A volume of 56.0 mL of He at STP: How many moles? b. Weight how much? Contains how many molecules? a. с.

Q: 6. How many grams of CoSO, are there in 100.0 g of hydrate? How many moles? What per- centage of the…

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Q: Many are always trying to find alternatives for sugar. Stevia is one such alternative. Its main…

A: Stevioside is a glycoside extracted from stevia plant which is used as a sweetner. It is considered…

Q: How many moles of hydrogen sulfide are contained in a 94.4-g sample of this gas?

A: Given  Mass of Hydrogen Sulphide (H2S) gas = 94.4 gram Number of mole = ?…

Q: how may moles is in 26.8g of water?

A: Molar mass of water = 18.01528 g/mol Given mass of water = 26.8 g No. of mol is given by: No. of…

Q: convert 12.5056g of CuSO4 to moles

A: Moles can be calculated as the amount of solute (in grams) divided by molecular weight. If solute’s…

Q: Which of the following graphs shows the relationship between the number of moles in the sample,n,and…

A: For the different mass of N2 gas, the temperature and the pressure of the N2 gas is given. To draw…

Q: t snowed, it melted and now the temperature is going to dip below freezing, to -2.00 °C overnight.…

A:

Q: 32. How many grams of Limestone (Calcium Carbonate) must be decomposed if 7650 L of Carbon --→…

A: Given that: volume of CO2 = 7650 L molar mass of CaCO3 = 100.0 g/mol To find the mass of limestone?…

Q: How many moles are present in 0.868g of Mg? include units.

A: We have given that  How many moles are present in 0.868g of Mg? include units

Q: What is the percentage composition by atom of water? (Show work)

A: The mass percentage is the ratio of mass of element and mass of compound. The mathematical…

Q: Balance then answer questions. __ ClO2(g) + __ H2(g) ® __ HCl(g) + __ H2O(g)           Calculate…

A: 1 mole = 6.022×1023 ( Avogadro's number)  1 mole of H2 molecules means 6.022×1023 molecules of H2 1…

Q: In chemistry, particles are counted by the: Group of answer choices common term scientific notation…

A: The particles are considered to be the smallest unit of a compound in the chemistry.

Q: Sulfur and oxygen combine to produce sulfur trioxide. i) Write and balance the equation  ii)…

A: Sulfur : S Oxygen : O2  Sulfur trioxide : SO3

Q: How many moles are in 220.0g of NaCl? Round to 2 decimal places.

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: A ballon originally has a volume of 0.750 and 0.0335 moles of helium and then has 0.0560 moles of…

A: Given  Initial volume of He gas , V1 = 0.750 L Initial moles of He gas , n1 = 0.0335 mol Final moles…

Q: 2.4 grams of oxygen (molar mass = 16 grams per mole) would be how many moles?

A: Formula: Number of moles = given mass ÷ molecular mass Given data: mass = 2.4 g  molecular mass (O2)…

Q: v moles a

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Q: A balloon fi lled with helium gas, He(g), develops a leak. If it originally contained 0.20 mol of…

A: Given: V1=3.5Ln1=0.20 moleV2=2.5Ln2=?

Q: How manh stones are in 0.5 mol of stones

A: A mole is the amount of substance that contains 6.023×1023 chemical entities like atoms, molecules,…

Q: ow many L of water (H2O) are produced if  120.0 moles of oxygen (O2 ) is used?

A: Given : Moles of O2 = 120.00

Q: A 5lb bag of sugar weigh 2.270kg. Sugar has a molecular weight of 342g/mole. How many moles are in…

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Q: A chemist needs 3 moles of, O2 gas for a particular experiment. How many liters of O2 should s

A: In chemistry, when chemicals are being used for any kind of reaction, their quantity is measured and…

Q: What would happen to: a) Volume of gas, if number of mole increased? b) Number of moles, if volume…

A: Avogadro rule According to this rule at constant temperature and pressure, the volume of an ideal…

Q: Compare, at the same temperature and pressure, equal volumes of H2 and O2 as to the following: (a)…

A: From the ideal gas equation, PV=nRT where the number of moles is given by , n=PVRT Thus, under…

Q: ams of argon and 4.14 grams of carbon dioxide. Wha

A: A) moles of Ar = ( mass / molar atomic mass ) = ( 4.56g / 39.95 gmol-1 ) = 0.114mol  B) moles of CO2…

Q: If the amount of gas collected had not been corrected for the presence of water vapor, would you…

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Q: Excess HCl reacts with Be to produce 50cm3 of hydrogen gas at 20 °C and 1.08x104 Pa. The equation…

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Q: If I produce 12.3 liters of NH3, how many moles of hydrogen gas reacted?

A: Given data,Volume of NH3=12.3LThe balanced reaction for the preparation of NH3 is given…

Q: if 1.095 g of unknown is found to be 0.00575 moles of solute, what is the molar mass of the unknown.…

A: Given data : Mass of the unknown = 1.095 gms Number of moles = 0.00575 We can apply the formula for…

Q: How    many    molecules    of    Tris    are    present    in    5000    ml of    a    700mM…

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Q: Determine the formula weight of BaSO₄. Provide an answer to two decimal places.

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Q: How many milligrams are in 0.250 mmole Fe,0, (ferric oxide). FW of Fe,0, 159.7 g/mol?

A: 1 mole = 6.022×1023 (Avogadro's number)  The mass of 1 mole of molecules of a substance is known as…

Q: Molar volume is the ratio of Da Actual volume to the number of moles Ob. Number of moles to the…

A: The definition of the molar volume is to be mentioned.

Q: Label the diagram to correctly convert 16.8 L N2 to moles of N2

A: The molar volume of a gas is the volume of one mole of a gas at STP. Amole of any gas occupies 22.4…

Q: Calculate the moolar man of LON remember to give the arewer to 2 dedmal places, and include the…

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Q: What would be the molecular weight of a gas

A: Weight of gas=0.104grams Volume=48.7ml=0.0487litere At STP Temperature=273K Pressure=1atm Molecular…

Q: How many liters of nitrogen gas are produced from 5.2x10 to the 23rd power molecules of NH3 2NH3…

A: we have to  calculate volume of nitrogen gas produced

Q: 02: Fínd the number of mmol of NaBr (FW = 102.89 g/mol) present in 1.2664 g of NaBr.

A: Given values,  Mass of NaBr= 1.2664 g Formula weight = molar mass= 102.89 g/mol And we have formula…

Q: moles

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Q: use 17.89 mL (experimental volume) and 0.00074044 mol H2 (theoretical moles of hydrogen gas) to…

A: Given: Volume of gas = 17.89 = 0.01789 L                                    (Since 1 L = 1000 mL)…

Q: How many grams are in 0.350 molemole of chloroform?

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Q: How many grams of silver chloride will form when 20 mL of 0.10 M sodium chloride reacts with excess…

A: Given,  20 mL of 0.10 M NaCl...

Q: S STOICHIOMETRY we the following: w many grams of CC ess air? 1. Balanced Equatic 2. Molar Mass 3.…

A: Balanced chemical reaction,  A) 2C8H18 + 25O2 ---> 16CO2 + 18H2O B) molar mass =8×12×18×1=114…

Q: ny moles

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Q: Ammonium nitrate (NH4NO3), will decompose explosively to form N2, O2, and H2O, a fact that has been…

A: Mass of ammonium nitrate = 2.6 kg  Mass of nitrogen = ?

Q: how many atoms are in 0.0767 mol K? answer in units of atoms

A: Given, Number of moles of potassium (K) = 0.0767 mol Here we are asked to calculate the number of…

Q: Many computer chips are manufactured from silicon, which occurs in nature as SiO2SiO2. When SiO2SiO2…

A: The theoretical yield (Ty) of a chemical reaction is determined by the complete consumption of the…

Q: For the reaction shown, how many grams of Hg can be produced by the reaction of 18.0 g of HgO?…

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Q: How many moles re? (The vapor

A: Total pressure = 755 mm Hg Vapor pressure of water =23 mm Hg Partial pressure of O2 (PO2) = Total…

Q: For the molecular compound phosphorus triiodide, what would you multiply "molecules of PI3" by to…

A: Answer: 1 mole PI3 =6.02 x 1023 molecules PI3 Molecules of PI31 mole PI36.02 x 1023 molecules PI3

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".