The hydrogen atoms in 45 g of a sample of ammonium oxalate( NH4)2C2O4 are:Single choice.

Q: Change 1.25 x 10^25 atoms of yttrium into moles of yttrium

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Q: A measurement using a geiger counter on an carbon-based artifact gave 11.1 disintegrations of C- 14…

A: For radioactive decay, the rate at which a radioactive substance decays follows a first-order…

Q: (a) H2 _?_ x1025 H atoms  (b) Ca(NO3)2 _?_ x1023 Ca2+ ions  _?_ x1024 NO3- ions  (c) N2O2 _?_ x 1024…

A: The mole is actually contains Avogadro’s number of particles in elements or compounds. Avogadro’s…

Q: Determine the number of hydrogen atoms in 2.50 mol of glucose, C6H12O6.  options:   12.0   none of…

A: Given  Number of mole of Glucose = 2.5 mole  Number of Hydrogen atom = ? 1 mole = Avogadro's…

Q: Which of the following setups would you use to obtain the number of O atoms in 86.8g of Cr(NO3)3?

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Q: Some brands of salami contain 0.090% sodium benzoate (NaC2H3O2) by mass as a preservative. If you…

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Q: Researchers obtained the following data from experiments to find the molecular formula of…

A: In order to find the formula of benzocaine we first write down the given data: Mass of the sample=…

Q: 32. How many grams of Li;N can be formed from 1.75 moles of Li? Assume an excess of nitrogen. 6…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: 12) How many grams of hydrogen are in 22.9 g of C6H12O6?

A: Given information,     Mass of glucose is 22.9 g. There are six moles (or 12 atoms) of hydrogen in…

Q: 1. Three elements in Group 8A of the periodic table are called noble gases: helium, neon, and argon.…

A: 1. The term Nobel refers to unreactive nature of the inert gas. Nobel itself means honest , in…

Q: How much would 2.4 x 1024 molecules of N2O5 weigh?

A: Moles=2.4*10^24/(6.022*10^23) = 4

Q: natural product has the molecular formula C25H34O4. What is the mass of 3.31×108 molecules of this…

A: Molecular weight of the compound is  =(12×25)+(34×1)+(16×4) =398 g/mol Where Atomic mass of C ,H And…

Q: What are the molecular and empirical chemical formulas of a compound made up of these molecules? The…

A: Molecular formula of the compound is defined as the actual number of all the atoms present in a…

Q: CH4 (g) + 202 (g) C02 (g) + 2H20(g) Suppose 8.00 g of CH4 is allowed to burn in the presence of…

A: Given information: 8.00 g of CH4  16.00 g of oxygen The reaction is given as follows: CH4 (g) +…

Q: Calculate the mass of 8.4 x 1 0 24 molecules of carbon dioxide (dry ice) (Hint: first calculate the…

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Q: If an air conditioning unit is charged with 4.9 x 1023 molecules of R-113 (C5Cl3F6), what mass of…

A: Given : Number of molecules of C5Cl3F6 = 4.9 X 1023

Q: The total number of atoms in Ca(OH)2

A: Ca(OH)2 is a base and its name is Calcium hydroxide. Atom is the smallest entity of any element and…

Q: 6) 0.025 MOL OF AN IONIC COMPOUND AlaSp CONTAINS o.05 MOL CATIONS AND 4.5x1022 anions. Given: molar…

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Q: What is the mass percent of fluorine in C₂Cl4F₂? 11.78% 5.893% 9.323% 18.65% 69.58%

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Q: A sample of C₂ H² has 1.76 × 10²4 H atoms. How many carbon atoms does the sample contain?

A: In a molecule of C3H8, the mole ratio of carbon to hydrogen is 3:8.Number of moles of a substance…

Q: How many H atoms are there in (3.80x10^2) grams of H2O?

A: Number of moles = Mass/Molar mass Number of atoms in 1 mole = 6.0224 x 1023 Molar mass of water =…

Q: 4) Ozone, O3, is a product in automobile exhaust by the equation NO2(g) + O2(g) → NO(g) + O3(9).…

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: 4.52 moles of C5H12 are burned during an experiment.  How many grams of water are produced?

A: Pentane reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical…

Q: MgSO, zH2O, is heated to 250 °C, all the water of hydration is lost. OH Heatinga MgSO, remains. How…

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Q: How many moles of hydrogen would be found in 1.5 moles of (NH4)2SO4 ?

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Q: About how many MOLES of aluminum are present in 152.89 grams of Al2O3?

A: Moles of a compound=given mass of the compoundmolar mass of the compoundMolar mass of Al2O3 is…

Q: What mass of oxygen would be required to convert 4.00 g of sulfur into sulfur trioxide (SO3)?

A: Given, amount of sulfur =4.00 gramwe are asked to calculate the mass of oxygen would be required…

Q: How many moles of CCL4 are present in 7.65 X 1045 molecules of the compound? W mass of this amount…

A: Given: The number of molecules of CCl4 is 7.65×1045. The number of moles and mass of CCl4 is to be…

Q: 11) What is the mass of 2.25 moles of the Zn(CIO3)2 molecule?

A: Number of moles = Mass / molar mass

Q: Which of these elements is most reactive? -- I F Br Cl

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Q: How many H2O molecules are there in a snowflake weighing 1 mg?

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Q: 10) What is the mass in grams of 0.852 moles of ferric oxide (Fe,O,) ? A) 136 g B) 17 g C) 5.34 x…

A: Number of moles = 0.852 mol

Q: A15   Calculate the percentage by mass of nitrogen in Ba(NO3)2.

A: We have given the compound Ba(NO3)2.We have to calculate percentage by mass of nitrogen in Ba(NO3)2.…

Q: Boron consists mainly of 19.9% boron-10 and 80.1% boron-11. What is the average atomic mass (amu) of…

A: The average Atomic Mass of Boron is given by -

Q: Uranium (VI) fluoride (UFe) can be used for the enrichment uranium. What is the elemental…

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Q: Researchers obtain the following data from experiments to find the molecular formula of benzocaine,…

A: Given: The amount of carbon dioxide (CO2) and water (H2O) formed by the complete combustion of 3.54…

Q: You have a container with a mass of 559 grams of Clorox disinfection wipes, that contain by mass…

A: First we are Calculate mass of substance using total mass and mass percent .  Then using molar mass…

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".