y grams of CaCl, can

Q: A sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: Given -> CaCO3(s) -----> CaO(s) + CO2(g)  Weight of sample = 2.237 gm  Weight of CO2 formed =…

Q: Determine the empirical formula for each substance. A dead alkaline battery is found to contain a…

A: Empirical formula: The simplest positive integer ratio of atoms present in a compound is known as…

Q: Convert 4.18 x 1021 molecules/formula units of X4Z, into grams of the same compound. (Assume that…

A:

Q: A particular compound is comprised only of the elements C, H, N, and Cl. Combustion analysis of…

A: Given that: Total mass of sample = 14.30 g Mass of CO2 = 31.22 g Mass of H2O = 6.764 g Mass % of N=…

Q: A 5.000 g sample that contained NaCl and BaCl2*2H2O was heated. After heating, the sample had a…

A: Number of moles of barium chloride and water is determined as given below:

Q: When copper is heated with an excess of sulfur, copper(1) sulfide is formed. In a given experiment,…

A: Given, When copper is heated with an excess of sulfur, copper(I) sulfide is formed Also,Mass of Cu =…

Q: Lead is found in Earth's crust as several different lead ores. Sup- pose a certain rock is 38.0% PbS…

A: Given that:                       Rock consists of:                                          Galena…

Q: Šome of the formulas could be either molecular or empirical formulas; however, some can only be…

A:

Q: A 50.00 g sample of an organic compound containing only C, H and O is analyzed by combustion…

A: The objective of the question is to determine the empirical formula of the organic compound…

Q: You wish to prepare 205 grams of 14.3 % MgSsO4- You will need grams of magnesium sulfate and mL of…

A: Given that, % of MgSO4 = 14.3%  ,  Total mass = 205 gms Also, % of MgSO4 = Mass of MgSO4Total…

Q: A compound is made by carbon, hydrogena and nitrogen and 1 g of this compound contains 91.5 mg of…

A: To write the molecular formula of the compound, the number of moles of each element should be…

Q: This is the chemical formula for hexanal: CH, (сH,) сно. Calculate the mass percent of hydrogen in…

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Q: There are ______ x 1023 molecules of CO2 in 50.0 g of CO2.

A:

Q: Some of the formulas could be either molecular or empirical formulas; however, some can only be…

A: Which are among is the molecular formula ?

Q: Hemoglobin is the oxygen carrying compound found in human blood. It is found to contain 0.3335% iron…

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Q: 6. A student reported the following percentages for his unknown mixture: 25% NH4CI, 30% NaCI, and…

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Q: Mole is the term used to express the quantities of substances involved in a chemical reaction. Mole…

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Q: a 5.000g sample that contained NaCl and BaCl2 *2H2O was heated. After heating the sample had a…

A: Given : Mass of sample of NaCl and BaCl2*2H2O = 5.000 g And mass of sample after heating = 4.688 g

Q: The molar mass of one empirical unit of the antidepressant rolicyprine (C7H&NO) is 122.1 g/empirical…

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Q: 5.416g sample that contained NaCl and BaCl2*H2O was heated. After heating the sample had a weight of…

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Q: Calculate the mass, in grams, of 322 atoms of iron, Fe (1 mol of Fe has a mass of 55.85 g).

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Q: An unknown compound has the following chemical formula: Mn(CN)x where x stands for a whole number.…

A: Here we are required to find the chemical formula of the unknown compound.

Q: What is the percent NaCl in the sample?

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Q: How many grams of calcium chloride will be produced when 31.0 g of calcium carbonate is combined…

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Q: A 5.000 g sample that contained NaCl and BaCl2 2H2O was heated. After heating the sample had a…

A: We have to calculate the % NaCl in the sample.

Q: 1.75 x 1023 atoms Pb converted to grams

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Q: I. Name the two organic compounds. Br OH B. SH O =¢ si Br C =0 Catla

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Q: 3. A compound's moleeular mass is 480 g/mol. Its percentage composition is 60% sulfur and 40%…

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Q: c solvent) that contains 1.00 × 1012 molecules

A: moles of CHCl3 = ( molecules / Avagadro number )  moles of CHCl3 = ( 1.00 • 10^12 ) / ( 6.022 •…

Q: 4. Convert 2.34 moles of Al(NO), to grams.

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Q: The empirical formula of a compound is HO. This molecule has a molar mass of 17.01 g/mol. The…

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Q: An unknown compound has the following chemical formula: Mn (CN) where x stands for a whole number.…

A: Mole of carbon= 5.9Mole of Mn = 3.0

Q: compound contains arsenic (As) and oxygen as its only elements. A 1.626 g sample of the compound…

A: Empirical formal is defined as the formula which gives the simplest ratio of atoms present in the…

Q: This is the chemical formula for acetone: (CH,),CO. Calculate the mass percent of carbon in acetone.…

A: The mass percent of an element is given as follows; Given the chemical formula of acetone is…

Q: 4.25 x 1024 atoms N converted to grams

A: We have given the atoms of nitrogen = 4.25 × 1024 atoms Avogadro's constant = 6.022 × 1023…

Q: (b) H H Molecular formula Empirical formula Н. H H chemPad X₁X² H chemPad X₁X² →→ Help Greek Help…

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Q: 80 g LiCl in 100 g H2O

A: Saturated solution; Saturates solution is defined as the maximum amount of a solute can be dissolved…

Q: An unknown organic compound contains 41.4% Carbon,3.47 Hydrogen ,55.1%Oxygen by mass .A 0.040 mol…

A: Introduction In order to derive the molecular formula of any particular compound, first, always…

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.