what is the symbol of the periodic table for aluminum​

Answers

Answer 1

Answer:

Al

Explanation:

Al = Aluminum


Related Questions

2. If 5.4 g Al are reacted with excess HCI, how many moles of H2 will be produced?
2 Al + HCI → 2 AICI, + 3 H, (unbalanced]

Answers

Answer:

0.3 moles of H2 will be produced.

Explanation:

           Balanced reaction: 2 Al + 6 HCl → 2 AlCl3 + 3 H2

Given Al mass = 5.4 g, we know Mr of Al is 27

Using the formula:

moles = mass / Mr

moles of Al = 5.4 / 27

moles of Al = 0.2 moles

Here we see that "2" molar mass before Al; so in this reaction, "1" molar mass will have [(0.2)/2] = 0.1 moles. He see "3" molar mass before H2, therefore moles of H2 is (3 * 0.1) = 0.3 moles.

Balanced chemical equation is given by

[tex]\\ \tt\hookrightarrow 2Al+HCl\longrightarrow 2AlCl_3+3H_2[/tex]

Moles of Al:-

[tex]\\ \tt\hookrightarrow 5.4/27=0.2mol[/tex]

Now

2mol of Al produces 3moles H_2.

1mol of Al produces 1.5mol H_20.2mol Al produces 0.3 mol H_2

Are people cool when they eat ice cream?

Answers

Answer:

no not technically most of the time it is just their miles and maybe their esophagus, and also your stomach if you're lucky. Most of the time the ice cream isn't cold all the way down it is warmed up or by your core body temperature. The only way your full body would be cold when you eat ice creams if you are already cold in your and your core temperature has dropped.

Type the correct answer in the box. Express your answer to two significant figures. A scientist collects 0. 24 mole of hydrogen gas in a balloon. The temperature of the hydrogen is 35°C, and the pressure in the balloon is 1. 05 atmospheres. What is the volume of the balloon? The volume of the balloon is liters.

Answers

Volume is the amount of space occupied by any object or substance in a given defined space it can be expressed in litres. The volume of the balloon is 5.8 L.

What is volume?

Volume is a defined space occupied by any substance in a confined place with some amount of weight or mass.

The volume of the balloon can be estimated by the ideal gas equation:

[tex]\rm PV = n RT[/tex]

Where,

The pressure of the gas (P) = 1.05 atmVolume (V) =?Number of moles (n) = 0.24 molesGas constant (R) = [tex]0.082 \;\rm L\; atm\; mol^{-1}K^{-1}[/tex]Temperature (T) = 308 K

Substituting values in the equation:

[tex]\begin{aligned} \rm V &= \rm \dfrac{nRT}{P}\\\\&= \dfrac{(0.24)(0.082)(308)}{1.05}\\\\&= 5.8\;\rm L\end{aligned}[/tex]

Therefore, the volume of the balloon is 5.8 L.

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What precautions need to be observed when using methanol and a flame?.

Answers

Precautions need to be observed when using methanol and a flame are wearing a mask and gloves, performing experiment from a distance and in a careful and safe way.

Precautions needed

Methanol burns with a clear, clean flame which is dangerous if not carried properly. Wearing a mask and gloves during experiment in order to safe the hands and face from burning.

Performing experiment from a distance and in a carful way avoids the chances of accident so we can conclude that wearing a mask and gloves, performing experiment from a distance and in a careful and safe way are the precautions are needed.

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Under what conditions does the Ideal Gas Law not apply and gases are considered real? Check all that apply.

high pressure

low pressure

high temperature

low temperature

Answers

From what we know, we can confirm that the ideal Gas Law does not apply and gases are considered real under conditions of low temperature and high pressure.

What is the ideal gas law?

This law is used to describe how gasses will behave under normal conditions. However, it is not always accurate in certain conditions, the requirement for conditions to be ideal resulted in the name of the ideal gas law. This law fails at low temperatures and high pressure due to the low volume occupied by the gas under these conditions.

Therefore we can confirm that the ideal Gas Law does not apply and gases are considered real under conditions of low temperature and high pressure.

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Answer:

A and D

Explanation:

Can anybody help with these questions?

What is the % Mg in MgO?

What is the % H in Ca(C2H3O2)2?

What is the % Ba in Ba(NO3)2?

What is the % of each element in Ni3(PO4)2?

What is the % of each element in Al2(CrO4)3?

What is the % of each element in (NH4)2(SO4)?

Answers

Answer:

i do not know

Explanation:

PLZZZZZ HELPP How do you predict the bond length and energy would change if hydrogen formed a bond with Astatine (At)? ​

Answers

The bond length and energy of the bond formed between hydrogen (H) and astatine (At) would change if the bond order increases or decreases or when its potential energy is at the lowest.

What is bond length?

Bond length is also referred to as bond distance and it can be defined as an equilibrium distance between the nuclei of two (2) covalently bonded atoms in a molecule.

What is bond energy?

Bond energy can be defined as the amount of chemical energy that is required to break one mole of a given chemical bond.

In Chemistry, the bond length and energy of a molecule is typically determined by the following:

The bond order or number of bonded electrons.The potential energy possessed by the molecule.

In conclusion, you can predict that the bond length and energy of the bond formed between hydrogen (H) and astatine (At) would change if the bond order increases or decreases or when its potential energy is at the lowest.

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Pls help one chemistry question :/

In the following reaction, the energy of the reactants is 860 kJ/mol and the bond energy of the products is 680 kJ/mol. What is the total energy of the reaction? Is the reaction endothermic or exothermic?​

Answers

Answer:

the anserw should be 665KJ

Cola contains phosphoric acid and carbonic acid. Which is the most likely reason that cola also contains a large amount of sugar or other sweetener? to improve the fizziness to counteract the sourness of the acids to provide color to the drink.

Answers

Answer:

B. to counteract the sourness of the acids

Explanation:

Edge:) Good luck!

Answer:

B. to counteract the sourness of the acids

Explanation:

B. to counteract the sourness of the acids

What compounds make up the cells and other structures of organisms and carry out what process?

Answers

Answer:

Biochemical compounds make up the cells and other structure of organism and carry out life processes.Carbon is the basic of all biochemical compounds so carbon carried life process on the earth

what causes metamorphic rocks to form
Pls help

Answers

Explanation:

Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet.

please help asap! i need it fast

Answers

Answer:

*

Explanation:

- The geocentric model was unable to properly explain these changes in the inferior planets' appearance.

- All objects, including the moon, sun, and stars, have been shown to orbit around the Earth in the geocentric theory, whereas all other objects, including the Earth, moon, and stars, are said to circle around the Sun in the heliocentric theory.

Valeric acid is an organic acid composed of carbon, hydrogen, and oxygen. Valeric acid has a molar mass of 102.13 g/mol and is 58.80% C, 9.87% H, and the remainder is oxygen. What are the empirical and molecular formulas of valeric acid?

Answers

i have finish with your assignment.

how many grams are there in 11.8 moles of sodium hydroxide

Answers

Answer:

16

Explanation:

the number a grams is 16

Answer:

Roughly 471.96589800000004. Hope i helped :D

Explanation:

The mass of an object is 220g with a density of 55g/ml . Find the volume

Answers

Explanation:

from definition of density we have

density=mass/volume

and density=55 mass=220g

volume=220/55

volume=4ml

or 4×10^-3l

Answer:

4cm³

Explanation:

220.0g is our mass

55.0g/cm³ is our density

220g/55g/cm³

= 4cm³

What is gesso? a. A technique used by many Renaissance artists b. A medium used as a surface preparation or primer for a painting c. A mixture of egg yolk and pigment used to harden paint.

Answers

Gesso is a white paint blend that comprises pigment, chalk and gypsum. It is a medium utilised for surface preparation and as a primer for a painting.

What are the uses of gesso?

Gesso is widely utilized for preparing surfaces and as primers by painters. They were used by painters and artists earlier to make canvas, boards for painting purposes.

It was first formulated by chalk powder dust and pigment derived from the animal skin. They are widely used because of their adhering properties.

The use of the gesso makes the paint adhere to the canvas and the board surfaces and also, makes the surface textured.

Therefore, option b. it is used for preparing the surface is correct.

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Answer:

b on edge

Explanation:

Explain what a chemical reaction is and moles

Answers

Answer:

A process during which chemical bonds between atoms are broken and new ones are formed, producing one or more substances.

Moles are the amount of substance that contains as many particles.

Explanation:

A chemical reaction is when a chemical change occurs for example when a nail comes into contact with air and is then exposed to air it begins to rust. It forms a red-brown substance which changes the chemical composition of the original compound.

Examples of chemical reactions:

Combustion

Oxidation (rusting)

Cooking an egg

Photosynthesis

Digestion

Fireworks

Paper Burnin

The mole is the amount of substance that contains as many particles (molecules, ions or atoms) as there are in 12g of carbon.

1 mol is the amount of substance that contains the same number of particles as there are atoms in 12.0 g of carbon-12 and that number is referred to as Avogardo's constant (6.022 x [tex]10^{23}[/tex]).

What is the molar mass of a gas if 0. 473 g of the gas occupies a volume of 376 ml at 23. 0°c and 1. 90 atm?.

Answers

Answer:

The molecular weight of the unknown gas is 16.1 g/mol.

Why is it important for lab safety to know the proper names of equipment in a lab

Answers

Answer:

Knowing your lab equipment and their names will aid in having a successful experiment and may help in correcting errors.

If you do not know your lab equipment, that will only result in having a lack of knowledge of the equipment or not knowing how to correct a mistake in an experiment.

Explanation:

Hope I helped.

How can you convert diamond into graphite ?​

Answers

Answer:

There are different ways to trigger the conversion of diamond to graphite, for instance by simply heating the diamond under exclusion of oxygen or even with an aimed mechanical stroke.

Explanation:

hope it will help you have a great day bye and Mark brainlist if the answer is correct

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#carry on learning

By using ultra-short flashes of an x-ray laser

write the empirical formula for C2H4O8

Answers

Answer:

CH2O4

Explanation:

empirical formula for C2H4O8 is CH2O4

which is a physical property of a substance

Answers

Considering the definition of physical property, a physical property is a characteristic that describes an object or substance and can be measured without affecting the composition or identity of the substance.

What is physical property

A physical property is a characteristic that describes an object or substance and is based primarily on the structure of the object, substance or matter, which is visible and measurable.

That is, physical properties are those that can be measured without affecting the composition or identity of the substance. In this way, the physical properties of matter are the visible and characteristic characteristics of a substance that can be measured and do not produce new chemical substances.

Some examples of physical properties are: color, shape, size, density, melting point and boiling point.

Summary

A physical property is a characteristic that describes an object or substance and can be measured without affecting the composition or identity of the substance.

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What property is being measured in the image??
A. mass
B. Density
C.Volume
D.Height

Answers

Answer:

I'm pretty sure that the answer is c

pretty sure it’s volume

Abin is doing work by lifting a bowling ball. Which statement could be made about the energy in this situation? Energy is being transferred from the ball to his arm muscles. Energy is being transferred from his arm muscles to the ball. Energy would be recorded in units of hertz and power. Energy would change from potential to chemical.

Answers

Any capacity for doing work is called energy. It is a quantity and can be of various forms. Energy is getting transferred from arm muscles to the ball.

What are different forms of energy?

Energy is the work done by the object to perform any given task and is dependent on the factors like the distance and the force applied.

When Abin lifts the bowling ball then the object is displaced from its original position and some amount of force is applied by the arm muscles.

The chemical energy stored in the arm of Abin is a form of energy and gets transferred to the ball from the muscles so it can be lifted.

Therefore, option B. energy is transferred from the arms muscles to the ball.

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Answer:

B. It is being transferred from his arm muscles to the ball.

Explanation:

got it right.

Can someone please help me omg

Answers

I think option b is the answer

They are both heterozygous. If you look at the parents, each parent has one ‘A’ allele and one ‘a’ allele. When they have both alleles, they are heterozygous

Two changes are described below.

A green banana turns yellow and ripens.
A layer of rust forms on an iron nail.
Which statement is true about the two changes? (5 points)

Group of answer choices

Both are chemical changes because new substances are formed.

Both are physical changes because only the physical state of the substances change.

A is a physical change due to a change of state, but B is a chemical change because new molecules are formed.

A is a chemical change due to a change of state, but B is a physical change because new molecules are formed.

Answers

Answer:

Both are chemical changes because new substances are formed.

Explanation:

in both examples new substances are formed, meaning it is a chemical chang. It cannot be a physical change since it doesn’t involve a chnage in its shape, volume, length, or mass

To solve this, we must know each and every concept behind chemical change and physical change. Therefore, thee correct option is option A that is both are chemical changes because new substances are formed.

What is chemical change?

Chemical change is a reaction in which forming and breaking of new bonds take place. One molecule completely converted to totally different molecule. The number of atoms remains same.

A physical change is characterized by a differences in physical attributes. Melting, transformation to a gas, changes in strength, change in durability, changes in crystal structure, texturing change, shape, color, volume, and density are all examples of physical qualities. Tempering steel to make a knife blade is an instance of a physical change.

One famous example of chemical change is iron rusting. The arrangements , odor and colour of atoms in products are very much different from reactant. Chemical change are mostly irreversible in nature.  Ripening of banana is also a chemical change.

Therefore, thee correct option is option A that is both are chemical changes because new substances are formed.

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26) aashish has the power of 100 watt What does it means?​

Answers

Answer:

It means he could do 100 joule of work in 1 second.

Explanation:

It means he could do 100 joule of work in 1 second.

How many grams of NO can be produced from 12 g of NH3 and 12 g of O2?

please help me plsssssssss!!!!!!!!!!!!!!!!!!!

Answers

Taking into account the reaction stoichiometry and limiting reagent, 9 grams of NO can be produced from 12 g of NH₃ and 12 g of O₂.

Reaction stoichiometry

In first place, the balanced reaction is:

4 NH₃ + 5 O₂ → 4 NO + 6 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

NH₃: 4 moles O₂: 5 moles NO: 4 moles H₂O: 6 moles

The molar mass of the compounds is:

NH₃: 17 g/mole O₂: 32 g/moleNO: 30 g/moleH₂O: 18 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

NH₃: 4 moles ×17 g/mole= 68 grams O₂: 5 moles ×32 g/mole= 160 gramsNO: 4 moles ×30 g/mole= 120 gramsH₂O: 6 moles ×18 g/mole= 108 grams

Limiting reagent

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

Limiting reagent in this case

To determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 68 grams of NH₃ reacts with 160 grams of O₂, 12 grams of NH₃ reacts with how much mass of O₂?

[tex]mass of O_{2} =\frac{12 grams of NH_{3}X160 grams of O_{2} }{68 grams of NH_{3}}[/tex]

mass of O₂= 28.23 grams

But 28.23 grams of O₂ are not available, 12 grams are available. Since you have less mass than you need to react with 12 grams of NH₃, O₂ will be the limiting reagent.

Mass of NO formed

Considering the limiting reagent, he following rule of three can be applied: if by reaction stoichiometry 160 grams of O₂ form 120 grams of NO, 12 of O₂ form how much mass of NO?

[tex]mass of NO=\frac{12 grams of O_{2} x120 grams of NO}{160 grams of O_{2}}[/tex]

mass of NO= 9 grams

Then, 9 grams of NO can be produced from 12 g of NH₃ and 12 g of O₂.

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Please help me to do the warm up

Answers

The only thing you need to know is if the elements are metals or nonmetal stocks determine a type of bond. A covalent bond occurs between two nonmetals and ionic is between metal and nonmetal. Therefore 1 and 2 are covalent and 3 is ionic


Describe two ways you could show acceleration of 2m/sec?.

Answers

Answer:

video and through an algebriac expression

Explanation:

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