Hell me ASAP please

Answers

Answer 1

its air and water. if its multiple choice

Answer 2

air and water is the answer. if choosing one answer choose air

Related Questions

Below is the Hertzsprung-Russell Diagram. According to the diagram which type of star is located at 3,500K and 10^6 Luminosity?

options:

blue giant

white dwarf

red super giant

red giant

Answers

Answer:red super giant

Explanation:

just look off the sides

The average
energy of a gas depends
on its temperature.

Answers

I just need a point

. Which of the four can trap the greatest amount of heat?
Oxygen gas
Nitrogen gas
Carbon dioxide
Orone

Answers

Answer:

CO2

Explanation:

As CO2 soaks up this infrared energy, it vibrates and re-emits the infrared energy back in all directions.

I need help on this question

Answers

Answer:

The way its parts are arranged ....I think

Function is is a process or a relation that associates each element x of a set X, the domain of the function, to a single element y of another set Y.

So it means that function is the way it’s parts are arranged

What is the average pH of the Pacific Ocean between Pago Pago and Apia?

Answers

Answer:

Average ocean pH is now 8.1 and varies seasonally

Explanation:

Which statement correctly describes why a compound is a pure substance?

A compound is not a pure substance because each of its molecules is made up of the atoms of two or more different elements.
A compound is a pure substance because its molecule cannot be broken down into simpler particles by physical means.
A compound is not a pure substance because it is not an element, and only elements are pure substances.
A compound is a pure substance because it consists of two different elements, which are pure substances.

Answers

Answer:

The second statement

Explanation:

Because it can't be broken by physical means

A compound is a pure substance because its molecule cannot be broken down into simpler particles by physical means. Therefore, option B is correct.

What is pure substance ?

A kind of matter with a predictable chemical composition and physical properties is referred to as a chemical substance. According to certain references, chemical substances cannot be physically divided into their component parts.

A pure material has a predictable chemical make-up. A material is the same everywhere it is sampled. The safest pure examples for chemistry homework are elements and compounds. Gold, silver, helium, sodium chloride, and pure water are a few examples.

Water only includes one kind of molecule, making it a pure substance. Only molecules made up of one oxygen atom joined covalently to two hydrogen atoms can be found in pure water.

Thus, option B is correct.

To learn more about pure substance, follow the link;

https://brainly.com/question/24462192

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The carbon atoms in cellulose found in a log originally came from _____ absorbed by the plant. Group of answer choices

Answers

Answer: Your answer is carbon dioxide in the air

Hope this helps!

Water in ethanol solution which one of them is solvent?

Answers

Answer:

The mixture of ethanol and water is a liquid-liquid solution. The solvent is Water.

Explanation:

Beer, which is typically 2-4% ethanol, ethanol is the primary solute and water is the solvent.

Mark brainlest pls!!!! I’m sure with this ans

these are materials that allow heat to flow easily

Answers

Answer:

materials that allow heat to flow easily conductors of heat. For examples, aluminum, iron and copper.

Explanation:

Hope it helps!!!

what is an element?

Answers

Answer:

an element is a substance that cannot be broken down into any other substance. each element is made up of its own type of atom, which is why each element is different and unique than the other.

Answer:

In chemistry, an element is a pure substance which cannot be broken down by chemical means, consisting of atoms which have identical numbers of protons in their atomic nuclei. The number of protons in the nucleus is the defining property of an element, and is referred to as the atomic number

hope this helps! :) :) :)

write chemical equation of zinc granule

Answers

The chemical formula for zinc is Zn

60 point! please help me please!

Answers

Answer:

[tex]\huge\boxed{\sf 21.6\ moles\ of\ MgO}[/tex]

Explanation:

Here,

for 1 mol of O₂, 2 moles of MgO are produced.

Also,

At STP:

1 mol of O₂ = 22.4 dm³/mol molar value

Moles in 242 L of O₂:

= volume / molar value

= 242 / 22.4

= 10.8 mol

Since:

1 mol of O₂ = 2 moles of MgO

10.8 mol of O₂ = 2 × 10.8 moles of Mgo

10.8 moles of O₂ = 21.6 moles of MgO

[tex]\rule[225]{225}{2}[/tex]

is this true or false?

Answers

Answer:

I think it's true

Explanation:

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Is helium and neon a noble gas?

Answers

Answer: Yes

Helium (He) and Neon (Ne) are both noble gases. They are very common in our lives. Helium has a atomic number of 2, and neon has one of 10.

Hope this helps you!

Which of the two waste products from combustion has been known to cause
harmful changes to our environment?
a. CO2
b. H2O

Answers

CO2, since it is carbon dioxyde, which creates pollution, and harms the planet

The answer is CO2 because it causes temperatures to rise

Thermochemical Equations Project: Modeling Energy Changes
DOES ANYONE HAVE THIS DONE AND IS WILLING TO SEND MY WAY. NEED ASAP. ON EDGE.

Answers

Answer:

In this assignment, you will write and balance a chemical equation. Then,you will use a table of enthalpy values to calculate the energy change in the reaction. Next, you will create a model of the energy change in the reaction.Finally, you will write an explanation that describes the energy change in the reaction.

Explanation:

Select all 3 of thy chemical properties below:
A Malleable
B Flammable
c Ductile
D Toxicity
E Density
F Oxidation
G Boiling/Melting Point

Answers

ductile toxicity and malleable i think those r it

Answer:

Explanation:

Lab Report
Ocean Currents
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U2_ Lab_OceanCturrents_Alice_Jones.doc).
Introduction
What was the purpose of the experiment?
Type your answer here:

Answers

Answer:

The purpose of the experiment is to see how water of different temperature and salinity affect the density.

Explanation:

Temperature and salinity directly affect the density of the water. Water of low temperature is more dense than water of high temperature, BUT, (fresh)water with no salt is less dense than (sea)water with more salt, so temperature and salinity change density of water.

Answer:

Please post the answers for the other questions on my page!! I will give you brainiest!! Please :(

Explanation:

do chemical equations with no reaction still have to be balanced

Answers

Answer:

The same number of atoms of each element must appear on both sides of a chemical equation. However, simply writing down the chemical formulas of reactants and products does not always result in equal numbers of atoms. You have to balance the equation to make the number of atoms equal on each side of an equation.

Explanation:

Explain any periodic trends you discovered in the 6 physical properties you investigated.

pls help.

Answers

Answer:

Periodic trends are specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its size and its electronic properties. Major periodic trends include: electronegativity, ionization energy, electron affinity, atomic radius, melting point, and metallic character. Periodic trends, arising from the arrangement of the periodic table, provide chemists with an invaluable tool to quickly predict an element's properties. These trends exist because of the similar atomic structure of the elements within their respective group families or periods, and because of the periodic nature of the elements.

Explanation:

Electron Affinity:

electron affinity is the ability of an atom to accept an electron. Unlike electronegativity, electron affinity is a quantitative measurement of the energy change that occurs when an electron is added to a neutral gas atom. The more negative the electron affinity value, the higher an atom's affinity for electrons.

Electron affinity generally decreases down a group of elements because each atom is larger than the atom above it (this is the atomic radius trend, discussed below). This means that an added electron is further away from the atom's nucleus compared with its position in the smaller atom. With a larger distance between the negatively-charged electron and the positively-charged nucleus, the force of attraction is relatively weaker. Therefore, electron affinity decreases. Moving from left to right across a period, atoms become smaller as the forces of attraction become stronger. This causes the electron to move closer to the nucleus, thus increasing the electron affinity from left to right across a period.

Electron affinity increases from left to right within a period. This is caused by the decrease in atomic radius.

Electron affinity decreases from top to bottom within a group. This is caused by the increase in atomic radius.

help me please i nedd hep

Answers

Answer:

7 to 5

Explanation:

power of 500 to 5

Which of the following would best be classified as a chemical change? *

Firecracker explosion
Freezing water into ice
Magnetizing a nail
Alcohol evaporating on your skin

Answers

I believe it would be B.) freezing water into Ice

How do we know that the
substance is not water?

Answers

heres the google answer. Since the H2O molecules in distilled water are composed of 2 hydrogen atoms and 1 oxygen atom all bonded together and functioning as a unit, the pure substance water is classified as a compound and could be broken down chemically into the individual elementshydrogen and oxygen.

Please help ASAP
4. Which of the following is not a characteristic of igneous rocks? (1 point)
Igneous rocks are formed when molten rock cools and hardens.
Igneous rocks have crystal grains.
Igneous rocks are larger in size because the rock cooled more slowly after the hot lava came out from the ground.
Igneous rocks have distinct layers that represent the time period when sediments were being deposited in them.

Answers

Answer:

igneous rocks have distinct layers that represents the time period

Explanation:

They are not formed overtime, nor have layers. They are just hardened lava.

Please help brainiest is award.

Answers

Answer:

Explanation:

nonmetals are brittle and dull.

1. What is the apparatus used to measure production in plants ?

Answers

Answer: Auxanometer

Explanation:

An auxanometer (Gr. auxain= "to grow" + metron= "measure") is an apparatus for measuring the increase of growth in plants. Sensitive auxanometers allow measurement of growth as small as a micrometer, which allows measurement of growth in response to short-term changes in atmospheric composition.

I hope this helps!

Answer:

An auxonometer is used to measure production in plants

1. Which type of base is the chlorine molecule?

Answers

Answer:

chlorine-35 (75.53 percent) and chlorine-37 (24.47 percent)

witch color has the longest wavelength

Answers

Answer:

Red light.

Explanation:

On one end of the spectrum is red light, with the longest wavelength. Blue or violet light has the shortest wavelength. White light is a combination of all colors in the color spectrum. It has all the colors of the rainbow.

Answer:

red

Explanation:

red has a wavelength of 630-700 nm

this element has a mass of 500.5 g. How much
volume does it have?

Answers

Answer:

element A has a mass of 2 units, while an atom of element B

has a mass of 5 units, what would be the mass of the

compound A3 B2

Explanation:

how many moles is 784.616 g of H2SO4?

Answers

Take the given weight (784.616g) and divide it by the atomic weight of H2SO4.

The atomic mass can be found under the element symbol on the periodic table. You must add the atomic mass for each element in H2SO4 to get the total. The total atomic mass for H2SO4 will be about 98g.

Then divide the weight by this number.

784.616g/98g = 8.006 moles

Therefore, there is approximately 8 moles.

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Help with this question plzzzzzz Why does the moon cycle from new moon to the full moon A and B are complementary. mA = 46. Find mB. Which counties are south central Asian Summary4Choose the best summary for the entire passage.In baseball history, one of the most famous gamestook place between the Brooklyn Dodgers and the NewYork Giants. It was a game to decide which team wouldwin the National League pennant in 1951. Throughout theseason, both teams had impressive winning recordsHowever, by the end of the season, the two teams hadtied and had to play each other in a deciding three-gameIn game 3 of the race for National League pennant, Bobby Thomson hit the winning homerun. Thathomerun was called "The Shot Heard 'Round the World" because it led to the New York Giantsvictory over the Brooklyn DodgersplayoffOn October 3, 1951, the Dodgers and the Giantsplayed game 3. On that day, America witnessed thehomerun that would become known as "The Shot Heard"Round the World." The homerun was hit by Giants'Bobby Thomson. It was a three-run drive that wouldeventually lead to a Giants' victory over the Dodgers. Thefinal score was 54The game was a defining moment for baseballbecause it was between rivals from across the town. Itwas also an amazingly well played game. Mostimportantly, the game determined who would play in theWorld Series. The Giants ended up losing the series tothe Yankees Even so, the Giants win over the Dodgersovershadowed the World Series that year. The 1951 baseball game between the Brooklyn Dodgers and the New York Giants is one of mostfamous games. It's legendary because it was an exciting game and decided which team would go tothe World Series. The Giants win the game with the Bobby Thomson's memorable homerun. The Brooklyn Dodgers and the New York Giants played in 1951 so that the winner of NationalLeague could be determined. There, Bobby Thomson hit a homerun that won the game for theGiants. 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