Chemistry High School

I NEED HELP PLEASE IVE BEEN LOOKING FOR THE ANSWER FOR A REALLY LONG TIME

I NEED HELP PLEASE IVE BEEN LOOKING FOR THE ANSWER FOR A REALLY LONG TIME

Answers

Answer 1

Answer:

a

Explanation:

the atoms are different so the samples will be different

Related Questions

What is the pH of a solution if [H+] = 1.0 x 10-5M? *
1 point
5.00
7.00
11.00
50.0

Answers

Answer:

5.00

Explanation:

because ignoring the pH solution part and doing the math it comes around to 1.0x5.0 which 1 times anything is itself so its 5

(Boost your knowledge questions)
1. Can you light Diamond on fire?

2. What is the difference between a Chemical Process and a Physical Process?

3. How many electrons fit in each shell around an atom?​

Answers

Answer:

a) Diamond can indeed be set on fire since it is made of carbon. ... Although diamond requires a higher temperature to burn, it does indeed burn via normal carbon combustion. You can even burn diamond in a regular flame if you are patient and conditions are right.

b) In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. The distinction between physical and chemical change is not clear cut.

c) Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.

MARK ME AS A BRAINLIST PLZ

How many electrons does an alpha particle contain

Answers

An alpha particle is identical to a helium atom that has been stripped of its two electrons

I need helppppppppppp

Answers

A B C

a. Mg(12) 2.8.2 -2e- = Mg2+

b. S(16) 2.8.6 +2e- = S2-

c. MgS

d. No, because it is neutral

students are comparing the parts of a cell to the parts of a city. Which of the following would provide the best comparison to the nucleus of a cell?

Answers

Answer:

City Hall - directs necessary activities throughout the city

Explanation:

Answer:

Town Hall,

Explanation:

I can’t find the answer, can you help me please?

Answers

Answer: Warm ocean air then rises into the storm, then forming an area of low pressure underneath. :)

Explanation:

A 12.0 L helium balloon is inflated in an air-conditioned store at 21.0C. Assuming that the pressure remains constant, how large is the balloon when it is taken outside on a hot day at 40.0C?

Answers

The ballon will be 22.86L large when it is taken outside on a hot day at 40⁰C

According to pressure law, the volume of a given mass of gas is directly proportional to the temperature. This is expressed as:

V = kT

k = V1/T1 = V2/T2

Given the following parameters

V1 = 12.0L

T1 = 21⁰C

T2 = 40.0⁰C

Required

Final volume

Substitute the given parameters into the formula

12/21 = V₂/40

21V₂ = 12 * 40

21V₂ = 480

V₂ = 480/21

V₂ = 22.86L

Hence the ballon will be 22.86L large when it is taken outside on a hot day at 40⁰C.

Learn more here: https://brainly.com/question/14788769

Based on their definitions, electron affinity could be considered the opposite of

Answers

Based on their definitions, electron affinity could be considered the opposite of electron affinity. This is the force required to remove an electron from an atom while it is gaseous, or the propensity of an atom to lose electrons.

What is meant by electron?

The electron is a subatomic particle with a negative one elementary charge electric charge. Due to their lack of components or substructure, electrons, which are part of the lepton particle family's first generation, are typically regarded to be elementary particles.

An electron is a negatively charged subatomic particle that can exist either free or bound to an atom (not bound). Along with protons and neutrons, electrons are one of the three primary types of particles that make up an atom. Together, protons, neutrons, and electrons make up the atom's nucleus.

This is the force required to remove an electron from an atom while it is gaseous, or the propensity of an atom to lose electrons. Conceptually, this is the polar opposite of electron affinity.

To learn more about electron refer to:

https://brainly.com/question/860094

#SPJ2

The answer would be ionization energy


Which two options are examples of chemical changes?

Answers

Answer:

gas and liquid ;-;

Explanation:

correct me if im wrong

The boiling point of ethanol is 78c, State what this means

Answers

78.37 °C
It mean , ethanol, with a molecular weight (MW) of 46, has a boiling point of 78 °C (173 °F), whereas propane (MW 44) has a boiling point of −42 °C (−44 °F).

please help!!!

Select the correct answer.

According to the valence bond theory, what kind of bond forms when valence atomic orbitals overlap with an unpaired electron?

A. covalent bond

B. sigma bond

C. pl bond

D. no bond​

Answers

Answer:

A. covalent bond

Explanation:

Hope this helps out!

Which of the following is equal to avogadros number?

A. The number of atoms of bromine in 1 mol Br2

B. The number of molecules of chlorine in 0.50 mol Cl2

C. The number of molecules of nitrogen in 1 mol N2

D. The number of atoms in 1 mol CO

Answers

Answer:

A. The number of atoms of bromine in 1 mol Br2

Explanation:

Hello?

In Avogadro's constant/ number, we talk about atoms in 1 mol and not molecules.

In Avogadro's constant/ number, we talk about atoms in 1 mol and not molecules. The solution will have also been C. But it is talking about molecules. Please bear in mind that molecules is based on grams that it an element contains overall.

I hope this helps. Have a nice studies.

How are valence electrons and ionization energy related?

Answers

Ionization energy is correlated with the strength of attraction between the positively-charged nucleus and the negatively-charged valence electrons. The higher the ionization energy, the stronger the attractive force between nucleus and valence electrons, and the more energy is required to remove a valence electron.

The primary way in which the amount of carbon dioxide in the atmosphere can be increased is by ____.

Answers

the burning of fossil fuels

Please use the image to answer the question thanks : >

Bye, Have a good day.

Answers

what image? you didn't attach one.

Match the correct function to the correct organelle.
Functions
Organelle
Allow substances to enter and leave the cell ___________
Vacuole
Store water or fluids __________
Ribosome
Powerhouse of the cell _________
Golgi Bodies
Produce protein _________
Nucleus
The cell ‘post office’ modify, sort and package protein __________
Cell Membrane
Control the life process of the cell __________
Mitochondria

Answers

Answer:

Allow substances to enter and leave the cell=Cell Membrane

Store water or fluids=Vacuole (vacuoles are much bigger in plant cells)

Powerhouse of the cell=Mitochondria

Produce protein=Ribosome

The cell ‘post office’ modify, sort and package protein=Golgi Bodies

Control the life process of the cell=Nucleus

Which of the tests would involve a chemical change in the mineral?

Answers

hmmm water

Explanation:

Water can change if you put food coloring

in it

A person has a mass of 80.0 kg on
Earth, what would their mass be on
Mercury, which has 1/3 the gravity of
Earth?
A. more than on the Earth
B. less than on the Earth
C. the same as on earth

Answers

Answer:

The same as on earth

Explanation:

mass is the amount of matter in an object and the mass of an object is always the same at any point in time

gravity will only have effect on the weight and not the mass.

so assuming the question was talking about the weight, then we can say the weight will be lesser on Mercury

i need help TnT

do you think someday human beings will become extinct also because of diseases and pandemics?

What program or projects you would like to propose to avoid the extinction of human beings to happen?

Write your advocacy program or projects on the space provided below. (You may state your answers with a minimum of 5 sentences in a paragraph or bulleted paragraph form). *​​​

Answers

Explanation:

I don't think human beings will ever extinct

cause they are smart and adaptive

in MY OPINION

Q1. I don't know the future but I would say that Humans will not become extinct because of diseases and pandemics.

Plants combine water (liquid) and carbon dioxide (gas) to make sugar (solid) during photosynthesis. This is an example of__.

Answers

Answer:

Explanation:

It' an example of photosynthesis and plants make oxygen and suger (glucose). Hope this helped

is it possible for a molecule to have polar bonds and not have a net dipole?

Answers

Yes, an example of a molecule would be CO2, which has no dipole moment but does have two polar bonds. Although CO2 has no dipole moment, its charge distribution gives rise to a quadrupole moment

rust results from iron’s reaction to oxygen. an iron nail gains mass when it rusts. how does this reaction support the law of conservation of mass?

Answers

I’m going to assume because the iron and the oxygen atoms form a compound which has a higher weight then just iron so the nails weight increases.

So no new mass is created or destroyed it’s simply added to the nail from the airs oxygen.

Determine the enthalpy for this reaction: Ca(OH)2(s) CO2(g)→CaCO3(s) H2O(l).

Answers

Answer:   This is an acid-base reaction (neutralization): Ca(OH) 2 is a base, CO 2 is an acid. ; White, odorless powder. [Note: Readily absorbs CO2 from the air to form calcium carbonate.]

Explanation:

Answer:

-113.2 kJ/mol

Explanation:

(-1207-285.8)-(-981.1-393.5)= -133.2

(Products)-(Reactants)= Answer

i2 is an example of which covalent molecule

Answers

1.Iodine

I hope it help you

Answer:

Yes, it has only a single covalent bond.

Explanation:

It has only a pair of electrons between the iodine atoms in order to gain a stable arrangement of 8 electrons in its outer shell. It is sharing them, so it's a covalent bond as a single iodine atom cannot be stable on its own. It's a halogen and is a single covalently-bonded diatomic molecule.

How many metals, nonmetals and metalloids are there in the periodic table?

Answers

Answer:

There are 118 elements in the nature.

Metals s = 92

Non metals = 20

Metalloids Ms = 6

Explanation:

A Rectangular Prism has a height of 4cm, a width of 5cm, a length of 1.2 cm, and a mass of 85,000 g. What is it's density?
A. .00000035416 g/cm3
B. 00035416 g/cm^3
C. 354.16 g/cm^3
D. 3541.6 g/cm

Answers

Answer:

The answer is D.

Explanation:

Volume (V) = l x w x h

V = 4 x 5 x 1.2

V = 20 x 1.2

V = 24

Density = Mass/Volume  or D = M/V  

D = 85,000/24

D = 3541.66666666

NaF NF3 SiF4 CaF2 NH4F
Identify and explain which of the listed compounds from the list are ionic and which are covalent.
no outside links please

Answers

Ionic bonds happen when Metals give electron to non-metals and covalent bonds happen when Non-metals give electrons away. Knowing this:

-NaF = ionic (Na is a metal, F is a non-metal)

-NF3 = Covalent (N is a non-metal, F is a non-metal)

-SiF4 = Ionic (Si is a metalloid, F is non-metal)

-CaF2 = ionic (Ca is a metal, F is a non-metal)

-NH4F = covalent (N is a non-metal, H is a non-metal, F is a non-metal)

Hope this helps

3. Which part of a cell is not found in the cytoplasm?
a. chromosomes
b. Golgi body
c. ribosome
d. vacuole

Answers

Answer:

vacuole

Explanation:

Brainliest please

THIS IS DUE LIKE REALLY SOON I RLLY NEED HELP :,)

Answers

double displacement

Which is a common unbalanced force acting on objects in motion?
a. friction
b. speed
c. inertia
d. acceleration

Answers

Answer:

a. friction

Explanation:

What is a common unbalanced force acting in motion? Common forces that are often unbalanced include the force of gravity and applied forces. When these forces are unbalanced, objects accelerate, change their position and find new configurations for which all forces are again balanced.

Friction is a kind of force.

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