The radius of an Al atom is 0.143 nm. How many Al atoms would have to be laid side-by-side to give a row of atoms 1.00 inch long?     (Assume atoms are spherical in shape.)

Q: The density of solid Fe is 7.87 g/cm³. How many atoms are present per cubic centimeter (cm³) of Fe?

A: a)  Density of Fe = 7.87 g/cm3  1 mol Fe = 56.0 g/mol  1 mol Fe = 6.023 × 1023 Fe atoms    The…

Q: Hydrazine, N2H4, can be used as fuel to orient and maneuver spacecraft. The energy used to do so is…

A: (A) Writing down the balanced chemical equation: N2O4(l) + 2 N2H4(aq) ----> 3 N2(g) + 4 H2O(l)…

Q: Chemical analyses conducted by the first Mars Rover robotic vehicle in its 1997 mission collected…

A:

Q: Which law of physics states "For a given reaction, all components of the reactants can be accounted…

A: "For a given reaction, all components of the reactants can be accounted for in the products" is…

Q: A given sample of a xenon fluoride compound contains molecules of a single type XeFn , where n is…

A: Given that 8 x 1020 molecules of XeFn weigh 0.225 g 6.022 x 1023  molecules of XeFn will weigh=6.022…

Q: If 44.0 g of molten iron(III) oxide reacts with 35.0 g of aluminum, what is the mass of iron…

A: Iron(III) oxide reacts with aluminium to form iron and aluminium(III) oxide. The equation for the…

Q: Consider the hypothetical reaction of the real-life element iron and the fictional element vibranium…

A: Solution:- Given:- Reaction > Fe + Vi →Fe4Vi3  Balanced chemical equation:- 4Fe + 3Vi → Fe4Vi3…

Q: If 3.5 g of element X reacts with 10.5 g of element Y to form the compound XY, what is the percent…

A: A chemical compound is a chemical entity made up of several similar molecules (or molecular…

Q: The percentage by mass of nitrogen is 46.7% for a species containing only nitrogen and oxygen.…

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Q: 4.104. When 2.750 g of the oxide Pbạ O4 is heated to a high temperature, it decomposes to produce…

A: Pb3O4     ------>     O2   +  PbxOy Mass of Pb3O4 = 2.750 g  Molar mass of Pb3O4 =  685.6 g/mol…

Q: How many B atoms are there in 5.1 mols of B? Please give your answer in terms of scientific notation…

A: Solution The mole thought may be a convenient technique of expressing the number of a substance. Any…

Q: The total weight of a mixture containing CaO and BaO is 0.6411 g, and the weight of anhydrous…

A: The total weight of CaO and BaO is 0.6411 g. The total weight of anhydrous sulphate salts obtained…

Q: The density of solid Cr is 7.15 g/cm3. How many atoms are present per cubic centemeter of Cr?

A: Mass = Volume x density Number of moles = Mass/molar mass Number of molecules = 6.0224 x 1023 x…

Q: On a periodic chart of the elements, molar mass (M), also called atomic weight, is often listed as…

A: A chemical compound consists of two or more different elements which are bonded with each other…

Q: Imagine you mix 16.05 g of methane (CH4) gas and 96.00 g ofoxygen (O2) gas and then ignite the…

A: First order reaction is a reaction that proceeds at a rate that depends linearly on only one…

Q: If 9.05 moles of carbon monoxide is formed in the air then mass of carbon monoxide is (A) 253.49 g…

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Q: 56.7 g of H,S reacts with 30.9 g of SO, according to this reaction + SO, 2H,S + So, = 35 + 2H,0 What…

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Q: A sample of 5.304 grams of a compound containing carbon and hydrogen reacts with oxygen at elevated…

A: Note: due to guidelines, we have to do 3 subparts.

Q: Suppose 2.367g of TiO2- containing sample evolves 0.143g of O2. What is the mass percent of TiO2 in…

A: The equation involved in the determination of purity of TiO2 sample is as follows.…

Q: 5 g of anhydrous strontium nitrate is added to a beaker and exposed to air. After several hours the…

A: Given that -  Mass of strontium nitrate =  5 g  Mass of water Increases due to exposed in air = 1.70…

Q: 2. The volume of the nucleus of a carbon atom is about 9.9 x 10-39 mL. The molar mass of carbon is…

A: Given: Volume of carbon nucleus atom = 9.9 × 10-39 mL. And molar mass of a carbon atom = 12.00…

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula C,H2n++…

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Q: What is the mass in kilograms (kg) of 4.29 X 1024 atoms of palladium?

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Q: If the mass percentage of O in a sample is 68% and the total mass of the sample is 4.128 Kilograms-…

A:

Q: When the supply of oxygen is limited, iron metal reacts with oxygen to produce amixture of FeO and…

A: Given: Mass of iron metal = 20.00 g Mass of oxygen gas = 11.20 g Mass of remaining gas of oxygen =…

Q: Is the volume of H2 produced larger than the volume of O2 producedbecause (a) hydrogen atoms are…

A: Given: The volume of H2 produced is larger than the volume of O2

Q: What quantity of Cu, in moles, can these electrons produce? Cu deposited: 0.3952 g 6.219 x 10 mol Cu…

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Q: Using dimensional analysis, convert 5.7 moles of Fluorine into atoms. (1 mol = 6.02 x 1023). Round…

A: We know that, 1 mole = 6.02 x 10^23 atoms So, Number of atom = Number of miles x ( 6.02 x 10^23)

Q: With the advent of techniques such as scanning tunneling microscopy, it is now possible to “write”…

A: Given:Surface is 20 atoms high and 14 atoms wide.Number of Platinum atoms = 20 atoms × 14 atoms =…

Q: A skeleton equation does NOT show which of the following? the physical states of the substances the…

A:

Q: Which of the following is necessary to do a complete stoichiometric calculation?  Write the mole…

A: There are four steps to complete stoichiometric calculation: Write the balanced chemical equation.…

Q: Given that 4NH3 + 5024NO+ 6H2O, if1.92 X 10 molecules NH were made to react with an excess of oxygen…

A: Given,  4NH3 + 5O2 ➝ 4NO + 6H2O Number of molecules of NH3 react = 1.92 × 1021 molecules Excess…

Q: If 10 magnesium (Mg) atoms and 10 chlorine (Cl) atoms bump into eaxh othee, could they form a…

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Q: The density of water is 1.00 g/mL at 4°C.How many water molecules are present in 2.56 mL of water at…

A: The density of a substance is the mass of the substance upon volume. The number of molecules is the…

Q: 9. If you have 9.407 x 1023 atoms of lead, how many grams of lead (IV) phosphate can you make? 10.…

A:

Q: 4. How many grams would 2.5 moles of magnesium (Mg) weigh? 5. How many grams would 10.0 moles of…

A: 4) Given : Moles of Mg = 2.5 mol Since atomic mass of Mg = 24.3 g/mol Hence mass of Mg = moles X…

Q: *(ii) The reaction of ethene with aqueous potassium manganate(VI), KMNO, produces ethane-1,2-diol,…

A: Mass spectrum is used for the separation of ions and fragmentation of ions takes place in the…

Q: The reaction between methanol and oxygen gas produces water vapor and carbon dioxide. 2 CH,OH(1) + 3…

A: From the reaction it is clear that 2 moles methanol and 3 moles oxygen reacts to give 4 moles water…

Q: 4. . Which is NOT TRUE about the Law of Conservation of mass? O The number of atoms before and after…

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Q: Metal vapor deposition is a process used to deposit a very thin layer of metal on a target…

A: Solution - According to the question - Given - Nickel (Ni) has a molar mass of 58.69 g/mol. mass of…

Q: the complete decomposition of 1.0 gram of potassium chlorate gives potassium chloride and oxygen…

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

Q: What does a chemical equation show? A. The reactants and products in a chemical reaction B. The…

A: Solution 7). A chemical reaction always shows reactants and products

Q: What is the mass occupied by 2.3 X 10 6Smolecules of Oxygen gas?

A: Number of molecules of oxygen = 2.3×1065 molecules

Q: What is the sum of the masses of 1 Fe atom + 2 Cl atoms? Enter your answer rounded to four sig figs,…

A: Given : To determine the sum of the masses of 1Fe atom + 2 Cl atoms

Q: Calculate the mass of antimony(III) lodide, Sblg, that can be produced by the reaction of 143 g of…

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Q: Use the References to access important values if needed for this question. Mn, S O, n H20 is the…

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Q: Boron trifluoride is used as a catalyst in the synthesis of or-ganic compounds. When this compound…

A: When the compound involves boron-11 and fluorine-19 isotope, the molecular mass of the compound is;…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.