Consider separate 100.0-g samples of each of the following: NH3, N₂O, HCN, N₂H4, and HNO3. Which of the samples has the greatest mass of nitrogen? N₂O N₂H4 HCN HNO3 NH3

Q: A common laboratøry preparation of ørygen gas is the thermal decomposition of potassium chlorate…

A: Given :-  KClO3 → KCl + O2  Mass of KClO3 = 28.57 g  To calculate :-  Mass of O2 (in g)

Q: Considering the chemical equation below 4 NH3 + 5 O2 -4 NO + 6 H20 Suppose a vessel contains 6.45 g…

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Q: Calculate mass percent of each element in perchoric acid, HCLO4 ?

A:

Q: Acetaminophen (pictured) is a popular nonaspirin, "over-the-counter" pain reliever. What is the mass…

A: Given,             AcetaminophenRequired,                   The mass % of each elements in…

Q: How many atoms of carbon are contained in 47.6 g of Al2(CO3)3? The molar mass of Al2(CO3)3 is 233.99…

A: First convert the given grams of Al2(CO3)3 to moles.  Moles=MassMolar mass=47.6 g233.99 g/mol=0.2034…

Q: Lithium and nitrogen undergo the following reaction: 6 Li (s) + N₂(g) → 2 Li³N (s) Calculate the…

A: IntroductionWe are presented with a chemical equation that describes the reaction between lithium…

Q: During the decomposition of KClO3, 7.23 grams of oxygen gas are created. How many moles of KClO3…

A: The reaction is: 2 KClO3 → 2 KCl + 3 O2 mass of O2 gas formed = 7.23 g

Q: H. H H H H 'I H H -I H H H CH₂CH3 HO™ DMSO

A:

Q: When a mixture of BaO and CaO is transformed to mixed sulfates, its weight is doubled. Calculate the…

A: When BaO and CaO mixture is transformed to mixed sulphate, it results into formation of BaSO4 and…

Q: What mass of N2 is needed to produce 10.00 g N3F? 3N2 + F2 ⎯→ 2N3F

A: Number of moles present in 10.00 g N3F is determined as shown below: No.of moles=massMolar massNo.of…

Q: How many sulphur atoms are contained in 30 g of Al2(S04)3 (Molar mass: 342.15 g/mol) ? OA 5.78 x…

A: Applying no. of moles  n= w/M  NA= 6.022E+23

Q: How many grams are in 1.18 x 1021 HF molecules? H = 1.008 g/mole and F =19.00 g/mole

A: Number of mols = Weight in gMolecular weight in g/mol Then Weight of the substance = Number of mole…

Q: Calculate the empirical formula for a compound with 30.43% N and 69.57% Oby mass. N20 O N2O5 O NO2

A: To solve this problem we have to calculate the empirical formula of the compound .

Q: Sodium azide, an explosive chemical used in automobile airbags, is made by the following reaction:…

A: Given, mass of NaNO3 = 10.0 g mass of NaNH2 = 15.0 g percentage yield = 100%   To calculate : mass…

Q: Oxygen gas can be produced by the decomposition of Hydrogen peroxide (H2O2) H2O2 (l) → H2O (l) + O2…

A: Hydrogen peroxide decomposes into hydrogen and oxygen gas. The equation for the balanced chemical…

Q: How many H atoms are present in 8.0 g of CH4? O 3.0 x 1023 O 8.3 x 10-25 O 3.7 x 1023 O 1.2 x 1024 O…

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Q: Ethanol has a molecular formula C2H5 A sample of ethanol has a mass of 2.3 grams. The sample was…

A:

Q: estion 3 Consider the following chemical reaction. It is mostly balanced, but missing the proper…

A: balanced chemical equation occurs when the number of the different atoms of elements in the…

Q: How many grams of Oxygen are needed to make 7.1 g of Chlorine? SeCl6 + O2 --> SeO2 +  Cl2

A: First we balance the reaction,  then we calculate the amount of O2 required to prepare 7.1 g of Cl2.

Q: 8. Convert 37.482 g of N₂O4 to nitrogen atoms.

A: In one mole of any substance there are 6.023 * 1023 number of entities present.

Q: how many grams of aluminum are required to produce 17.5 grams of hydrogen?

A: Given :- 6 NaOH + 2Al --> 2Na3 ALO3+3H2                 mass of H2 = 17.5 g   To be calculated :-…

Q: - Use dimensional analysis to convert 1.75 mol Mg3(PO4)2 to grams of Mg3(PO4)2-

A: Convertion of moles into mass by using below relation Number of moles = mass of compound/ molecular…

Q: How many grams of mercury (Hg) are produced from 87.6 grams of mercury(II) sulfide? 4 HgS + 4 CaO…

A:

Q: Calculate the percent composition by mass of each element in Al(OH)3. Use at least three significant…

A: 1 mol of Al(OH)3 contains 1mol of Al, 3 mol of O and 3 mol of H atoms.  Molar mass of Al(OH)3 =…

Q: For the chemical reaction 2KI+Pb(NO3)2-->PbI2+2KNO3 what mass of lead (ii) is produced from 1.13…

A: Given: Moles of KI = 1.13 g Molar mass of PbI2 = 461.01 g/mol

Q: 3 Na + FeCl3 →Fe +3 NaCl Which of the following statements correctly explains the steps needed to…

A: Given chemical reaction is   3Na + FeCl3 -> Fe + 3NaCl In the above mentioned reaction, FeCl3 is…

Q: 2 KClO3              2 KCl + 3O2 How many grams of O2 will be formed from 3.76 grams of KClO3

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Q: A chemist weighs 50.0 grams of solid NaOH. a) How many moles of NaOH are in the sample? [ Select ]…

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Q: How many moles of N2O4 can be formed from 4.25 g NO2?

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Q: Which of the following has the smallest mass? I. 18 g H2O II. 1.0 × 1024 H2O molecules III. 0.50…

A: In the above question different expression for measuring the mass are provided. These expressions…

Q: Nitric acid is used in the production of fertilizer as well as nitroglycerin.  Convert 2.9 x 1021…

A: Since, we know that ; 1 mol of nitric acid contains 6.022 × 1023 molecules. So,  2.9 × 1021…

Q: N2 + O2 —> 2NO How many grams of N2 are required to produce 6 moles of NO?

A: In  order to calculate the mass of NO firstly we need to calculate molar mass of NO then we can…

Q: Complete the table below for calculating the molar mass of the compound tetraphosphorus decaoxide. P…

A: Given compound is tetraphosphorus decaoxide. The molecular formula of tetraphosphorus decaoxide =…

Q: A 22.2g sample of lead (207.2 g/mol) was completely reacted with excess nitrogen (14 g/mol) in a…

A: Empirical formula :-  The chemical formula which shows only the  simplest mole ratio of atoms of…

Q: Aluminium has a density of 2.70 | g/cm3 . How many moles of aluminum are in a 13.2 cm3 block of the…

A: Density :- Density of a substance is its amountof mass per unit volume . So , density is the…

Q: If equal masses of N2 and H2 (7.00 grams each) are combined to produce ammonia NH3, how many grams…

A:

Q: According to the following reaction, how many moles of calcium oxide will be formed upon the…

A: Given reaction -- CaCO3 ----> CaO + CO2

Q: 15 mL of Cl2O7 (density = 1.9 g/mL) reacts with 10. mL of H2O (density = 1.0 g/mL). How many…

A: we have the equation as Cl2O7 + H2O→2HClO4 We know that, Density =MassVolume Hence Mass=Density X…

Q: Draw the structure of the major organic product of the following reaction. CH₂ 1. Hg(OAc)2. H₂O 2.…

A: Given reaction:Draw the structure of the major organic product  Note:Do not have to consider…

Q: how many moles of NH3 can be made from 12.5 moles of N2?

A:

Q: Which one of the following is not equivalent to one mol of the substance? O 8.0 g He O 6.02 x 1023 C…

A: The correct option is:

Q: Convert 40.0g K3PO4  to molecules of K3PO4 . choose the correct multiple choice underneath. 40.0…

A: Given mass of K3PO4  = 40 g

Q: Calculate the mass of 3.62 x 1024 molecules of Vitamin A which has a molar mass of 180g/mole. O 1.08…

A: Given,the number of molecules of vitamin A =3.62×1024 moleculesmolar mass of vitamin A =180 gmolwe…

Q: Determine the number of atoms in 3.50 g of an unknown substance with a molar mass of 197g/mol. * O…

A: NOTE : Since the number of atoms in each molecule of substance or the formula of substance is not…

Q: What mass of XeCl4 contains 11.245 x 1022 molecules of XECI4? Molecular mass (g/mol) XeCl4: 273.09…

A: We determined mass of XeCl4 by using avogadro's number. NA = 6.022×1023 molecules per mole .

Q: Calculate the empirical formula of a compound that contains 20.17% carbon, 2.521% hydrogen, 23.53%…

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Q: If 6 moles of Si and 6 moles of N2 are combined in a reaction flask, what remains in the reaction…

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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.