Define An Atom.
Ty!!!​

Answers

Answer 1
Atom :

=> the smallest particle of a chemical element that can exist.

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Related Questions

How much of a 10 M solution is needed to make 1 liter of all solution?
a. 1ml
b. 1000ml
c. 10ml
d. 100ml

Answers

Answer:

b is the answer 1000ml

please mark me brainlist

the 3 factors that affect the process of Natural Selection

Answers

Answer:

Overproduction of Offspring. The first of these factors that must be present in order for Natural Selection to occur is the ability of a population to overproduce offspring.

Variation.

Selection.

Reproduction of Adaptations.

Explanation:

How many moles are there in 8.25 x 10^26 molecules of methane (CH4)?

Answers

Answer:

i dont know

Explanation:

because i dont know 45

help me please this is chemistry

Answers

This is the answer,if you need more explaination for (iii) you can ask me :)

If the Earth is at a perpendicular angle or right angle to the sun we will be experiencing...??
plz hurry!!

Answers

Answer:

angle

Explanation:

let us see the sun moves an a angle

Which of the following do not contribute to weathering?
A. Rain
2.earthquakes
3. ice
4. wind

Answers

Answer:

Earthquakes

Explanation:

PLZ SOMEONE HELP I’LL MARK AS BRAINLIEST!!!
In an experiment 10 grams of a substance has a volume of 24 cm? What is the
substances' density ?

Answers

Answer:

[tex]d=0.417\ g/cm^3[/tex]

Explanation:

Given that,

Mass, m = 10 g

Volume, V = 24 cm³

We need to find the density of the substance. We know that, the density of a substance is given by :

Density = mass/volume

So,

[tex]d=\dfrac{10\ g}{24\ cm^2}\\\\d=0.417\ g/cm^3[/tex]

So, the density of the substance is [tex]0.417\ g/cm^3[/tex].

The air pressure above a large body of water off the coast of Florida is much higher compared to the air above the coast. What direction would the wind blow in this situation? (i know its kinda easy but im dum please help)

A
from the ocean to the coast

B
from the coast to the ocean

C
from the ocean, vertically into the sky

D
from the coast, vertically into the sky

Answers

A I just took the test

The direction in which the wind will blow in this situation is from the ocean to the coast and is denoted as option A.

What is Pressure?

This is defined as the force per unit area of a body and the unit is Pascal. We were told that air pressure above a large body of water is higher than the air above the coast.

This will make the wind blow from the ocean to the coast as the ocean has a higher pressure.

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How is a radioactive element different from a stable element?

Answers

A radioactive element has an unstable nucleus that emits particles in the form of alpha, beta, or gamma radiation. A stable element has a nucleus that does not emit such particles

Radioactive elements are the elements into which an atom is very unstable or highly reactive because it is having more energy in its nucleus. stable elements are those who have stable and there shell are properly filled with electrons.

What are radioactive elements and stable elements?

Most radioactive chemical elements have one or more radioactive isotopes on the other hand  some chemical elements only have one type of radioactive isotopes.

A radioactive element has an unstable nucleus that emits particles in the form of alpha, beta, or gamma radiation and stable element have stable nucleus with no effect of any radiation or energy due to fully filled orbitals.

Bombarding of these radiations has to be done in the nucleus of the element after this the desired element will become a radioactive element. And there is no effect of these rays on stable elements beacuse they are unreactive to this.

The ray of alpha beta and gamma consists of some charges within them and they are radioactive radiations harmful to human eyes.

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Neptune _____.

is a terrestrial planet
has a nearly horizontal axis
was discovered by mathematical calculations
is the largest planet in the solar system

Answers

Answer:

C. Was Discovered by Mathematical calculations

Explanation:

Terrestrial Planets are Inner Planets (Mercury,Venus,Earth,Mars) and Neptune is an ice giant or gas giant, Neptune is also not the largest planet in the solar system, I believe that's Jupiter. I don't know for sure if Neptune has a horizontal axis but my best guess is C. I hope this helps! :^)

How many grams are in 4.00 moles of glucose, C6H120

Answers

Answer:

[tex]molar \: mass = (6 \times 12) + (12 \times 1) + 16 \\ = 100 \: g \\ 1 \: mole \: weighs \: 100 \: g \\ 4.00 \: moles \: will \: weigh \: (4 \times 100) \: g \\ = 400 \: g[/tex]

Kinetic energy CANNOT be converted into potential energy
True
False

Answers

Answer:

false

Explanation:

Answer:

False

Explanation:

Because if you shoot a arrow and go back and get it and use it again it is potential

which organism ( grass, prairie, dog, ferret, or fox) do you think is a producer (does not depend on another organism for its food)?

Answers

Answer:

grass

Explanation:

Grass is at the very bottom of the food chain and relies solely on sunlight and water, which aren't organisms. I'm going to assume you meant prairie dog because a prairie isn't an organism, but prairie dogs rely on grass for food. Ferrets rely on meat for food (which they get from other animals) and foxes rely on other animals for food as well. Therefore, grass is the only organism that is a producer (gives other organisms food) and doesn't rely on other organisms for food.

Answer:

Grass

Explanation:

A producer or autotroph is an organism that produces its own food. These include plants, algae, and some bacteria. They convert carbon dioxide, water, and light energy from the sun into glucose, a type of sugar that provides energy, in the process of photosynthesis.

The organisms we are given are grass, prairie dog, ferret, and fox. The only plant is grass. Prairie dogs, ferrets, and foxes are all consumers, and depend on other organisms (plants, grass, leaves, or other animals for meat) for food.

Therefore, the producer in this list is grass.

What is considered the human body's largest organ?



Answers

Answer:

The skin

Explanation:

The skin is the largest organ of the body. The skin and its derivatives (hair, nails, sweat and oil glands) make up the integumentary system. One of the main functions of the skin is protection. It protects the body from external factors such as bacteria, chemicals, and temperature.

the skin, the skin run throughout the whole body

What is caffeine atomic number?
No links​

Answers

Answer:

Caffeine has no atomic number

Explanation:

Caffeine is a compound, not an element. Therefore it cannot have an atomic number.

The table shows the speed of sound in four substances.
Substance. Speed (meters/second)
air. 330
water. 1,498
steel. 5,000
copper. 6,420

Based on this information, which substance has the lowest density?
O A water
O B. steel
C. copper
O D. air​

Answers

I believe it’s Air because the molecules can pack tightly or spread out.

Based on this information,  air​ has the lowest density. Therefore, the correct option is option D.

What is density?

The substance's mass every unit of volume is known as its density. Although the Roman letter D may also be used, the sign most frequently used for density.  Density is calculated mathematically by dividing mass by volume.

Where m is the mass, V is the volume, and is the density. Density is sometimes roughly characterized as weight every unit volume, while this is incorrect technically; this quantity is much more precisely known as specific weight.  Air​ has the lowest density.

Therefore, the correct option is option D.

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Chemical properties of matter depend mostly on what?

Answers

Answer:

the types of atoms and bonds that a substance contains

Explanation:

Answer:

the types of atoms and bonds that a substance contains

Explanation:

Jaclyn's coffee was too hot to drink so she placed the cup in the freezer for 10 minutes. What did Jaclyn know about heat that caused her to take this action?​

Answers

Answer:

Jaclyn knew that Hot temperatures are cooled when out into a colder area.

A sample of helium has a volume of 3.49 L at 741 mmHg. What would be the volume if the pressure
were changed to 760 mmHg at the same temperature?

show work

Answers

P1: 741 mmHg

V1: 3.49 L P1 x V1 / P2= (741 mmHg) (3.49 L) / 760 mmHg = 3.40 L

P2: 760 mmHg

V2: ? L

Consider the following physical properties and fill in the missing information.

Answers

Answer:

I'm going to assume by "tool", you mean the tool best used to measure each factor:

Mass-Tool: scale, Unit: kilogram (kg)

Length-Tool: ruler, Unit: meter (m)

Volume of a regular solid-Tool: equations (there really isn't a physical tool to measure volume of a solid), Unit: cubic meters (m^3)

Volume of a liquid or irregular solid-Tool: beaker, Unit: Milliliters (mL)

Melting and boiling point-Tool: thermometer, Unit: Celsius (C)

Hope this managed to help!

If the chemist mistakenly makes 250 mL of solution instead of the 200 mL, what molar concentration of sodium nitrate will the chemist have actually prepared? Answer in units of M.

Answers

Answer:

0.120M is the concentration of the solution

Explanation:

Assuming the mass of sodium nitrate dissolved was 2.552g

Molar concentration is an unit of concentration widely used in chemsitry defined as the moles of solute (In this case NaNO3) in 1L of solution.

To find this question we must find the moles of NaNO3 in 2.552g. With this mass and the volume (250mL = 0.250L) we can find molar concentration as follows:

Moles NaNO3 -Molar mass: 84.99g/mol-

2.552g * (1mol / 84.99g) = 0.0300 moles NaNO3

Molar concentration:

0.0300 moles NaNO3 / 0.250L =

0.120M is the concentration of the solution

Explain why gases such as the oxygen found in tanks used at hospitals are compressed. Why must care be taken to prevent compressed gases from reaching a high temperature?

Answers

Answer:

Large amount of gas can be stored in small container.

Explanation:

They are compressed so that a larger amount of gas can be stored in a smaller container. A greater mass confined to a smaller volume makes transporting and storing of gases easier. Increasing temperature increases pressure, and the cylinders might explode.

Suppose you see a crescent Moon. How do you know if it is waxing or waning?

Answers

Answer:

waxing is in the evening and waning is in the morning if you cant see the moon in the evening it is waning if you can see it in the evening it is waxing

how many moles in 200 grams of Br

Answers

2.5030036043252 moles.

Consider the statement, “In a chemical reaction, atoms are neither created nor destroyed, only rearranged.” Why is this a statement of the law of conservation of mass?

Answers

Answer: The law of conservation of mass is reffering to the fact that energy cannot be created or destroyed. So when you speak about atoms not being created or destroyed it is the same thing. Unless you're talking about an atomic bomb where the atoms are split.

In a chemical reaction, the total mass present is equal to the mass of all the atoms undergoing the reaction.

According to the law of conservation of mass, mass is neither created nor destroyed but can be converted from one form to another. In a chemical reaction, atoms are rearranged. However, the total number of atoms in the system remains constant.

So, the total mass present in the system is equal to the mass of all the atoms undergoing the reaction. Since atoms are only rearranged, no new atom is formed and no atom disappears in the reaction, the total mass of the system remains constant.

For this reason, the statement;  “In a chemical reaction, atoms are neither created nor destroyed, only rearranged" is a statement of the law of conservation of mass.

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why is Cu+O=2CuO unbalanced ​

Answers

Answer:

because the product of CuO contains 2 molecules so it is unbalanced

Explanation:

to balance it 2Cu+2O=4CuO now it is balanced

Because the two before the cuo means there is 2 moles of each atom and in the reactants there is only one mole of each so to balance the equation u need to put 2 before the cu and before the o

Which of these would most likely happen to a species that is not able to adapt to a changing environment?

Answers

Answer:

If a species cannot adapt to the changes in their ecosystem, they may move to another location. If they will not move, the species may become threatened, endangered or extinct.

Explanation:

The way the question is worded, it sounds like there are options for you to chose from that you are not showing. I could help you out more if I actually knew the options.

Extinction is likely if conditions change faster than a species can evolve, and if members of that species lack the traits required to survive in the new environment.

What is an extinction ?

The death of all members of a species of plants, animals, or other organisms is referred to as extinction.

The primary cause of higher extinction rates is habitat loss. Other causes include habitat changes, commercial overexploitation of wildlife, the introduction of harmful nonnative species, pollution, and disease spread.

If a species is unable to adapt to changes in its ecosystem, it may relocate. The species may become threatened, endangered, or extinct if they do not move.

Thus, Extinction is likely if environmental conditions change faster than a species can evolve and members of that species lack the traits needed to survive in the new environment.

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The equation below represents the equilibrium state of aqueous phosphoric acid.

H3PO4(aq) ↔ H+(aq) + H2PO4-(aq)

Which of the following is equal to the ionization constant Ka?
A
[H2PO−4][H+][H3PO4]

B
[H+][H3PO4][H2PO4]

C
[H+][H2PO−4][H3PO4]

D
[H3PO4][H+][H2PO−4]

Answers

Answer:

.

Explanation:

[tex]K_a=\frac{[H_2PO_4^-][H^+]}{[H_3PO_4]}[/tex]

K, the equilibrium constant, is equal to products over reactants raised to their coefficients (excluding solids and liquids and only including aqueous and gasses)

[tex]Ka=\frac{[H_2PO_4^- ][H^+]}{H_3PO_4}[/tex]  is the equilibrium constant and is equal to products over reactants raised to their coefficients (excluding solids and liquids and only including aqueous and gasses). Hence, option A is correct.

What is equilibrium?

A state of balance between opposing forces or actions.

A number that expresses the relationship between the amounts of products and reactants present at equilibrium in a reversible chemical reaction at a given temperature.

[tex]Ka=\frac{[H_2PO_4^- ][H^+]}{H_3PO_4}[/tex]

K, the equilibrium constant, is equal to products over reactants raised to their coefficients (excluding solids and liquids and only including aqueous and gasses)

Hence, option A is correct.

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The number of molecules in 1.00 liter of O2 gas at 56◦C and 821 torr is
1. 1.83 × 1025 molec.
2. 32 molec.
3. 2.24 × 1023 molec.
4. 2.41 × 1022 molec.
5. 4 × 10−2 molec.

Answers

Answer:

2. 2.41 x 10^22 molec

Explanation:

Answer:

2. 2.41 x 10^22 molec

Explanation:

the other person said that and i got right on my quiz

Consider the following reaction:

4FeS2 + 11O2 → 2Fe2O3 + 8SO2

When 28.42 grams of FeS2 reacts with 5.44 grams of O2, how many grams of SO2 are formed?










What is the limiting reactant?


What is the excess reactant?
I'm begging

Answers

Your limiting reactant is O2 and the excess would be FES2.Do you want me to solve the qn or just ans the qn ;-;
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