How many atoms are in 48.8 g of pure aluminum?

Answers

Answer 1

there are 1023 atoms in pure aluminium


Related Questions

Group 1 elements have an average electronegativity of 0.84 (not including hydrogen). Group 17 elements have an average electronegativity of 2.99. These two groups often form bonds. Given this information, which kind of bond will they likely form (ionic or covalent), and what evidence supports your claim? If it is ionic, then include which group gives up its electron to the other group. In three to five sentences, explain your reasoning

Answers

The elements of group 1 makes ionic bond with the elements of group 7 due to high difference of electronegativity values.

Type of bond between group 1 and 7

The elements of first group lose its one outermost electrons while on the other hand, the elements of seven group needs one electron so they gain that one electron so they make an ionic bond with each other.

So we can conclude that the elements of group 1 makes ionic bond with the elements of group 7 because of the high difference of electronegativity values.

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In the following reaction, what does water act as? HCl + H2O = H3O+ + Cl-

Answers

Answer:

H2O is the base dissociating for H3O+.

can someone please answer this question for me? i will mark brainliest and it would also be really appreciated! :)


which of the following is a sign a chemical reaction has occurred?


A- A blue liquid is mixed into a yellow liquid, and the mixture turns green.
B- A piece of metal is placed in Water and produces sparks and gas.
C- A liquid is heated on a hot plate, And bubbles form.
D- A solid powder is mixed into a liquid and disappears.

Answers

Answer:

The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change.

B- A piece of metal is placed in Water and produces sparks and gas.

The final answers for the following problems should be written
6. Convert 2.225 x 1010 grams into kilograms.

Answers

Answer:

2.24725 kilograms

Explanation:

To convert grams to kilograms, you divide the number of grams you have by 1000. So, 800 g = 2.225 x 1010/1000 = 2.24725 kg

Identify the missing coefficient in the balanced equation and classify the type of reaction. C2H5OH + 3O2 ⟶ _____CO2 + 3H2O 2; Combustion 2; Neutralization 3; Combustion 3; Neutralization

Answers

Answer:

It is a combustion reaction

Explanation:

I'm not sure about the number, but for sure it's a combustion reaction because the products are water and co2.

explain how air pressure keeps a balloon infalted?​

Answers

Answer:

Blowing up a balloon involves forcing additional air particles from your lungs into the balloon. These particles hit the inside walls of the balloon creating enough air pressure to force the rubber of the balloon to expand and the balloon to inflate.

Explanation: hopes it helps :)

why do actinides form covalent bond?​

Answers

Answer:

bonding driven by ionic interactions.

Explanation:

if you need 2.5 mole of sodium hydroxide what mass of aodium hydroxide does weight have

Answers

Explanation:

[tex]\large{ \star \fcolorbox{magenta}{purple}{ \fcolorbox{magenta}{blue}{ \fcolorbox{magenta}{pink}{ \fcolorbox{magenta}{red}{ \sf{ 2.5g }}}}}} \star[/tex]

100 cm = 1m

(Choose all that apply)

Group of answer choices

this is an incorrect equality

This is a conversion factor

this could be written as 1m / 100 cm

this could be written as 100 cm / 1m

Answers

Answer:

This is a conversion factor

True or false?

Freshwater can occur as a gas, liquid, or solid.

Answers

True because freshwater is regular water

yes they can i am in 9th rade

What is the connection of ascorbic acid when one tablet is dissolved in 200cm cubed of water ?

Answers

Answer:

              Option-D: 2.3 × 10⁻³ mol/dm³

Explanation:

Calculate moles of ascorbic acid,

Moles = Mass / M.Mass

Moles = 0.080 g / 176 g/mol

Moles = 0.00045 mole

Also,

Molarity = Moles / Vol. in dm³

Molarity = 0.00045 mol / 0.20 dm³

Molarity = 0.00227 mol.dm⁻¹ or 2.3 × 10⁻³ mol/dm³

Which compound is composed of oppositely charged ions?

Answers

A iconic bond is a type of chemical bond formed through a electrostatic attraction between 2 oppositely charge ions.

Using a dimensional analysis conversion chart, convert 2.3*10^7 milliseconds into hours.

Answers

1s=10^3ms

Now

[tex]\\ \tt\hookrightarrow 2.3\times 10^7[/tex]

[tex]\\ \tt\hookrightarrow 23\times 10^6[/tex]

[tex]\\ \tt\hookrightarrow 23000\times 10^3s[/tex]

[tex]\\ \tt\hookrightarrow 23000s[/tex]

[tex]\\ \tt\hookrightarrow \dfrac{23000}{3600}h[/tex]

[tex]\\ \tt\hookrightarrow 6.3h[/tex]

2C2H2(g) + 502(g) → 4C02(g) + 2H20(g) reaction type?

Answers

Answer:

The answer is combustion.

Which of the following piece of information would allow one to determine how many atoms are in a specific molecule?

a.
mass of the electron

b.
empirical formula

c.
atomic number

d.
electrical charge

e.
molecular formula

Answers

Answer:

it a

Explanation:

You have to decide the grams you have or the grams you get once converted to moles by the atomic mass of the electron you find on the periodic table to get your amount of atoms…

For example…

65.3 grams of oxygen, you look at your periodic table to find the mass and you see it’s rounded to 16. So, you divide the 65.3 by 16, to get your atoms.


65.3/16 =4 atoms.


Molecular mass of the electron would allow one to determine how many atoms are in a specific molecule. Thus option A is correct.

What is molecular mass ?

Molecular mass can be defined as the measure of mass related to a molecule means the atomic weight that is the mass of every atom present in the molecule.

Suppose water is composed of 2 hydrogen atoms and 1 oxygen atom, the molecular mass of water is equals to  the atomic mass of hydrogen increased by two or more the atomic mass of oxygen.

The mass of the molecule can be controlled by many factors such as Mass Spectrometry is used to decide the mass of l molecule which is otherwise called as monoisotopic mass.

It can be controlled by Hydrodynamic Strategy which need calibration and  determine the relative atomic weight.

Static Light Scattering is used to determine the molecular weight from the measure of light dispersed utilizing the Zimm technique.

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The VSEPR theory is an abbreviation for which term?

A Valence shell electron positive repulsion
B Valence shell electron proton relation
C Valence shell electron pair repulsion
D Valence shell electron positive relation​

Answers

The answer is C (valence shell electron pair repulsion)

this is what you can pick through organs, structure or tissue : A group of cells connected together. They have similar make-up and work to do.

Answers

the answer is a group of tissue.

Phosphorus-32 (32P) is an isotope that is commonly used for medical and biological research. Phosphorus-32 has a half-life of 14.28 days. A researcher orders a sample of 32P that has an activity of 5.0 mCi when it arrives. If delivery of the sample took 48 hours, what was the activity of the sample when it was shipped from the manufacturer

Answers

The activity of the sample when it was shipped from the manufacturer is 4.54 mCi

How to determine the number of half-lives that has elapsed

From the question given above, the following data were obtained:

Time (t) = 48 hoursHalf-life (t½) = 14.28 days = 14.28 × 24 = 342.72 hours Number of half-lives (n) =?

n = t / t½

n = 48 / 342.72

n = 0.14

How to determine the activity of the sample during shipping Number of half-lives (n) = 0.14Original activity (N₀) = 5.0 mCiActivity remaining (N) =?

N = N₀ / 2ⁿ

N = 5 / 2^0.14

N = 4.54 mCi

Thus, the activity of the sample during shipping is 4.54 mCi

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Which of the following are forms of ENERGY? Click all that apply!
O LIGHT
O SOUND
O ELECTRICITY

Answers

All Of the above basically

Some chemical reactions releases energy other store energy what important chemical reaction storage energy?

Answers

Answer:

endothermic reaction

Explanation:

a chemeical reaction that stores energy is called endothermic reaction. More energy released as products form than the energy needed to break the reactants apart.

how do I solve this organic chemistry question?

Answers

Answer:

a) 3,3-dimethyl-2-butanol

b) Attached below

c) Yes, this compound is optically active because it has one chiral carbon. Highlighted as Red below.

d) Structures attached below.

e) Isomers shown below.

how do you calculate metal density?

Answers

Answer:

You can divide the mass by the volume to calculate the density of the metal

Explanation:

Write the steps you would use   for ing tea. Use the words solution, solvent solute, dissolve, soluble, insoluble, filtrate an residue.​

Answers

Answer:

Take a cup of water, as solvent, in a kettle and heat it.Add sugar, the solute, to water. Heat it. The sugar dissolves in water.Sugar is soluble in waterAdd some tea leaves. It is insoluble inwater. Colour of tea leaves goes into the solution.Boil the content and add milk, which is soluble in water.Filter the tea with the help of a strainer. The tea collected in the cup is a filtrate.The tea leaves collected on the strainer is residue.

 

-TheUnknownScientist 72

Explanation:

water, as solvent,

sugar, the solute,

sugar dissolves in water.

sugar is soluble in water

tea leaves is insoluble in water.

milk, which is soluble in water.

H2CO3(aq) → CO2(aq) + H2O(l) After strenuous exercise, you breathe heavily, exhaling and removing CO2 from your body. The removal of CO2 causes a shift to the __________ and the ____________ of carbonic acid in the blood to help maintain a safe blood pH range.

Answers

Answer:

did you find the answer

Explanation:

help

Answer:

D. right ; decomposition

Explanation:

What is the mass of 11 moles of water (H2O)?

Answers

Answer:

               198.11 g

Explanation:

Moles = Mass / M.Mass    ...... (1)

Also,

M.Mass of Water = 18.01 g/mol

Moles of Water = 11 moles

Solving eq. 1 for mass,

Mass = Moles × M.Mass

Putting values,

Mass = 11 mol × 18.01 g/mol

Mass = 198.11 g

When the temperature of water increases the density increases as well.

True
False

Answers

Answer: False

Explanation: When the temperature of water increases the density decreases.

Explain how storm surges can affect human life in Florida.

Answers

As a result of high winds and water from a storm surge, homes, businesses, and crops may be destroyed or damaged, public infrastructure may also be compromised, and people may suffer injuries or loss of life.

In this reaction: Mg (s) + I₂ (s) → MgI₂ (s), if 10.0 g of Mg reacts with 60.0 g of I₂, and 53.88 g of MgI₂ form, what is the percent yield?

Answers

We know the law of conservation of mass

It states that mass is neither formed nor destroyed in any chemical reaction.Mass of reactants=Mass of products.

Here

Mg and I_2 are reactantsMgI_2 is product with some yield.Mass of reactants=10+60.0=70.0gMass of MgI_2=53.88gMass of yield=Product-MgI_2=70-53.88=16.12g

Lets find the percentage

[tex]\\ \tt\hookrightarrow \dfrac{Mass\:of\:yield}{Total\:mass}\times 100[/tex]

[tex]\\ \tt\hookrightarrow \dfrac{16.12}{70}\times 100[/tex]

[tex]\\ \tt\hookrightarrow 0.23028(010)=23.028\%[/tex]

If 10.0 g of Mg reacts with 60.0 g of I₂, and 53.88 g of MgI₂ form then the percent yield is 47.09%.

What is percentage yield?

The percentage yield shows how much product is obtained compared to the maximum possible mass. When experimenting with different solutions or in the manufacturing of chemical solutions we have by-products and the actual intended products and errors in calculating them as well that makes calculated yield different from theoretical yield. Mathematically, it is given by

%yield = (calculated yield ÷ theoretical yield) × 100

Given,

10.0 g of Mg  

60.0 g of I₂

53.88 g of MgI₂ forms

Mg (s) + I₂ (s) → MgI₂ (s)

24.3g Mg forms 278.11g MgI₂

1g Mg forms 11.44g MgI₂

10.0 g of Mg forms 114.4g MgI₂

%yield = (53.88 ÷ 114.4) × 100 = 47.09%

Therefore, if 10.0 g of Mg reacts with 60.0 g of I₂, and 53.88 g of MgI₂ form then the percent yield is 47.09%.

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If the image shows a model of ocean fossils but the actual fossils were found in the desert, what might one assume about the history of the area where they were found? Its for my sis quiz.


A.That at one time the environment was much colder in Antarctica.


B.That the land of this desert is relatively young geologically speaking.


C.That at one time, the environment of that desert was under an ocean.


D.That at one time in the distant past someone threw away some marine fossils in the desert.

Answers

Answer:

C

Explanation:

The cold doesn't mean water (A), the age of the desert doesn't mean much in this context (B), that doesn't make any sense (D), but the desert being an ocean in the past does explain where the fossil came from because the organism would have been in the area before death.

What do all acids have in common?

Answers

All acids contain hydrogen

Answer:Both acids and bases produce a part of a water molecule. Bases dissociate hydroxide (–OH) ions and acids, hydrogen (H+) ions

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