A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of hydrogen. If the second sample of chloroform is found to contain 26.2 g of carbon, what is the total mass of chloroform in the second sample? Mass = ______ g chloroform

Q: Zn+ 2Au(CN)2 → Zn(CN)4+ 2Au What mass of gold would you expect to recover from 2.50x105 gr

A: Zn+ 2Au(CN)2 → Zn(CN)4+ 2Au2 mol  Au(CN)2 produces  2 mol Autherefore,2 g ×Au(CN)2 produces = 2 g…

Q: AS > 0 I2(g) + C½(g)–→2ICI(g) →2NO(g) + Br2(g) 2NOBr(g)- CH4(g) + 202(g) AS < 0 CO2(g) + 2H,0(g)…

A: Given reaction with their phase. ∆S means change in entropy. ∆S = is disorder ness of the system.…

Q: Question 2: Which of the following is correct? I. 500 g written expressing 3 sig figs would = 5.000…

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Q: An oxygen atom has a mass of 2.66 × 10 - 23 g and a glass of water has a mass of 0.050 kg. Use this…

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

Q: How many Cu atoms are present in a 75.0 cm length of 20 gauge copper wire? A 20 gauge copper wire…

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Q: What is the mass of 1 atom of krypton? Group of answer choices 1x10-22 g 5x1025 g 2x10-26 g…

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: Mass of copper chloride used 1.750 g . Initial mass of zinc strip 2.650 g . Final mass of zinc strip…

A: Given : mass of copper chloride = 1.750 gram.       Percentage of water in sample = 21.2 % To find :…

Q: What is the mass of 1 atom of krypton? Group of answer choices A. 3x10-22 g B. 2x10-26 g C.…

A: Any component's amount usually depicted through a particular unit addressed as "Mole". The moles and…

Q: What is the mass (in grams) of 6.022*1023atoms of 12C

A: We know that, 1 mol = 6.022 × 1023atoms Thus, we have 1 mol of 12C

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 33.733.7 g of oxygen. Calculate the mass of the…

A: The molar mass of oxygen is 15.999 g/mol, so 33.7337g of oxygen converts to 2.10 moles of oxygen.…

Q: Which represents the greatest number of atoms? Group of answer choices 15 g of Cu 15 g of Zr 15 g of…

A: no. of atoms in Cu = 15 X 6.023X1023/ 63.5 = 1.42 X 1023 no. of atoms in Zr = 15 X 6.023X1023/ 91.22…

Q: A pure titanium cube has an edge length of 2.85 inin . How many titanium atoms does it contain?…

A: Edge length of pure titanium cube = 2.85 in Density  of titanium = 4.50 g/cm3

Q: 04. During chemical reactions, atoms combine or combination of atoms break apart and the atoms…

A: For a chemical reaction to occur, the rearrangement of atoms has to take place. In this process,…

Q: Calculate the mass (in grams) of 4.69 x 1024 carbon atoms.

A: Given : 4.69 × 1024 carbon atoms.  We know 6.022 × 1023 atoms = mass of one mole

Q: What mass of chlorine is contained in 80.3 g of ZnCl2?

A: %w/w = (mass of chlorine in ZnCl2/mass of ZnCl2) × 100

Q: Calculate the mass of 0.11 moles of Cu(NO3)2. grams Give your answer to 2 decimal spaces.

A: Given that , No. Of moles of Cu(NO3)2 = 0.11 moles

Q: A copper atom has a mass of 1.06 × 10 -22 g and a penny has a mass of 2.5 g. Use this information to…

A: Number of Moles = Given mass / molar mass

Q: 5. An experiment is performed and the results of the lab produce 54.2 grams of a compound. The lab…

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Q: CH2) + O3(g) → CO2«@) + 2H2O(g) ДН (КУmol) -249.2 Substance Substance AHf (kJ/mol) H2O1) Ocg) Oxg)…

A: Here we have to determine ∆H°rxn of the given reaction from standard enthalpy of formations data.…

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Q: Sulphur has three common isotopes, with the masses and isotopic abundances shown below: ---> 31.97 u…

A: Given that : Sulfur has three isotopes : Isotopes Atomic mass (m) % abundance Sulfur-32 31.97…

Q: A chemist is trying to identify an unknown metal, and finds that 25.0 cm³ of the substance has a…

A: Given: Volume of the metal, V=25 cm3 Mass of the metal, m=224.43 g Temperature, T=20°C

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 )…

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A: Recall the dissociation reaction of ammonium perchlorate 2NH4ClO4 -----&gt; N2 + Cl2 + 2O2 + 4H2O…

Q: What is WRONG with the following statements? Do NOT correct the mistake. Say only wrong. (a) The…

A: 1) density of iron is 7.84gm/ml 2)SnS is tin sulphide 3) NH3 have N3-  and H+ ions

Q: In this station, you will find an empty box that contains air. The density of air is 1.19 g/L. It is…

A: The number of moles of a substance represents the amount of a substance, which consists of…

Q: How many water molecules does it contain? The density of water is 1.0 g/cm3. A drop of water has a…

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Q: TUBE 1 2 4 6 7 8 9. 500ul-a 500ul-b 500ul-c 50ul-a 50ul-b 50ul-c 5ul-a 5ul-b 5ul-c LABEL Initial…

A: We are given 3 experimental values for each measurement, and we have to find standard deviation for…

Q: Calculate the mass in grams of 1 mole of footballs if one football has a mass of 0.43 kg.

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Q: 1. Solve and choose the correct answer from the given choices: a. How many atoms of tin are found in…

A: 1. We have to calculate the number of atoms present in 3.5 moles of tin, Sn. We know that 1 mole of…

Q: 5. While cleaning your attic, you find your old rock collection. If 74.2% of the rocks have a rock…

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Q: An atom of a particular element has a volume of 7.8 times 10-31m3. What is this volume in Cubic…

A: The unit of given volume is to be converted from m3 to cubic nanometres (nm3). Volume = 7.8 ×10-31…

Q: a 20 L gas tank. Assuming a molecular formula of C8H18 for gasoline and complete combustion of the…

A: Given  Volume of tank = 209 L molecular formula of gasoline = C8H18 density of gasoline = 819 g/L…

Q: A raindrop has a mass of 50.mg and the Pacific Ocean has a mass of 7.08e20kg. Use this information…

A: Given:Mass of 1 raindrop = 50 mg = 50×10-3 g.Mass of Pacific Ocean = 7.08 ×1020 Kg.

Q: 19. DETAILS OSGENCHEM2 1.6.E.090. Calculate these masses. (a) What is the mass (in g) of 2.57 cm³ of…

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Q: An instrument used to detect metals in drinking water can detect as little as 1 ug of mercury in 1 L…

A: The number of mercury atoms that is consumed by drinking 1 L of water that contained 1 µg of mercury…

Q: 27 A brick has a mass of 4.0 kg and the Earth has a mass of 6.0 x 10~' g. Use this information to…

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Q: A chemist adds 170.0 mL of a 5.72M silver nitrate (AgNO, solution to a reaction flask. Calculate the…

A: Dear student I have given answer to your question in the image format.

Q: A plant fertilizer contains 15.0 % by mass nitrogen (N). In a container of soluble plant food, there…

A: Part C given that a fertilizer contains 15% nitrogen mass of nitrogen in the fertilizer = 12.7 ×…

Q: The element rhenium (Re) has two naturally occurring isotopes, 185Re and 187Re, with an average…

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Q: An alien from the Planet X uses the units below for mass. How many zigs is 2.5 hums?  3 zigs = 1…

A: There are variety of units that are employed in measurement of mass. These smaller as well as larger…

Q: Which number has 2 sigfigs? O 1.2 x 105 O 11.11 O 276 8.

A: Option A is correct.

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Q: Assume the observable Universe is charge neutral, and that it contains n nuclei (hydrogen plus…

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Q: 2.5 kg of dinitrogen monoxide contains how many moles of Nitrogen atoms?[ Round your answer to 3…

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

Q: -23 g and a cooking pot has a mass of 0.500 kg. An iron atom has a mass of 9.27 × 10 Use this…

A: We know that, 1 mole of every substance contains Avogadro's number of atoms or molecules, i.e  6.022…

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Q: Part A - Determining Density and Using Density to Determine Volume or Mass Platinum, Pt, is one of…

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Q: A water sample has a mass of 45.433 g at 22.7 °C. Calculate the volume of the water

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".