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Q: When 16.8 g of carbon were burned in the presence of 55.6 g of oxygen, 10.8 g of oxygen remained…

A: One mole of carbon reacts with one mole of oxygen gas to produce one mole of carbon dioxide gas.…

Q: A student started with a sample of Cu of 8.66 grams . After the sample was burned in air, the…

A: The mass of Cu sample = 8.66 grams The mass of sample of Oxide after burning the Cu  ( Cooper oxide…

Q: 1.2x10^23 gold atoms calculate into mass, in grams

A: Given:Number of gold atoms = 1.2 x 1023 atoms.Molar mass of gold (Au) = 199.97 g/mol.

Q: A typical "lead" pencil is actually made from carbon. If the carbon in the pencil weighs 1.50 gram…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What is the key difference between an element and a com-pound?

A: The differences between  element and a com-pound are:

Q: 27) Which of the following 49.5 g samples contain the fewest number of atoms? A) platinum B) lead C)…

A: Since you have posted multiple questions as per guidelines we can solve only one per session . If…

Q: A copper ring is composed of 1.45×1023 atoms.1.45×1023 atoms. Calculate the mass of the ring in…

A: The mass of the ring in grams is to be calculated

Q: n your own words, define or explain these termsor symbols: (a) ; (b) particle; (c) isotope; (d) ;(e)…

A: Chemistry is the study of elements and compounds comprised of atoms, molecules or ions. It involves…

Q: In a combustion reaction, 46.0 g of ethanol reacts with 96.0 g of oxygen to produce water and carbon…

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Q: For the following molecule: The number of a hydrogen is (Please use numerals)

A: In organic chemistry, carbonyl compounds play an important role. Carbonyl compounds consist carbonyl…

Q: mass o

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Q: What is the mass of a 12.56L sample of carbon dioxide? A. 17.9 g B. 8.9 g C. 4501 g D. 24.7 g

A: 22.4 L of CO2 = 44g 1L of CO2=44/22.4g 12.56 L of CO2= 44*12.56/22.4 12.56 L of CO2=24.7g

Q: 99g of molybdenum-95 (isotopic mass = 94.91 amu Please enter your response to the appropriat number…

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Q: topic: matter does each sample have a measurable mass? how do you measure the mass of each sample?…

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Q: A  penny  weighs  2.507g  and  is  made  of  an alloy which  is  97.6%  zinc  and  2.4%  copper.…

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Q: LAURA E. constant mass, the residue weighs 1.941 g ydrate.

A: Weight of water = ( sample weight ) - ( residue weight )  Weight of water = ( 2.752g ) - ( 1.941g )…

Q: a mass that is 1000 times greater than 1 gram

A: Mass: It is the measure that is used to determine the amount of any substance or material. It can be…

Q: How many kII i

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Q: Calculate the mass of O, that is dis

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Q: How many sigfigs does this number have 0.021?

A: Rules:- All non-zero digits are significant. Zeros between non-zeros are significant. Trailing…

Q: what is the volume of water measured with a Beaker Beaker mass= 110.00g water mass= 45.00 water +…

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Q: - mass, in an

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Q: Analysis of 24.1 g of calcium oxide revealed that it contained 17.2 g of calcium. What mass of this…

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Q: Silicon (Si) Mass number = **** *** **** Oxygen (O) Mass number 16 %3D

A: Atomic number (Z) = number of protons (p) = number of electrons (e) Mass number (A) = Number of…

Q: What is the mass % of carbon in dimethylsulfoxide (C2H6SO)

A: We have to calculate the mass % of carbon.

Q: A student measured a 6.790 g sample of a hydrated salt. After heating, the mass of anhydrous salt…

A: a) Given that weight of hydrated salt is 6.790 g and mass of anhydrous salt is found to be 4.501 g.…

Q: For the image attached Draw a graph of the average mass vs. year. Make sure axes are labeled.

A: In the given table, the average mass and year are indicated very clearly and we only need to draw…

Q: Mass =

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Q: On average, a 1.3 gram tablet has 500. milligrams of calcium carbonate. What is the mass/mass…

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Q: he mass of 1 n

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Q: The mass of an average neon atom is 20.2 atomic mass units. One atomic mass unit is equal to…

A: The term atomic mass unit can be defined as the unit of mass which is used to express the atomic or…

Q: m mass c

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Q: che mass

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Q: Mass

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Q: Is helium metal nonmetal or metal loud

A: Helium is non - metal

Q: A solid cube of aluminum (density 2.70 g/cc) has a volume of 0.200 cc. It is known that 27.0g of…

A: Given,  The density of aluminum = 2.70 g/ cc The number of atoms present in volume 0.200 cc. of a…

Q: A student has 3.86g of iron metal what would be the mass of rust produced if all of the iron was…

A: Moles of iron present in the 3.86 g of iron metal is :

Q: What is the mass of one mole of Sg?

A: Mass of one mole of any element means it's molar mass

Q: The symbol of K+ represents one?

A: + sign indicates loss of electrons.

Q: A 93.788 g sample of carbon dioxide contains how many total atoms

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Q: mass of YE e

A: Molar mass of Iron (II) sulfate, FeSO4 = 151.91 g/mol Molar mass of Fe = 55.845 g/mol Now, 1 mole of…

Q: Why would the collective mass of twenty pennies not be equal to ‘20 x’ the mass of any individual…

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Q: What is the mass of 1.85x10^23 atoms of nitrogen?

A: Given  Number of atom of Nitrogen = 1.85 × 1023 atom  Mass of Nitrogen = ?

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.