If a sample of copper is 215g, how many moles of copper atoms are in the sample?

If A Sample Of Copper Is 215g, How Many Moles Of Copper Atoms Are In The Sample?

Answers

Answer 1

Answer:

3.38 moles.

Explanation:

The following data were obtained from the question:

Mass of copper (Cu) = 215 g

Number of mole of copper (Cu) =...?

The number of mole of copper (Cu) in 215 g can be obtained as follow:

Mass of copper (Cu) = 215 g

Molar mass of copper (Cu) = 63.55 g/mol

Number of mole of copper (Cu) =...?

Mole = mass /Molar mass

Mole of Cu = 215/63.55

Mole of Cu = 3.38 moles

Therefore, 3.38 moles of copper (Cu) is present in the sample.


Related Questions

If you go to the moon your mass would ___.

stay the same

increase

Answers

Answer:

stay the same

Explanation:

you would weigh less if u stood on a scale but you're still the same mass unless you chopped of a body part or something

It Stays the same....

What are some ways you can avoid the health risks of too much radiation
exposure?

Answers

Answer: when you go outside protect your skin with sunscreen, protective clothing, a hat, and sunglasses

Explanation:

Scientists in a lab are working with two different samples of the element mercury. They know that the different samples are different isotopes.

Which property of the isotopes must be different?
a. the atomic number
b. the electric charge
c. the element name
d. the mass number

Answers

b.) the electric charge

Answer:

A Mass number

Explanation:

did it on edge2020

C₂H₂
a. resonance
b. no resonance

Answers

Answer:

no resonance

Explanation:

Since there is only one possible lewis structure C2H2 does not have resonance. A molecule has resonance if more than one lewis structure can be drawn for that molecule. For molecules with resonance, each lewis structure individually does not accurately depict the structure of the molecule

You are an employee at "cash for gold" and a customer comes in looking to exchange gold for money. They claim to have 3.47 gram nugget of fold. How many particles (atoms) of gold are in one nugget? With work shown

Answers

Answer:

The number of atoms in 3.47 gram nugget of gold is approximately 1.0606 × 10²² atoms

Explanation:

The given mass of gold = 3.47 grams

The molar mass of gold = 196.96657 g/mol

The number of moles of gold in 3.47 grams of gold = 3.47 grams/(196.96657 g/mol)

The number of moles of gold in 3.47 gram nugget of gold = 0.01762 moles

The number of atoms in one mole of gold = 6.02 × 10²³ atoms

The number of atoms in 0.01762 moles of gold = 6.02 × 10²³ atoms/mole × 0.01762 moles

The number of atoms in 0.01762 moles of gold ≈ 1.0606 × 10²² atoms

∴ The number of atoms in 3.47 gram nugget of gold ≈ 1.0606 × 10²² atoms.

Create a sort of infomercial featuring a solution you created or designed.
Say a few statements about it.


please help​

Answers

Answer:

Informercials, like the class Shamwow Informercial are an example of how structure and technique can have a huge effect on how a user or prospect is driven towards taking a specific action like clicking a buy button.

Informercials follow a specific structure that any small business can use to drive action but few businesses ever consider using it when they pitch their product or service. In this post, we'll describe the structure and give you examples of how you can use it in your business.

The question above wants to test your ability to create an infomercial using your creativity. For that reason, I can't create an infomercial for you, but I'll show you how to create one.

First, you need to know that an infomercial is an advertisement made to be played on television, usually associated with sales, but can be used to present information.

Based on this, you should create your newsletter as follows:

Establish the element that your infomercial wants to present.Show what are the issues related to this element.Show the solutions you want to present to these problems.Show how these solutions are truthful and reliable.

In the image below, you can see a tutorial on how to make an infomercial.

More information:

https://brainly.com/question/12603070?referrer=searchResults

Spongebob completed his experiment. He wrote a brief summary about the investigation. He also determined that his hypothesis statement was not right and explained why it wasn't right by providing evidence from the investigation. Spongebob utilized which step of the scientific method?

Answers

Answer:

In a 7-step scientific method, Spongebob utilized the 6th step when He wrote a brief summary of the investigation, and Spongebob utilized the 7th step when He also determined that his hypothesis statement was not right and explained why it wasn't right by providing evidence from the investigation.

Explanation:

Scientific Methods are organized ways employed by scientists to tackle problems by providing solutions to the problem or make hypotheses to which other scientists build on to provide solutions to the problem.

The steps of the scientific method are:

Step 1- Understand the Problem

Step 2-  Make research

Step 3- Hypothesis.

Step 4- Conduct an experiment to test the hypothesis

Step 5- Observations.

Step 6-Results/Conclusion.

Step 7- Communicate your research

When Spongebob wrote a brief summary of the investigation, which means he had already conducted an experiment and had already made necessary observations and data collection, so he was at step 6. At step 6, he had analyzed the data collected.

When Spongebob determined that his hypothesis statement was not right and explained why it wasn't right by providing evidence from the investigation, then he was at the final step of the scientific method. Step 7 tells whether the hypothesis is true or false.

Answer:

hey im spongebob

Explanation:

:D

The number of electrons in the first three energy levels for four neutral elements is shown in the table. The element with the highest ionization energy is-

Answers

Answer:

The correct option is;

Element 2

Explanation:

The ionization energy is the energy required to eject an electron from a gaseous ion or atom

The ionization energy increases across the period and increases up the group

The elements with the highest ionization energy are those that have the complete octet structure in their outermost shell, which are the noble gases

Therefore, given that element 2, which has the complete octet structure in the outermost shell, then it is an element of the noble gases which have the highest ionization energy in a period, and therefore has the highest ionization energy.

On the periodic table, the element with 10 electrons is Neon, with ionization energy of 2080.68 kJ/mol which is the second highest after helium, that has only 2 electrons.

WILL GIVE YOU BRAINLIEST!!!

which option is an example of a chemical property?
A ability to decompose

B color

C melting point

D density

which option is an example of a chemical property

A boiling point

B reactivity

C color

D density

Answers

Answer:

A ability to decompose

B reactivity

Explanation:

Chemical properties are those properties that tell us about what a substance can do as regards to whether or not the substance reacts with other substances.

Examples are flammability, rusting of iron, precipitation, decomposition of water by an electric current.

The ability to decompose and reactivity are chemical properties of a substance.

Physical properties tells us everything about what a substance is when no change is occurring to its constituents. Examples are state of matter, color, odor, taste, texture, hardness e.t.c

Answer:

1. A

2. B

Explanation:

Chemical property does change the composition of a substance.

I took the test before. I got all the answer correct and got 100% score.

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Learning Properties of Matter Quiz Unit 2 Lesson 11 Grade 8

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What part of the atom is responsible for the behavior of the alpha particles?

Answers

Answer:

nucleus

Alpha particles are subatomic fragments consisting of two neutrons and two protons. Alpha radiation occurs when the nucleus of an atom becomes unstable (the ratio of neutrons to protons is too low) and alpha particles are emitted to restore balance.

Explanation:

state four difference between the series and parallel connection?​

Answers

Answer:

1- The components in a series circuit are arranged in a single path from one end of supply to another end. However, the multiple components in a parallel circuit are arranged in multiple paths where the two end terminals of the battery.

2- In the series circuit, different voltage exists across each component in the circuit. Whereas in the parallel circuit, the same voltage exists across the multiple components in the circuit.

3- The equivalent resistance in case of a series circuit is always more than the highest value of resistance in the series connection. While the equivalent resistance in the parallel circuit is always less than any of the individual resistances in parallel combination.

4- A fault in one of the components of the series circuit causes hindrance in the operation of a complete circuit. As against fault in a single component in a parallel network do not hinder the functioning of another part of the circuit.

The detection of a fault in case of a series circuit is difficult, but it is quite easy in parallel circuits.

animals need to consume other organisms for energy. how would you categorize them based on that information?

Answers

Answer:

They would be carnivores.

Explanation:

a single cell undergoes mitosis every five minutes how many cells will result from this cell in 20 minutes

Answers

Answer:

= 16 cells

Explanation:

Mitosis is the stage of cell division in nonsexual cells of eukaryotic organisms (that is, cells that have a nucleus). It takes place in several phases, begins after DNA duplication and ends with the separation of the two daughter cells.

It is a fundamental mechanism that occurs for the first time in the hours following fertilization.

After duplication of the genetic material, during interphase, it condenses and groups to form chromosomes with two genetically identical chromatids: this is the prophase. The nuclear membrane then dislocates, and the centromeres of the chromosomes (the area where the two chromatids of the same chromosome overlap) bind to the microtubules via the kinetochores. Gradually, all the chromosomes are sequestered at the equator of the cell: this is the metaphase.

Then, during anaphase, the chromosomes will split into two chromatids, each of which is pulled towards a pole of the cell. Thus, at each top of the cell, there is a copy of each chromosome. During telophase, the nuclear envelope will begin to reform around the set of chromosomes as the DNA gradually decondensed. The plasma membrane invaginates equatorially under the action of a ring of myosin and actin. Increasingly narrow, the bridge between the cells eventually breaks, and two cells are formed as a result of cytodieresis. Each of them can resume their growth.

Now; having understood what Mitosis is all about.

When a single cell undergoes mitosis every 5 minutes; we have the formation of two daughter cells.

Then in 20 minutes; we will have:

= [tex]2^{20/5}[/tex]

= [tex]2^4[/tex]

= 16 cells

A chemical equation is balanced if there are ______ ______ of each kind of ______________________ on both sides of the equation.

Answers

If each side of the equation has the same number of atoms of a given element, that element is balanced. If all elements are balanced, the equation is balanced. So your sentence should look like this:

A chemical equation is balanced if there are equal atoms of each kind of element on both sides of the equation.

1s^ 2 2s^ 2 2p^ 6 3s^ 2 3p^ 6 4s^ 2 3d^ 10 4p^ 2 what element is this

Answers

Answer:

please use shell notation

Is this a chemical reaction? Explain your reasoning. (Will give brainliest)

Answers

Answer:

No, it looks like there is no gas forming no foaming or burning so it is not

Explanation:

Explain the difference between potential energy and kinetic energy.



Sentence Starters

"Potential Energy is. . "

"Kinetic Energy is. . "

"The difference between potential energy and kinetic energy is. . ."

Answers

Answer:

Potential energy is the stored energy in an object or thing, while kinetic energy is the energy which an object contains because of a particular motion.

Explanation:

Potential energy is energy that is stored for example a wind up toy, it has energy but in order for you to get kinetic energy, it has to move. So kinetic energy is moving energy.

The difference is that potential is stored and kinetic is moving energy.

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3-Mention the trends in atomic size,atomic number,mass number,reactivity,boiling & melting points.

Answers

Answer:

1 sec......................

Answer:

happy halloween Baby i love you

Explanation:

A student mixed several different 12 mm plastic beads together by mistake. Luckily the beads had different densities. One group of beads had a density of 0.6 g/cm3; the other beads had a density of 1.2 g/ cm3. Describe a method the student can use to sort the beads.

Answers

Answer:

The answer is "Each student will get a glass of water and drop the bead into it  but the beads float 0.6 g / cm3 and slip down to 1.2 g / cm3

".

Explanation:

One's masses would've been dissimilar, even though their width and concentrations were also equal. Whenever the type-A mass is m,  then the type-B mass is 2 m. One should measure then, therefore.  

Water has a 1g / cm^3 density. Although Type A is higher than air, Type B is much more compact. it means will float if they place  it in water type-A where type-B sinks.

What is a polar molecule?

A. A molecule with symmetrical polar covalent bonds

B. A molecule with symmetrical nonpolar covalent bonds

C. A molecule with a negative pole and a positive pole

D. A molecule with two atoms of the same electronegativity

Answers

Explanation:

A molecule with a negative pole and a positive pole is called a polar molecule.

(d) A molecule with two atoms of the same electronegativity

What is meant by a polar molecule?

 A polar molecule is usually formed when the one end of the molecule is said to possess more positive charges and whereas the opposite end of the molecule has negative charges, creating an electrical pole.

What is a polar molecule example? Water (H2O) is a polar molecule. The bonds between hydrogen and oxygen are distributed so that the hydrogen atoms are both on one side of the oxygen atom rather than evenly spaced.Sodium Chloride (NaCl) which is an ionic compound acts as a polar molecule. Usually, the large difference in electronegativities in sodium and chlorine makes their bond polar.

Learn more about  polar molecule on https://brainly.com/question/11405437

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What is the relationship between the atomic mass of an element and a mole of the element atoms?

Answers

The mass of a pure substance represents a specific number of pure substance 'molecules', as defined by molecular weight. The relative atomic mass (atomic weight) in grams/mole (g/mol) is the molar mass of a substance, which means it is the mass of one mole of that substance.

which is a limitation of a scientific model?

Answers

Answer:

A limitation of models in science is that they are usually simplified versions of the real situation or concept.sometimes, models spark debates leading to new and improved models.A model may be used when it is impossible to create the conditions necessary to test a concept of theory.

hope it is helpful...

What is the most important scientific process

Answers

Answer:

atoms bonding

Explanation:

HELP ME THIS IS DUE TODAY PLEAS HELP SO I DONT FAIL

Answers

For the first one it’s 69 just count the little lines from the side.

CCl4(l) is placed in a previously evacuated container at 30°C , and some of the CCl4(l) evaporates. In the box below, draw a particulate diagram to show the species in the container after some of the CCl4(l) has evaporated. The phases of the species should be indicated by the spacing and distribution of the particles in the diagram. Some of the species shown in the legend will not be used.

Answers

Answer:

The phases of the species should be indicated by the spacing and distribution of the particles in the diagram

Explanation:

Evaporation would be a phase change from liquid to gas where intermolecular forces are broken CCl4 (l) -> CCl4 (g)

Diagram is attached below

We have that  from the diagram that when CCl4(l)  is placed in a previously evacuated container at 30°C , and some of the CCl4(l) evaporates that the molecules of CCl4(g)  becomes loosely held and apart from while in its closely held in its liquid state.

From the question we are told

CCl4(l) is placed in a previously evacuated container at 30°C , and some of the CCl4(l) evaporates. In the box below, draw a particulate diagram to show the species in the container after some of the CCl4(l) has evaporated. The phases of the species should be indicated by the spacing and distribution of the particles in the diagram. Some of the species shown in the legend will not be used.

Generally

We will see from the diagram that when CCl4(l)  is placed in a previously evacuated container at 30°C , and some of the CCl4(l) evaporates that the molecules of CCl4(g)  becomes loosely held and apart from while in its closely held in its liquid state

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https://brainly.com/question/17756498

Convert this mass to SI Unit: 2000g

Answers

Answer: 2 kg

Explanation:

3. magnesium oxide + ?______________________ magnesium nitrate + water
word equation:
________________________________________________________________
full equation:
________________________________________________________________
Ionic equation:
________________________________________________________________

Answers

Answer:MgO reacts with nitric acid

Snakes and similar animals are members of a group called reptiles.

How do reptiles differ from other animals?

Answers

Answer:

They have skin covered with scales.

Please help!!!!!!!!! ASAP!!!

Answers

Answer:

0.00505

Explanation:

You can google the answer or try to learn how to convert it

saturn is about 1 429 000 km from the sun. how many meters is saturn from the sun?

Answers

Answer:

1.493 trillion

Explanation:

Answer:

you must convert km to meters

Explanation:

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