How are different elements determined?

Answers

Answer 1
Explanation: Elements are defined by the number of protons in a given atom, and the atom is the smallest unit of an element. In contrast, a compound is defined by the identity and organization of multiple atoms, with the smallest unit of a compound being a molecule.
Answer 2
Short answer = Elements are defined by protons in a given atom .

Related Questions

hhhhhhhhhhhheeeeeeeeeeelllllllllllllppppppp

Answers

Answer:i dont even know myself :p

Explanation:

show the answer choices in drag and drop in the comments and i can answer it easily :)

How would an apple, potato, and onion all taste the same?
A) plugging your nose
B) Chewing on mint gum in intervals
C) eating them at the same time

Answers

Answer:

a

Explanation:

Answer:

a

Explanation:

A wavelength with a frequency of 14 HZ has a wavelength of 3 meters at what speed will this wave travel

Answers

Answer:

The speed will be 42 m/s

Explanation:

Wavelength is the minimum distance between two points on the wave that are in the same state of vibration. In other words, in a periodic wave the wavelength is the physical distance between two points from which the wave repeats.

Frequency (f) is the measure of the number of cycles or repetitions of the wave per unit of time. That is, it is the number of vibrations that occur in a unit of time. That is, how many peaks or valleys are repeated in a unit of time. If the unit of time is one second then the frequency is measured in Hertz (Hz).

The wavelength (λ) and the frequency (f) are two inversely proportional parameters and related by the propagation speed. The speed of propagation is the speed with which the wave travels, it is represented by the letter "v". The equation that links these three parameters is v = f * λ.

In this case:

f= 14 Hzλ= 3 m

Replacing:

v= 14 Hz* 3 m

Solving:

v= 42 m/s

The speed will be 42 m/s

what is the formula mass of MgO (how much does one mole of it weigh)

Answers

Answer:

40.3044 g/mol

Explanation:

hope this helps


What are the correct coefficients for the unbalanced equation below?
P4 +02 → P2O5

A)1,1,1
B) 1,3,1
C)1,5, 2
D)2,1,2
E)none of the above

PLEASE EXPLAIN WHY! I will mark the brainliest!

Answers

Answer:

C; 1, 5, 2

Explanation:

First, we do atom inventory:

Think of the arrow as a divider

On the left side, we have 4 phosphorus and 2 oxygens

On the right side, we have 2 phosphorus and 5 oxygens

Now we try to balance:

To make it easier, we want to try and make the 5 oxygens get to an even number so, we put a 2 in front of the P2O5 which makes it 2P2O5

Since we put a 2 in front of the P2O5, we have to multiply our phosphorus and oxygen on the right side by 2, which brings us to now have 4 phosphorus and 10 oxygens.

So now the oxygens are unbalanced.

To balance the oxygens, we put a 2 in front of the O2 located on the left side which makes us multiply our oxygen by 5, making it now 10.

Final result:

We end up having P4 + 5O2 = 2P2O5

(1, 5, 2)

As one object gets closer to another object , the force of gravity will increase ......


True or false

Answers

Answer:

true

Explanation:

hope that helped!!

The answer is true to the question asked

_C3H602 + _ 02 → _ CO2 +_ H20
balance the equation

Answers

Answer:

balanced plz give correct question

1) how can you make a solution more concentrated

Answers

Explanation:

solvent bc when you remove it it becomes more concentrate

Plz help thank you!!!

Answers

Answer:

1. Covalent Bond

2. Ionic Bond

Explanation:

Covalent bonds are defined as the bond in which sharing of electrons takes place between atoms. The sharing of electrons is in equal number so that it form a stable balance of attraction and repulsion between atoms. In the given example of CO2 (first image) oxygen is sharing equal number of electrons with carbon to form a stable bond called covalent bond.

Ionic bonds are formed when valence electrons are transferred to other atoms and form oppositely charged ions. In ionic bond formation, the atoms that gain electrons become negatively charged and the atoms that loses electrons become positively charged. In the given example of Ca Cl2, Ca is also giving its 2 valence electrons to each Cl and there is no stable balance of attraction and repulsion between atoms.

Hence, the correct answer is:

1. Covalent Bond

2. Ionic Bond

3CuCl2 + 2Al = 2AlCl3 + 3Cu

Using the molar ratio between the limiting reactant (aluminum) and the product copper, determine the theoretical yield of copper.​

Answers

Answer:

0.014 theoretical yield and 79% percentage yield

Answer:

0.014 theoretical yield and 79% percentage yield

:)

Explanation:

2) Check all that apply.
What are the three major groups of elements?

Answers

Answer:

metals, nonmetals and metalloids

Explanation:

1. Metals

2. Nonmetals

3. Metalloids

4.91 M NaOH solution (density=1.04g/ mL)

Answers

Uhhhhhhhhhh................

Which of these human development stages occurs after childhood?
1. infancy
2. adulthood
3. maturation
4. adolescence

Answers

Answer:

4 Adolescence

Explanation:

Adolescence is the human development stages occurs after childhood. Hence option 4 is correct.

What is human development?

Human development is defined as expanding people's freedoms and opportunities while also enhancing their well-being. The true freedom that everyday individuals have to choose who they are, what they do, and how to live is what human growth is all about. This discipline tries to comprehend the numerous transformations that people and their relationships go through as they learn and develop.

The youngster reaches puberty during the adolescent stage. A abrupt rise in hormones causes a variety of emotional and mental changes throughout this time. The body's major and secondary sex traits develop during a significant growth spurt phase.

Thus, adolescence is the human development stages occurs after childhood. Hence option 4 is correct.

To learn more about human development, refer to the link below:

https://brainly.com/question/14911955

#SPJ2

Which type of fertilization is common with animals that live in the water?
1. external fertilization
2. sexual
3. internal fertilization
4. asexual

Answers

External fertilization in animals usually occurs in water or in damp areas in a process called spawning.

The answer for this would be the first one external fertilization

What do molecules put together form?
In other terms what do you call a molecule that is put together with another molecule to form a what?​

Answers


Molecule add molecule is a compound

One day on her walk home from school, Leann noticed some rust on an old car.

She remembered that chemical equations can summarize what happens in a chemical reaction. What is the name of the two parts found on the left side of the equation below?

4 Fe + 3O2 → 2Fe2O3

Answers

Answer:

Iron and Oxygen

Explanation:

Fe is Iron and O2 is Oxygen

What is the density of a 32g toy car that
has a volume of 8cm3?
A. 256alcm3
An3

Answers

Answer:

density=mass/volume

density=32/8

density=4

For the formation of hydrogen iodide, H2(g) + 12(g) - 2HI(g) the value of the
equilibrium constant at 700K is 54.7. If one mole of H2 and one mole of 12 are the
only materials initially present, what will be the equilibrium concentrations of H2,
12, and HI.

Answers

Answer:

t 700 K, the equilibrium constant for the reaction;

H  

2(g)

​  

+I  

2(g)

​  

⇌2HI  

(g)

​  

 is 54.8.

If 0.5 mol litre  

−1

 of HI  

(g)

​  

 is present at equilibrium at 700 K, what are the concentrations of H  

2(g)

​  

 and I  

2(g)

​  

 assuming that we initially started with HI  

(g)

​  

 and allowed it to reach equilibrium at 700 K.


llodine solution is added to a sample taken from the boiling tube after 10 minutes and
60 minutes.
Suggest what you would see in these samples.
03

Answers

Answer:

I have no idea sorry but if you payed attention to what they are telling you you won't half to cheat

the structure and bonding of gold?

Answers

Answer:

metallic bonding

Explanation:

since it is a metal gold forms metalllic bonding.

Answer:

metalic bonding

Explanation:

2. Stronger intermolecular forces =______ boiling point​

Answers

Stronger intermolecular forces = higher boiling point​

The stronger the intermolecular forces, the harder the molecules are to pull/break apart, which means a higher boiling point.

What is the chemical formula for nickel (III) oxide, I know the answer but can someone explain how you would get it?

Answers

Answer:

the answer is d.

1. Write the symbols for each element.

2. Find the charge for each element using the Periodic Table. Write it above each element. (because there is a (III) after nickel, the charge of nickel is +3. oxygen is in group 16, which means it has a -2 charge.)

3. See if the charges are balanced (if they are you're done!)

- when you criss cross (getting Ni2O3, the charges are canceled out, so the equation is balanced.

if you still need help or if this is confusing, look up How to Write the Formula for Nickel (III) oxide  by Wayne Breslyn on YT.

Answer:

D.) Ni2O3

Explanation:

edge 2021 (just needed the daily answer)

(c) Magnesium has atomic number 12.
Magnesium exists as magnesium-24, magnesium-25 and magnesium-26 atoms.
Explain, in terms of protons and neutrons, why these atoms are isotopes
of magnesium
(2)


PLEASE HELP URGENT

Answers

Answer: The magnesium 24, 25, and 26 atoms are isotopes because they all have the same number of protons but they have different mass numbers

Explanation: isotopes of an element have the same number of protons but different mass number. So for magnesium 24, the number of protons is 12 and the number of neutrons is 12.

For magnesium 25, the number of protons would still be 12 but the neutrons would be 13.

Magnesium 26, the number of protons would be 12 and neutrons number is 14

How many layers of paint are there on the typical manufactured vehicle?

Answers

Answer:

3 sometimes 4

Explanation: there are usualy

3 layers of paint but sometime manufacterers add paint protection film to bring the total up to 4

There are some climates in which there are no living things. true or false​

Answers

Answer:

True

Explanation:

There are some climates in which there are no living things. The average of the weather is the climate.

What is climate ?

Climate is a region's averaged long-term weather pattern over a period of time, usually 30 years. More precisely, it is the average and variation of climatic variables over a period of time that can range from a few months to many millions of years.

Every element of our life is impacted by the climate, including our food supplies, transportation systems, clothing choices, and vacation destinations. It significantly affects our future, our health, and our means of subsistence. Climate is the long-term trend of the weather in any given location.

As an illustration, you can anticipate snow in the Northeast in January or hot and muggy weather in the Southeast in July. Climate is this. Extreme values, such as record-breaking high temperatures or heavy rainfall, are also part of the climatic record.

Thus, there are some climates in which there are no living things.

To learn more about climate follow the link;

https://brainly.com/question/10440860

#SPJ2

how does a drupe fruit differ from a hesperidum fruit. ​

Answers

Answer:

hi

Explanation:

Answer:

Fleshy Fruits: All of most of the ovary wall (pericarp) is soft or fleshy at maturity. ... partitions, juicy seed vesicles, and a leathery exocarp similar to a hesperidium. ... This is a very common dry fruit found in many different plant families.

Explanation:

what color should i paint my nails. btw ima do a cheetah design on top so what should be the base color??

Answers

Answer:

Tan :3 or maybe a yellow O,O

Explanation:

Answer:

pink and purple, like in fade

Explanation:

I think it'd look cute

HELP !!!!!!!!!!!!! PLEEEAAAAASSSSSSEEEE

Answers

I need help with the same thing
match the solstice with the season of that month

spring equinox: march 21-22

summer solstice: june 20-21

winter solstice: december 21-22

fall equinox: september 22-23

The wavelengths humans can see are known as ______.
UV light
Infrared
Visible light
All of the above

Answers

Answer:

visible light spectrum

Explanation:

It’s is visible light you can remember by visible (that’s what I did)

AgNO3 ionic or covalent

Answers

Answer:

what i need more details

Explanation:

Answer:

Ionic

Explanation:

AgNO3 is also highly soluble in water. Ionic means that the compound is composed of ions.

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