!! An experiment is performed in which a crystalline substance is added to a beaker filled with room-temperature water. The following observations were made:
1. The crystals dissolve.
2. A precipitate forms.
3. The bottom of the beaker feels warm to the touch.
4. Bubbles begin to form in the water.
Which observations are evidence that a chemical reaction took place?

Answers

Answer:

observations (2), (3), and (4) provide strong evidence that a chemical reaction occurred.

Explanation:

Observations (2), (3), and (4) are evidence of a chemical reaction because a precipitate formed, energy was released (the bottom of the beaker felt warm), and bubbles were formed in the water. Observation (1) indicates a physical change, not a chemical reaction.

observations 2, 3, and 4 indicate that a chemical reaction has occurred.

Which statement describes a similarity between an apple and gasoline?

A. They both contain mechanical energy, which people and cars convert into chemical energy.
B. They both contain chemical energy, which people and cars convert into electrical energy.
C. They both contain chemical energy, which people and cars convert into mechanical energy.
D. They both contain electrical energy, which people and cars convert into chemical energy.

Answers

Answer:

The Answer is B

Explanation:

Because both gasoline and apples are full of the same energy that people use.

Answer:

B

Explanation:

The process of determining relative age is called ____________.

Group of answer choices

relative dating

absolute dating

exact dating

rock

The process of determining relative age is called ____________. Group of answer choicesrelative datingabsolute

Answers

The answer:rock explanation:

Answer:

-- I can't be too sure, but... --

Relative dating

Explanation:

Determination of the absolute age of rocks and minerals using certain radioactive isotopes.

Relative Age: The age of a rock layer compared to other layers. It can be determined by looking at the position of the rock layers.

Relative Dating: Rocks and structures are placed in order from the age of older to younger.  

These two seem to be from the same section and they connect as well, so I believe "Relative Dating" is your answer but I could be wrong nevertheless I hope this helps you!

What kind of rocks would you expect to see on Mars? What evidence supports your response?

Answers

Mars' surface is largely covered with basalt, a volcanic rock covering much of Earth's surface as well. Earth has large amounts of granite in its crust, which Mars appears to lack.
Based on the composition of the martian meteorites and the presence of plains and mountains that look like features produced by basaltic volcanism on Earth, geologists expected to find primarily basalts on Mars.

Is this right?
...........

Is this right? ...........

Answers

Yes u are very right GOODLUCK!

describe the conditions that affect the rate of a chemical reaction.

I NEED HELP WITH THIS PLEASE

Answers

Answer:

The rates at which reactants are consumed and products are formed during chemical reactions vary greatly. Five factors typically affecting the rates of chemical reactions will be explored in this section: the chemical nature of the reacting substances, the state of subdivision (one large lump versus many small particles) of the reactants, the temperature of the reactants, the concentration of the reactants, and the presence of a catalyst.

Explanation:

Reactions occur when 2 molecules effectively collide, each having minimum energetic and correct orientation.

Please Help me on this question

Please Help me on this question

Answers

acids: taste sour, has a pH less than 7
bases: tastes bitter, has a pH greater than 7
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