Sonya is working in the lab. She measures an initial 10 g of Silicon into a beaker weighing 27 grams. After Sonya performs her experiment she reweighs the beaker with the silicon and records a mass of 39.5 grams. Calculate the percent yield of silicon. e here to search

Q: How many grams of ammonia (NH3) will be required to produce this amount of nitrogen

A: Balanced equation:               2NH3 - 3H2 + N2 Moles of N2 =16.16g/28gmol-1 =0.8978mols

Q: 3. Nitrogen, when combined with oxygen, can form various oxides. 3.5 g of nitrogen gas is burned in…

A: reaction of nitrogen and oxygen : N2+O2→NO+NO2+N2O This reaction is showing the possibility of…

Q: A 1.836 grams sample of coal contains 1.584 g of carbon.  What is the percent composition of carbon…

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Q: e this information to answer the questions below. Be sure your answers have the correct number of…

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Q: If you had 65.0 grams of charcoal, how many grams of black powder could you make?

A: The black powder used to propel each firework into sky is made by 75% by mass potassium nitrate, 15%…

Q: Strontium phosphate, Sr3(PO.)2 is a crystalline substance used in medicine and industry. How many…

A: The given compound is Sr3(PO4)2. We have calculate  number  of P atoms present  in that molecule.…

Q: A mole of carbon has a mass of 12.01 g. and a mole of aluminum has a mass of 26.98 g. • Define what…

A: The mole is the standard unit of measurement for amount of substances. The mole is essentially a…

Q: Calculate the number of grams of AICI3 in 1.25 miles of AICI3.

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Q: Data Set (all ±0.001g) Mass Mass ID Mass of Mg| ribbon /g Trial crucible + crucible + lid + lid /g…

A: The question is based on the determination of composition of the product obtained. systematically,…

Q: A chemist weighed out 66.4 g of beryllium. Calculate the number of moles of beryllium she weighed…

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Q: What is the percentage of oxygen in a 500 g sample of potassium sulfate? Report your answer to the…

A:

Q: e number of oxygen atoms

A:

Q: A student in your class states that 9 molecules of water is the same quantity a 9 moles of water. O…

A: Number of molecules = Number of moles x Avogadro number Avogadro number = 6.0224 x 1023

Q: How many grams of ammonia (NH3) will be required to produce this amount of nitrogen?

A: Balanced equation:                      2NH3 - 3H2 + N2 Moles of N2= 22.53g/28gmol-1=0.8046mol

Q: How many grams of zinc will contain the same number of atoms as 24.6 g of copper? Express your…

A: Given weight = 24.6 g of copper

Q: on is 1.00 g/mL. The molar mass of LizPO, is 115.79 g/mol and the molar mass of H20 is 18.02 g/mol.…

A:

Q: Magnesium, Mg, reacts with sulfuric acid, H2SO4, according to the following chemical reaction. How…

A: A mole is defined as 6.02214076 × 1023 of some chemical unit, be it atoms, molecules, ions, or…

Q: What is the mass of calcium (in grams) that can be recovered?

A: moles of Ca5OH(PO4)3(s) obtained at the end of the reaction = 0.06 mmol * 10-3 mol1 mmol= 6.00*10-5…

Q: How many carbon atoms are present in 5.98 moles of carbon atoms? Give your answer in scientific…

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Q: How do I do this problem??? Consider 80.0-g samples of two different compounds consisting of only…

A: Given,Mass of the sample = 80.0gMass of the Carbon in compound 1= 21.8 gMass of the Carbon in…

Q: A student needs to conduct a reaction that combines chemicals A and B to synthesize product AB. If…

A: Given: 100 molecules of A combine with 100 molecules of B to form 100 AB A + B → AB

Q: How many carbon atoms are present in 3.95 moles of carbon atoms? Give your answer in scientific…

A:

Q: 4) A 1990 penny has a mass of 2.545 g and produces a copper shell with a mass of 0.064 g. Refer to…

A: Given,  Mass of penny = 2.545 g Mass of copper shell produced = 0.064 g Pennies up to 1981 were made…

Q: Find the mass of 1 molecule of NO in gram.

A: Given :- number of molecules of NO = 1 molecule  To calculate :- mass (in g)    molar mass of NO =…

Q: Calculate the number of atoms in 95.3 μg of scandium. Enter your answer in scientific notation.

A: Given,  95.3 μg of scandium

Q: le and the number of particles in the sample.

A: Avogadro number is a constant quantity for any substance. This number is 6.022 • 10^23  According to…

Q: - Part A If Avogadro's number of pennies is divided equally among the 276 million men, women, and…

A: We know that, Avogadro's number of pennies = 6.022 x 1023 pennies. Convert these pennies into…

Q: Find the mass of 1 molecule of HF  in gram.

A: 1 mole = 6.022×1023 [ Avogadro number ] The mass of 1 mole of molecules of a substance is called its…

Q: Calculate the number of phosphorus atoms in a 130.0 g sample of diphosphorus pentoxide (P,05). Be…

A: Diphosphorus pentoxide (P2O5) is an oxide of phosphorous that has 2 atoms of phosphorous and 5 atoms…

Q: Calculate the mass of 3.83 moles of barium. Your answer should be rounded to significant figures and…

A: We know, The formula for the number of moles ---- Number of moles (n) = Mass of the substance(g)…

Q: What is the mass of 1 carbon atom in grams?  What is the mass of one dozen carbon atoms in grams?…

A: The number of moles can be calculated as- n=mMm=n×M where n: number of moles of the atom m: the mass…

Q: What mass of barium bromate, Ba

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Q: e mass of this piece of magnesium

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Q: A sample of a compound is found to contain 21.82 g of carbon, 9.16 g of hydrogen, 20.42 g of oxygen,…

A: Mass of compound is,

Q: If an experiment theoretically yields 4.65 grams of X but actually yields 7.54 grams of X, what is…

A: While performing experiments including synthesis, Percentage yield helps to calculate and compare…

Q: The mole is a really helpful way to count really small things. Are there other methods we use to…

A: Answer is explained below.

Q: sample of Ammonia gas ( NH3) has a mass of 76 grams. How many molecules are in the sample.?

A: Given mass of Ammonia is 76 grams  molar mass of NH3 = 17.031 number of moles= mass / molar mass =…

Q: In lab, a student weighed out 0.407 grams of unknown in a beaker. The student added 49mL DI water…

A: First of all we need to calculate the weight of the barium chloride dihydrate are there in the…

Q: How do you determine the starting mass before an experiment when given the collected mass of…

A: A chemical reaction refers to the process in which one or more substances also known as the…

Q: Find the % mass for NH3 and CU in the compound. Please help!

A: NH3 + HCl ---> NH4Cl moles of NH3 present = moles of HCl used…

Q: What is the mass of 22.8 moles of copper atoms? Round your answer to the nearest hundredth. Be sure…

A: Given : Moles of copper = 22.8 mol Atomic mass of Cu = 63.546 g/mol

Q: You have 15.31 g of an unknown compound. Through analysis, you have determined that this sample…

A: Mass percent can be calculated as follows:

Q: 3. Nitrogen, when combined with oxygen, can form various oxides. 3.5 g of nitrogen gas is burned in…

A: From (b) and (c) : % of nitrogen by mass = 30.43%% of oxygen by mass =69.57% The molar mass of O is…

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg;(Si,Og),(OH), An…

A:

Q: You have a 136.28 g sample of Beryllium Fluoride what is the mass of a. Beryllium in the sample:

A: The mass of Beryllium Fluoride is = 136.28 g The mass of Beryllium in the sample is =?

Q: C MOLE AND MASS RATIO P

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Q: Compare and contrast the following terms: “a mole” (as it is used in chemistry) and “a dozen” Give…

A: Mole is the quantity equal to 6.022×1023 which means 1 mole of something  means 6.022×1023 particles…

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".