There are 6. 022 Times. 1023 atoms of Hg in 1 mole of Hg. The number of atoms in 4. 5 moles of Hg can be found by multiplying 4. 5 by 6. 022 Times. 1023. Which is the number of atoms in 4. 5 moles of Hg, correctly written in scientific notation with the correct number of significant figures? 2. 7 Times. 1024 27 Times. 1023 2. 71 Times. 1024 27. 099 Times. 1023.

Answers

Answer 1

The number of atoms of Hg in 4.5 mole sample has been given as [tex]\rm 2.7099\;\times\;10^2^4[/tex]. Thus, option A is correct.

The number of atoms in a mole of sample has been given by Avogadro number. Avogadro number has been a constant and has been given the value of [tex]\rm 6.023\;\times\;10^2^3[/tex].

The number of atoms in a mole of sample has been given as:

[tex]\rm 1\;mole=\;6.022\;\times\;10^2^3[/tex]

The given sample has been consisted of 4.5 moles of Hg. Thus, the number of atoms in the sample has been given by:

[tex]\rm 1\;mole\;Hg=\;6.022\;\times\;10^2^3\;atoms\\4.5\;mol\;Hg=4.5\;\times\;6.022\;\times\;10^2^3\;atoms\\4.5\;mol\;Hg=27.099\;\times\;10^2^3\;atoms[/tex]

The scientific notation has been the short hand used for writing the numbers. The short hand for atoms in 4.5 moles of Hg has been [tex]\rm 2.7099\;\times\;10^2^4[/tex].

Thus, the number of atoms of Hg in 4.5 mole sample has been given as [tex]\rm 2.7099\;\times\;10^2^4[/tex]. Thus, option A is correct.

For more information about the number of atoms, refer to the link:

https://brainly.com/question/20672430


Related Questions

The most recent model of an atom is the_____.

Points: 67

Answers

Answer:

answer is electron cloud model

Compare the structure and bonding of the three compounds:
• carbon dioxide
•magnugum ondo
•silicon dioxide

(6 mark question)

Answers

Silicon dioxide is a covalent network solid. Magnesium oxide is an ionic compound while carbon dioxide is a covalent molecule.

Carbon dioxide is a covalent compound. The compound contains polar C-O bonds but overall the compound is nonpolar as such the molecules are held together by only weak dispersion forces.

The compound magnesium oxide is an ionic solid. It is composed of magnesium ions and oxygen ions in a crystal lattice. Owing to the fact that the ions are very small, the lattice energy is large and the compound is almost insoluble in water.

Silicon dioxide is a covalent network solid which is composed of chains of silicon - oxygen bonds. The network solid forms a very rigid structure having a high melting point.

Learn more about network solids: https://brainly.com/question/8236583

Between what two elements does hydrogen bonding occur?

Answers

Answer:

it can occur between hydrogen and 3 other elements

Explanation:

These elements are:

Nitrogen

Oxygen

Flourine

Match each term in the first column with an example in the second column. On a sheet of paper, write the letter of the answer.

1. physical property

2. chemical property

A ability to burn

3. solid

4. liquid

B rust appears on a nail C a puddle freezes

5. physical change

6. chemical change

D substance that has a definite shape and volume

E temperature or density

F substance that has a definite volume, but no definite shape

Answers

Answer:

wait can you go more in detail i can help you because i dont understand whats going on

A reaction that had two compounds as reactants and two compounds as products is most likely a

Answers

double-replacement reaction

which is the first news paper of Nepal​

Answers

Answer:

Nepal Bhasa Patrika

Explanation:

Nepal Bhasa Patrika

Choose all the answers that apply.

What’s is the freezing point of water?

1. 0’c

2.32’c

3.32’F

4.0’F

Answers

Answer: The answers are the first and third options.

Answer:

1.0'c

3.32'f

Explanation:

When a hurricane approaches land, people living directly on the
coast should always evacuate when told to do so by authorities.

Answers

Answer:

True

Explanation:

When a hurricane is dangerous enough that authorities say to evacuate, you should for your own safety.

Alison observes that when she injects additional gas molecules into a container of gas, the number of collisions in the container (and the pressure inside) increases. She then increases the volume of the container just enough to restore it to its original pressure. Which of the following laws best describes what Alison observed?
A. Amonton's Law
B. Avogadro's Law
C. Boyles Law
D. Charles's Law
E. Dalton's Law

Answers

Answer:

Explanait it is not d

Rain is-pouring down on you. Your friend asks where so much water
came from. You explain that the water could once have been
a) in a lake.
c) in an ocean.
-b) in-a river.
d) any of the above.

Answers

Answer:

D

Explanation:

It could come from anybody of water around you that had some water evaporated.

The answer is D precipitation comes from all evaporated water

one difference between a chemical formula and a chemical equation is that the chemical equation shows:

Answers

A chemical reaction taking place

Ethanol (C2H5OH) reacts with oxygen gas in a combustion reaction. How many liters of carbon dioxide gas are produced at STP when 375 mL of a 75.0% ethanol solution by mass with a density of 1.22 g/mL reacts with excess oxygen?

Answers

The volume of carbon dioxide produced when 375 mL of a 75.0% ethanol solution by mass with a density of 1.22 g/mL reacts with excess oxygen is  667.52 L.

We are told in the question that the solution contains 75.0% ethanol solution by mass.

Hence;

Density of solution = mass/volume

mass = Density × volume = 1.22 g/mL × 375 mL = 457.5 g

Mass% = mass of solute/ mass of solution × 100

Mass of solute = x

Mass of solution = 457.5 g

Mass percent = 75.0%

Substituting values;

75 = x/457.5 + x × 100

75/100 = x/457.5 + x

0.75(457.5 + x) = x

343.125 + 0.75x = x

343.125  = x -  0.75x

x = 343.125/0.25

x = 1372.5 g

The equation of the reaction is;

C2H6O(l) + 3O2(g) → 2CO2(g) + 3H2O(l)

Number of moles of ethanol =  1372.5 g/46 g/mol = 29.8 moles

From the reaction equation;

2 moles of ethanol produces 2 moles of carbon dioxide

29.8 moles of ethanol also produces 29.8 moles of carbon dioxide

If 1 mole of carbon dioxide occupies 22.4 L

29.8 moles of carbon dioxide occupies 29.8 moles × 22.4 L/ 1 mole

= 667.52 L

Learn more: https://brainly.com/question/17638582

calculate the energy of a photn of red light with a wavelength of 6.45x10^-5cm

Answers

Answer:

6.45 × 10-5 centimeters

Explanation:

has anyone done 4.3.4 Practice: Mixtures of Matter...I need help :/

Answers

The types of mixtures are homogeneous and heterogeneous, you can identify these based on their features.

A mixture occurs when two or more materials are mixed or combined. For example, if you combine two or more liquids. Moreover, this can lead to two types of mixtures:

Homogenous mixtures.Heterogeneous mixture.

Each of these has defined features that affect the characteristics and properties of a mixture:

Homogenous mixtures:

Once the mixture is done its components cannot be easily identified.The composition is uniform.Some examples include lemonade, smoothy, and concrete.

Heterogeneous mixture:

The components can be easily identified and even separated after the mixture.The composition is not uniform.Some examples include salad, pizza and oil mixed with water.

Note: This question is incomplete because of this, I answered based on general knowledge.

Learn more about mixtures in: https://brainly.com/question/24898889

Which statement correctly describes the relationship between molecular structure, the strength of electrostatic forces between
molecules, and the boiling point of a substance? (1 point)
The boiling point of a substance affects the strength of electrostatic forces, which can affect the molecular
structure
The boiling point of a substance affects its molecular structure, which can affect the the strength of
electrostatic forces.
Molecular structure affects the strength of electrostatic forces, which can affect the boiling point of a
substance
Stronger electrostatic forces cause a stronger molecular structure and lower boiling points

Answers

Molecular structure affects the strength of electrostatic forces, which can affect the boiling point of a substance is the statement that correctly describes the relationship between these terms.

The molecular structure is the way in which the atoms that are in a molecule are arranged in space, this is defined by a series of forces that hold the atoms together in a specific arrangement.

The boiling point is the temperature at which the vapor pressure of the liquid equals the pressure that surrounds the liquid, when this happens, the liquid transforms into gas.

For a compound to vaporize, the forces that hold the molecules together must be broken, this means that the boiling point of a compound depends on the attraction between the molecules, that is, on the forces that determine the molecular structure.

If the molecules are held together by strong electrostatic forces, it will take a lot of energy to push the molecules away from each other and the compound will have a very high boiling point.

Therefore, we can conclude that the boiling point depends on the molecular mass of the substance and the type of electrostatic forces present, that is, the bonds that the atoms establish with each other to form the molecule (molecular structure).

Learn more about molecular structure here: https://brainly.com/question/25799404

Balance the equation:

Answers

Ca(OH)2 +2 HBr → CaBr2 + 2 H2O 

Can someone help please

Answers

Answer:

To achieve stability

Explanation:

Chemical reactions happen so that the atoms of the elements involved in the chemical reaction will become stable and therefore achieve stability.

What type of chemical reaction is Al + FeO --> Al2O3 + Fe

Answers

Answer:

single reaction equation

Explanation:

Type of Chemical Reaction: For this reaction we have a single replacement reaction. Balancing Strategies: In this single replacement (also called displacement) reaction the Al and Fe are switching places.

I am having the worst day ever, Someone please cheer me up. :( I'll mark you as brainiest. :(

Answers

Once I told a chemistry joke

I got no reaction.

What do you do with a sick chemistry teacher?

If you can't helium, and can't curium, you might as well barium.

I don't trust atoms,

I heard they make up everything

Hope I helped make ur day. :)

How can I increase the time over which the collision occurs?

Answers

Explanation:

The laws of physics determine that the force of impact increases with the square of the increase in speed. So, if you double the speed of a car, you increase its force of impact four times. If you triple the speed, the impact is nine times as great.

Observe that the greater the time over which the collision occurs, the smaller the force acting upon the object. Thus, to minimize the effect of the force on an object involved in a collision, the time must be increased.

1: How can you divide Pepper & Sand to make a solution?

Answers

To Divide Sand & Pepper to make a solution, You would need to get the base Proti and mix it with the secondary Proti than add heated water to Sand and Pepper to make the solution. Just like we went over class..

Answer:

Mixture of sand, pepper powder and salt can be separated by dissolving the mixture into water. Sand and pepper powder is insoluble in water while salt is soluble. So they are separated by the filtration method.

WILL GIVE BRAINLIEST


Which model provides more information-a chemical formula or a sketch of the molecule

like in the structural formula? Explain your reasoning.

Answers

Answer:

Explanation

:Both b/c a chemical formula tells you how many and a sketch formula shows how they are bonded together.

Molecular formulas show how many atoms of each element one molecule of a compound contains. Note: Ionic compounds are generally crystalline solids with high melting points. Other compounds, however, have very different properties.

1. How many centimeters are in 13.4 inches?

Answers

34.036 Thats how many

Answer:

34.036

Explanation:

There are 2.54 centimeters in one inch so you multiply 13.4 and 2.54 to get 34.036.

How many grams of oxygen would be contained in 4.00 L at 158kPa and 28 C?

Answers

Answer:

it would be 53

Explanation:

because 4.00 L at 158kPa and 28c would be 53 grams of oxygine

discuss why people use the scientific method

Answers

Answer:

They use the scientific method to study different aspects of how people think and behave. They also use the scientific method because it is evidence-based, standardized and objective in conducting experiments.

`Carbon Dioxide and Water are the _______ in a chemical reaction. 2. Reactants are also called the starting _______ in a chemical reaction.: Reactants are also called the starting _______ in a chemical reaction. 3. This type of energy comes from the sun: a This type of energy comes from the sun 4. You get this type of energy from food: b You get this type of energy from food 5. The process by which plants use the sun to produce glucose and oxygen.: The process by which plants use the sun to produce glucose and oxygen. 6. The products of photosynthesis: The products of photosynthesis 7. The location of photosynthesis in plant cells: The location of photosynthesis in plant cells 8. Another name for glucose is: Another name for glucose is 9. Energy is provided by this cell organelle during cellular respiration: Energy is provided by this cell organelle during cellular respiration 10. The largest source of energy on earth comes from the: d The largest source of energy on earth comes from the Column B a.Chloroplast b.Ingredients c.Reactants d.Sun e.Radiant energy f.Sugar g.Chemical energy h.Glucose and Oxygen i.Mitochondria j.Photosynthesis

Answers

the answer would be elector literally

Sounds with great amplitude are ____________

Answers

Answer: LOUDER

Explanation:

. A larger amplitude means a louder sound, and a smaller amplitude means a softer sound.

7
How many grams are there in 5 moles of CO2?
A 225.5 g
B) 220.05 g
C)240 g
D) 230 g

Answers

Answer: 44.01g

The molecular mass of carbon dioxide is 44.01amu. The molar mass of any compound is the mass in grams of one mole of that compound. One mole of carbon dioxide molecules has a mass of 44.01g, while one mole of sodium sulfide formula units has a mass of 78.04g. The molar masses are 44.01g/mol and 78.04g/mol respectively
The answer is 220.05

Which of the following is unlikely to form a compound?

a. S
b. H
c. K
d. Ar
d. Si

Answers

Answer:

I think the answer is Ar, k or just k. Can you pick two answers?

Explanation:

I hope this helps.

P.S. you put two d's

Chlorine has 7 valence electrons. Describe the type of bond that sodium would have

with chlorine. Write the chemical formula of the compound these two elements would form together. (i figured it out nvm)

Answers

As chlorine has 7 valence electrons and sodium has 1 valence electron so to become stable and complete their octets sodium will become a cation by losing one electron and chlorine will form an anion and will gain one electron in this way both will become stable and an ionic bond will form between sodium and chlorine
Chemical formula:
Na + Cl —> NaCl
Other Questions
Is prescribing more medications than necessary for treatment an example of fraud, waste, or abuse? A city's water division generated $1.5 million in revenue. It reported expenses of $1 million, which included $200,000 paid to an internal service fund. The water division also transferred $50,000 to the general fund. What amount is the water division's change in net position on the statement of revenues, expenses, and changes in fund net position The following are organs used for speech production except one(a) the glottis (b) the uvular (C) the teeth ridge (d) alvedar space i need hep with this reading check Dom mowed 2/5 of his lawn. Maddy mowed 1/4 of it. who mowed most. how much more needs to be mowed Who was John of Damascus?A) An early Christian bishopB) A monk who defended the use of iconsC) A translator of the Bible into modern RussianD) A chief advisor to Emperor Constantine What is the formula for this compound?1 atom of copper, 1 atom of sulfur, 4 atoms of oxygen 2.4(3q+6.1)HELP MEE!!! x-(2x+3)how to solve and why you change the sign for the +3? The sum of 3 and mA.x-3B.1/2yC.3+mD.14+3xE.x+5F.14+4x President Reagan's tax cuts were implemented in order to encourageo shortages of goodso economic growthO wage and price controlsO stagflation You decide to reduce the amount you spend eating out by $150 a month and invest the total saved atthe end of each year in your retirement account. How much will the account be worth at 5% in 15years? (Use Table 13.1.) (Do not round intermediate calculations. Round your answer to thenearest cent.) 10-4/4x89-1/2+43992/69x174 With a coupon, you can get a pair of shoes that normally costs $84 for only $72. Whatpercentage was the discount? Show your work!LZ Math 7 If a - 5b - 3 = 8, then the straight line ax + by + c = 0 must pass through the point I) (1, 5) II) (1, -5) III) (5, -1)IV) (-1, 5) Please show your work...No spam.. Thank you. This graph shows the amount of (s) money in Jack's account after (w) weeks. Which equation represents the amount of (s) money in Jack's account after (w) weeks? Two motorcyclists, who start their journeys at the same instance from two different cities, travel with uniform speeds of 40 km/h and 50 km/h respectively towards each other. If they meet each other after 1.5 hours after commencing their journeys, find the distance between the two cities. QUICK Which property is illustrated by the equation?(2x + 1) + 3y = 2x + (1 + 3y)Answers: Commutative Property of Addition, Identity Property of Addition, Associative Property of Addition, or Distributive Property of Addition. How could a countrys citizens benefit from the federal government collecting more tax revenue? Conversely, how could they benefit from the federal government collecting less in taxes? What type of business is formed with the primary purpose of serving its user- members? O A. Partnership B. Corporation O C. Sole proprietorship D. Cooperativeno linkss