How many melesefcoRper afe iin G,000r000oatong, of Copper

Q: Calculate the formula mass for iron (III) nitrate trihydrate. Express the answer by rounding to the…

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Q: An oxide of chromium used in chrome plating has aformula mass of 100.0 u and contains four atoms…

A: Chromium (Cr) is the transition metal that belongs to group -6 and period-4 in the periodic table…

Q: Determine the formula weight of NH₄F. Provide an answer to two decimal places.

A: Formula weight can be calculated from the given molecular formula just by adding the atomic mass of…

Q: Iron ore is impure When is heated withan excess of carbon (coke), metallic iron and carbonmonoxide…

A: Given that: mass of iron ore = 938 kg mass of pure iron = 523 kg To find: mass % of ore in…

Q: Which of the following would contain the highest number of atoms?

A: Number of moles = mass/molar mass.  1 mol contains 6.022 × 1023 atoms

Q: Chromium(III) nitrate forms a hydrate that is40.50% water by mass. What is its chemical formula?

A: If 100 % mass of Chromium nitrate is present and 40.50 % is the mass of water. Mass of anhydrous…

Q: How many gules equal are to

A: B.Th.U. is the british thermal unit of heat equal to the amount of heat required to raise one pound…

Q: A pure gold ring contains 0.0102 mmol (millimol) Au. Howmany gold atoms does it contain?

A: Given: Moles of Au = 0.0102 mmol= 0.0102×10-3 mol To find: The number of gold atoms

Q: The empirical formula of a compound is CH. If themolar mass of this compound is about 78 g, what is…

A: Empirical formula is the simplest ratio of the elements in a compound whereas molecular formula is…

Q: The percent by mass of copper(I) in CuCH3COO is?

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Q: V of electrons loss gain of hydrogen gain of electrons vgain of oxygen loss of hydrogen oss of…

A: Oxidation: In terms of electrons: Losing of electrons by an atom is oxidation. In terms of oxygen:…

Q: Find the molar mass (M) for the following chemical species, to 2 decimal places. a) Strontium metal…

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Q: The mole is defined in terms of the carbon-12 atom. Usethe definition to find (a) the mass in grams…

A: The quantity of a substance which consists of the number of carbon atoms in 12 g of pure carbon-12,…

Q: llow mass present before same as the total ma al reaction, mass is

A: Lqws in chemistry are based on evidences but theories in chemistry describe nature of the…

Q: Which of the following statements is FALSE?

A: at equilibrium rate of forword reaction is equal to rate of backword reaction  For a reversible…

Q: yleld of carbon dioxide

A: CH4   +    O2            ----------->       CO2     +            H2O…

Q: how many carbon atoms are, hyrdrogen atoms, oxygen atoms, and nitrogen atoms are in this molecule?

A: The molecule given in the question is a hydrocarbon compound which has heteroatoms (O and N).…

Q: A 1.628-g sample of a hydrate of magnesium iodide isheated until its mass is reduced to 1.072 g and…

A: Given data mass of sample  = 1.628  g mass of sample after heating = 1.072 g…

Q: tind the number of moles of the Combustion products of propaine if the abundan ce is o.85

A: A numerical problem based on mole concept, which is to be accomplished.

Q: Calculate the mass %'s for hydrogen and oxygen in the two samples given below. Is the law of…

A: The mass % of an element in a compound is given by: Mass% = Mass of element in compoundTotal mass of…

Q: e mass percent of

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Q: What is the empirical formula of a compounc

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Q: examples of chemical compound and how cn we use it in our daily life

A: Chemical compounds: If a particular substance is made up of more than one different element, then…

Q: One molecule of H2SO4 would have a mass in grams equal to?

A: Given, one molecule of H2SO4we are asked to calculate the mass of one molecule of H2SO4 in grams.

Q: the limiting reagent is the number of IF, molecules formed is and the number of atoms/molecules in…

A: Before doing this problem we must know the concept of limiting reagent  In a chemical reaction one…

Q: the percentage purity of the potassium cyanide.

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Q: Would the mass percent of copper in (either) copper oxide be greater than, less than, or equal to…

A: The amount of moisture will add to the total weight of Copper oxide first. so the mass percentage of…

Q: The following compound represents

A:

Q: of which of the following

A: ATP components are Adenine, Triphosphate and ribose if one phosphate isolate than it's also have…

Q: Fluorite, a mineral of calcium, is a compound of the metalwith fluorine. Analysis shows that a…

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Q: Melting point (°C) of the compound

A: We cannot determine exact melting  point of this particular molecule but we can determine in a range…

Q: as ny grams of aluminum oxide nitrate?

A:

Q: e density of 85% phosphoric acid is cm. What is the volume of a solution that o 17a of ph eonhorie…

A: Density= 1.70g/cm3  Mass = 17g  Let us take volume of solution to be x So as shown below  And we…

Q: what structure(s) densest possible packaging of atoms?

A: Packing factor is defined as the ratio of volume of the atoms per unit cell to the volume of the…

Q: What is the total number of atoms in a molecule of each of the following compounds?

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Q: Vinegar is a dilute Solution oe acetic acid, an organic acid, in water, wold , Whet'grouping of…

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Q: ny grams of o inds of ontor

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Q: ion, a small amount o beaker at the end oft

A: When Sodium bicarbonate(NaHCO3) and Acetic acid(CH3COOH) are combined in a beaker and allowed to run…

Q: What is the mass of 7.24x10 to the 23rd formula units of barium oxide?

A:

Q: Problem attached

A: Moles of the given compound for each atom can be calculated as follows: n=mM where n: number of…

Q: Determine the emprical fomula for this compound with the following percentage compostion 15.8%…

A: Given:% of C = 15.8%% of S = 84.2%We need to determine the Empirical formula.

Q: how many hydrogen enviornments are there for each of the molecules?

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Q: 1.0 g of hydrogen reacts completely with 19.0 g of fluorine. What is thepercent by mass of hydrogen…

A: 1.0 g of hydrogen reacts completely with 19.0 g of fluorine -

Q: The ______ is a mixture of gases: mostly nitrogen and oxygen, with smaller amounts of argon, carbon…

A: Air is a mixture of gases.

Q: mass rercentage composition by

A: Percentage composition by mass is called percent by weight. For a certain solution the mass…

Q: /hat is the percent ionization of ammonia at this concentration? xpress your answer with the…

A: Equation                NH3  + H2O ———>  NH4+ + OH- Initial     C  final     C-Cx…

Q: e the % by mass of Fe to T

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Q: A 0.235 g sample of Manganese  (Mn) was heated in a crucible  and produced   0.372 g of  a compound…

A: Given: Mass of Manganese= 0.235 g Mass of compound, MnxOy= 0.372 g To estimate: Empirical formula of…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.