Hydrogen gas, oxygen gas, and water vapor are collected in eudiometer. The eudiometer contains 0.00206 a of hydrogon 0 0811a of Oxvgon and 0 0151 a of wator vanor The total nressure is

Q: How many moles of SiBr4 are formed?

A: Number of moles = mass/molar mass  Molar mass of Br2 = 159.808 g/mol

Q: A 2.45g sample of strontium completley reacts with oxygen to from 2.89g of strontium oxide. What is…

A: Mass of Sr = 2.45 g  Mass of Strontium oxide = 2.89 g  Mass % =?

Q: a sample of ammonia (NH3) Liberates 5.59 KJOF heat as it solidifies at its meining point Whar is the…

A: Given : Amount of heat liberated = 5.59 KJ And the heat of fusion of ammonia = 5.66 KJ/mol.

Q: Iron ore is impure When is heated withan excess of carbon (coke), metallic iron and carbonmonoxide…

A: Given that: mass of iron ore = 938 kg mass of pure iron = 523 kg To find: mass % of ore in…

Q: Would the calculated percentage of the hydrate in a sample be too high, too low, or unaffected by…

A: The mass of water lost/the original mass of hydrate used is equal to the fraction of water in the…

Q: Solid lithium hydroxide is used in space vehicles to remove the carbon dioxide gas exhaled by…

A:

Q: A chromium containing compound has a formula FexCryO4 and is 28.59% oxygen by mass  Find x and y

A: Given, mass percentage of O in FexCryO4 = 28.59%Molar mass of 4 O in FexCryO4 = 4 × 16 g/mol = 64…

Q: of

A: moles= given mass /molecular mass We have 0.730 mole of CS2 Molecular mass =76.13g/mol Mass of CS2=…

Q: llow mass present before same as the total ma al reaction, mass is

A: Lqws in chemistry are based on evidences but theories in chemistry describe nature of the…

Q: 4NH3(g) + 502(g) 4NO(g) + 6H2O(g) When 8.7 moles of ammonia reacts, determine the mass of water…

A:

Q: When 7.80 mg of a compound containing only carbon and hydrogen was burned completely in 28.3 mg of…

A:

Q: Write the formula for Plumbous Acetate  (enter all subscripts as numbers, for example Al2O3 would be…

A: Formula for plumbous acetate.

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: any grams of sodium azide are mmHg anc

A:

Q: Given : 2NaHCO3-->Na2CO3 +H2CO3  Molar mass NaHCO3 is 84.01g/mol Molar mass of Na2CO3 is…

A:

Q: ny moles of HI will be formed?

A:

Q: A mixture of gases has the following composition by mole: C2- 10% 02-75% N2- 15% What are the…

A:

Q: What is the limiting reactant and what is the maximum mass of xenon produced give 1015 grams of YeF…

A: 2  PF3          +         XeF4     -->      2…

Q: A 3.00 mol sample of CO2 (g) is in a rigid 6.00 L container at 400.°C. What is the mass of the…

A: Moles of a substance is expressed as- Moles = MassMolar mass

Q: How many moles of Fe203 will be produced from 10.0 moles FeS and 20.0 moles of0?

A: 4 moles of FeS reacts with 7 moles of O2 10moles of FeS reacts with 7 x 10/4 = 17.5 moles  so,…

Q: culate how many oxygenatoms

A: Mole concept proposed by Avogadro proposed relations to relate the number of moles with mass, molar…

Q: The volatile liquid ethyl mercaptan, C2H6S, is one of the most odoriferous substances known. It is…

A: The density (d) of a liquid is provided as the ratio of the mass (m) to the volume (V) as follows:…

Q: 2. The air in a flask is to be replaced with He gas in a way similar to how air is replaced in the…

A: Air is homogeneous mixture of many gases. The major component of air is nitrogen gas(78%). The molar…

Q: Acetaminophen has the formula C8H9O2N Calculate the mass, in grams, of a .30 mole sample:…

A: Given data, No. of moles = 30 mol Molecular mass of acetaminophen = 151.163 g/mol To calculate the…

Q: A florist prepares a solution of nitrogen-phosphorus fertil-izer by dissolving 5.66 g of NH₄NO₃ and…

A: Given: Mass of NH4NO3 = 5.66 g Mass of (NH4)3PO4 = 4.42 g And volume of final solution = 20.0 L

Q: The air in a flask is to be replaced with He gas in a way similar to how air is replaced in the…

A: Air is a homogeneous mixture of gases. The major component of air is nitrogen gas(78%). Hence, the…

Q: A 0.652-g sample of a pure strontium halide reacts with ex-cess sulfuric acid, and the solid…

A: Given information,     Mass of strontium halide = 0.652 g     Mass of strontium sulfate = 0.755 g

Q: Which of the major physical laws of chemistry are being tested when you calculate the percent…

A: Percent recovery is calculated by the following formula % recovery = (amount recovered/initial…

Q: What is the molecular mass of this gas?  =______ g/mol?

A: Volume = 530 cm3  Volume = 0.530 L Pressure = 145 kPa 1 kPa = 0.0099 atm 145 kPa =0.0099×145 atm…

Q: 8) How many moles of NO will contain 7.89 × 1020 m

A: One mole of any compound contain Avagadro number of molecules. Avagadro No. (Na) = 6.022 × 1023

Q: Fillm the name and emprical forla of cachionic compound that could be formed rom the tons n ths…

A: a) The ions given are Pb4+ and S2-.

Q: The following diagram represents the collection of elementsformed by a decomposition reaction. (a)…

A: a. The above diagram we can tell the empirical formula would be N atoms are in numbers of three and…

Q: Suppose pairs of ballons are filled with 10.0 grams of the following gases. Which ballon has the…

A: The number of moles of O2 and Ne are calculated as,

Q: What is the Molecule weight of sarin gas?

A: Given -> Sarin gas

Q: 7. A metal (M) forms a compound with the formula Mle. The compound contains 71.00% I by mass. Ident…

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next…

Q: Hi. I am trying to calculate the percent of water in an uknown hydrate. The given data is: mass of…

A: Law of conservation of Mass :- Law of conservation of mass states that mass can neither be created,…

Q: TReview Topics [Rererences Use the References to access important values if needed for this…

A: Moles of compound combusted = mass of compound / molar mass of compound = 10.08 / 62.07 = 0.1624…

Q: According to the following reaction: 4HCI (aq) - 02 (g) → 2H20 (1) + 2C12 (g) What would you…

A: Solution: From the balanced chemical reaction, we can write the stoichiometric coefficient to…

Q: Describe a "mole" used in chemistry. First, define it, then give examples, then why it's so…

A:

Q: What other quantity of matter did Avogadro use to define the mole? O volume O temperature mass O…

A: We know no of moles=mass taken/molecular weight

Q: What volume of 0, gas is produced if _Sr(CIO3)2>_SrCI, + _02

A: Strontium chloride (SrCl2) is a salt of strontium and chloride. Like all compounds of Sr, this also…

Q: ss in grams of CH:OH (MM = 32.04 g/mol) would nee

A: Molality (m) = moles of solute/maas of solvent(kg) Moles = mass/MM       = w/32.04  Mass of solvent=…

Q: Solve this question

A: A chemical reaction involves the conversion of reactant molecule to product molecules.

Q: a 15.79g sample of a hydrate of an iron(ii) sulfate compound was heated, without decomposing the…

A: Since the reduction in mass of the compound is due to the mass of water removed  Hence mass of water…

Q: A sample weighing 6.603 mg produced 2.603 mg of H2O by combustion.Find the wt% H in the sample.

A: Mass of H in 18 g of water = 2 g So, 2.603 mg of water has mass of H =2 x 2.603 18 mg = 0.2892 mg…

Q: The molar mass is the mass of 6.022 x 1023 particles of matter. O True OFalse

A: We know that, Avogadro number =6.022 × 1023 partical/mol so,

Q: How many moles of Pb(SO4)2 are equivalent to 186.7 g of Pb(SO4)2 (Mw. 399.34 g/mol)?

A: Number of moles = mass /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".