100.0 mL of 3.00% hydrogen peroxide decomposed with yeast as a source of catalyst. Oxygen was collected in the amount of 0.985 L at standard atmospheric pressure and 20oC. what was the percent yield of this procedure? (A)   47%                    (B)       93%                 (C)    102%                 (D)    71% (E)   None of the above. If so, what iis your answer?

Q: When chromium metal is added to nitric acid, the following reaction takes place Cr (s) + 6 HNO, (aq)…

A: From given  Mass = 37.5g Temperature= 40°C  Pressure= 55.3 torr  Volume =?  We are calculating…

Q: What is the total volume of gaseous products, measured at 350°C and 759 torr, when an automobile…

A: (a) Mass of C8H18 = 81.7 g Molar mass of C8H18 = 114.224 g/mol Moles of C8H18 =MassMolar mass=81.7…

Q: 2NaOH(s) + CO2(g) => Na2CO3(s) + H2O(g)

A: At STP :- 1 mol of gass is equal to 22.4 L  Number of moles = mass / molar mass

Q: what is the number of mole of co2 produced when .0200 mol c2h2 burns?

A: A chemical equation can be represented by using symbols and formulas of the participating species.…

Q: eudiometer was 4.22 cm above the outside water level in the beaker. futuro (a) Write a balanced…

A: Given that -  Potassium chlorate , KClO3  decomposed into oxygen gas, O2 and potassium chloride ,…

Q: The chemical reaction from two chemicals resulted in a waste product which is composed of an oxygen…

A:

Q: 1.. (8) СаСО:(s) CaO(s) + CO2(g) -> Calculate the volume of CO2 released at 745 mmHg and 77°C, when…

A: Chemical reactions are those reactions which undergo any chemical change. Chemical reaction is…

Q: The density of air under normal conditions (temperature To-273 K, pressure po- 100 kPa) is 1.29 kg/…

A: The number of moles is a ratio of the mass of a substance to the molar mass of the substance.…

Q: 3. A small percentage of nitrogen gas and oxygen gas in the air will combine (at high temperatures…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: ) (a) What is the volume of one mole of hydrogen gas at 273 K and 760 torr? (b) What is the volume…

A: Temperature = T = 273 KPressure = 760 torrNo of moles of gas (Nitrogen) = 1Volume = to be determined…

Q: The annual production of HNO3 in 2013 was 60 million metric tons Most of that was prepared by the…

A: Given : The reaction equations given in the question are as follows: (a) 4NH3(g) + 5O2(g) ⟶ 4NO(g) +…

Q: Helloooo, please help. What is the cost per kilogram of Na if the complete cost to produce 123…

A:

Q: For the reaction 14/6 C ⟶ 14/7 N + ?, if 100.0 g of carbon reacts, what volume of nitrogen gas (N2)…

A: The equation connecting the temperature, pressure, volume, and number of moles of an ideal gas is…

Q: 2.1130 grams of an unknown liquid compound was found to occupy 305 mL at 757 torr and 100ºC. (a)…

A:

Q: (Q26) A 200 mL container holds 135 mg of neon and an unknown amount of argon at 36.3 °C and a total…

A:

Q: If 160 mL of wet H₂ is collected over water at 24 °C and a barometric pressure of 739 torr, how many…

A: Answer: This question is based on ideal gas equation which is shown below: PV=nRT   Here: P=pressure…

Q: In the lab, students generated and collected hydrogen gas according to the following equation:…

A: A) The reaction of Zn with H2SO4 is  Zn + H2SO4 --------> Zn2SO4 + H2  Hence we can see that 1…

Q: "Nitric acid reacts with S to give H2SO4 and nitrogen monoxide. 30 ml of acid at 25% by mass and a…

A: Answer:The reactant that exhaust first in the chemical reaction and decides the yield of product is…

Q: 1. Based on the following equation: 6HCl(aq) + 2Al(s) → 2AlCl3(aq) + 3H2(g) What mass of aluminum is…

A:

Q: In 2021, 7.5 x 1014 mol = 750,000,000,000,000 mol of CO2 into the atmosphere worldwide. At standard…

A: Given: Pressure = 1 atm. Temperature = 273.15 K And moles of CO2 = 7.5 × 1014 mol.

Q: 00 96 96 %24 # m Be sure to answer all parts. How many liters does each of the following quantities…

A: One mole of  any gas occupies 22.4 L of volume at S.T.P conditions.

Q: An unknown compound (A) is decomposed according to the reaction given below. One of the gas…

A: Given: The final volume of the gas sample is 1565 mL. The pressure is 765 torr. The temperature is…

Q: 1. A student following the procedure described in this module collected the following data: mass…

A: Answer :-  a) The value of the gas law constant (R) is 0.0822 L.atm/mol.K  b) The volume of hydrogen…

Q: A sample of 3.10 mol of helium is confined at low pressure in a volume at a temperature of 80 °C.…

A: Given , moles of helium in sample = 3.10 mol Temperature , T = 80°C

Q: Calculate the molar mass for Hydrogen gas using the formula PV/RT where P=718.9 V= 36.0 R=0.821 T=…

A: Ideal Gas Equation is : PV = nRT where,  P = Pressure of the gas V = Volume of the gas R = Universal…

Q: Calculate the density of oxygen, O2, under each of the following conditions: • STP • 1.00 atm and…

A:

Q: What is the volume of 4.55 x 1025 molecules of C4Hs at STP (Standard Temperature Pressure)?

A: Given T = 273 K , P = 1atm n= no of moles  = ( 4.55 x 1025 ) / 6.023 x 1023 = 75.54 moles

Q: Sodium hydroxide in the amount of 10.0 g is allowed to react with 1.12 L of carbon dioxide gas at…

A: Given data,Mass of NaOH=10.0gVolume of CO2=1.12L

Q: What is the percent yield when 0.0506 mole of H2O2 decomposes and experimentally produces 375 mL of…

A:

Q: A sample of 0.0600 g magnesium metal reacted with excess 6.0 M H2SO4 The following data was obtained…

A: The expression of ideal gas equation is shown below: PV = nRT Where; P = pressure V = volume n =…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.