Q: Calculate the number of atoms in 39.4g gold. Molar mass of gold is 197 g/mole.
A: The formula for the number of moles is:
Q: Why is it necessary to use a small diameter, thin-walled capillary for holding the sample in the…
A: Solution:
Q: How many hydrogen atoms are present in 722.6 g of sucrose (C12H22011)? (Molar mass of carbon =…
A: Avogadro’s law, a statement that under the same conditions of temperature and pressure, equal…
Q: Why is half frozen fruit punch always sweeter than completely melted fruit punch?
A: The sweetness depends on the concentration of the sugar.One of the main constituents of fruit is…
Q: Consider the dissolution of CaCI2: CaCl2(s) Ca (aq) + 2CI (aq) AH = -81.5 kJ/mol A 15.0-g sample of…
A: Given compound is --> CaCl2 Amount of substance = 135 grams Amount of compound = 15 grams Atomic…
Q: The temperature, at which the root mean square velocity of hydrogen molecules equals their escape…
A:
Q: If no molecule in a body can escape, would body have any odor?
A: The odour is due to molecular diffusion, hence if the molecule could escape, the body will have…
Q: Do you find the idea that you are made of recycled atoms disturbing? Why or why not?
A: We are made of atoms that were formed on other starts and distributed across the universe.
Q: The mass of a gas molecule can be computed from its specific heat at constant volume cV. (Note that…
A:
Q: Do 10 grams of oxygen atoms and 10 grams of iron atoms contain the same number of particles?
A:
Q: Two safety pins, identical except that one is latched and one is unlatched, are placed in identical…
A:
Q: Consider air at P = 1.00 atm. The average molecular mass of air is approximately 29 u (atomic unit).…
A:
Q: Hydrogen was collected over water at 21.4°C on a day when the atmospheric pressure was 741 Torr. the…
A:
Q: Calculate the total molecular translational energy at 25°C and 1.0 atm for (a) 1.00 mol of O2; (b)…
A:
Q: Estimate the time needed for a glycine molecule (see Table 13 – 4 in the textbook) to diffuse a…
A:
Q: Nine moles of sulfur dioxide, SO2, would consist of how many molecules?
A: Write the given values of this problem. Moles of sulfur dioxide=9
Q: A substance that heats up relatively quickly has a O low specific heat. many strong molecular…
A:
Q: find the density of air at 0°c and 1.013 x10^5 Pa. One mole of air may be assumed to be 79% nitrogen…
A:
Q: Suppose that the root-mean-square velocity v-ms of water molecules (molecular mass is equal to 18.0…
A:
Q: Consider air at P = 1.00 atm. The average molecular mass of air is approximately 29 u (atomic unit).…
A:
Q: A 5.0-L sample of sulfur hexafluoride (SF6) is stored at a temperature of 250.0 K and a pressure of…
A: Given: In the first case: Volume of the SF6 gas is 5 L. At temperature 250 K. Initial pressure 67…
Q: Why is there a need to constantly stir the metal shots during heating?
A:
Q: Diffusion always drives molecules from higher concentration to lower concentration. Oa. True O b.…
A: The kinetic energy of the molecules results in random motion, causing diffusion. In this random…
Q: Suppose a sample of helium gas at 45.0 °C sealed in a flask at a pressure of 5.63 atm was found to…
A:
Q: How does microwave cooking differ from conventional cooking?
A: Given: micowave cooking and conventional cooking
Q: A simple model for car- bon dioxide consists of
A: from the following relation ω = 2π f and also ω2 = k/m here ω = angular frequency f = linear…
Q: Which contains the most moles: 10.0 gg of hydrogen gas, 100 gg of carbon, or 500 gg of lead?
A: Let M be the mass of the element, Mmol be the molar mass of element.Write the expression for the…
Q: What is the mass of 0.6 mole of CO2 (in g)? A) 31 B) 7 C) 26 D) 18 E) 37
A:
Q: an ideal gas contains 48.18 * 10^23 particles its number of moles is: А. 1 В. З C. 8 D. 2 E. none of…
A:
Q: How many molecules of carbon dioxide are there in 44g of carbon dioxide?
A: Number of molecules
Q: Calculate the time required for molecules to diffuse in a liquid a distance of 10^(−3) cm. Assume…
A: Distance travelled, s= 10-3 cm or 10-5 mmean free path, λ=10-8 cm or 10-10 mavg velocity of…
Q: The specific latent heat of vaporization of a particular liquid is 2.0 x 10 Jkg, its relative…
A: Given : Specific latent heat of vaporization, LVH = 2.0x105J/Kg Relative molecular mass = 30…
Q: At what temperature will 0.654 moles of neon gas occupy 12.30 liters at 1.95 atmospheres? Use the…
A:
Q: A two-component mixture is made up of components A and B with nA=0.11ng. If a small change in…
A: In the given question, We have to calculate the value of change μB.
Q: Methane, CH4, is the simplest hydrocarbon molecule and in its natural state is a gaseous substance.…
A: Mass of methane = 64 g Molecular mass of methane = (12 +4) = 16 g Number of moles of methane =…
Q: How many molecules are in 0.044 kg of carbon dioxide, CO2? (atomic masses: C = 12 u; O = 16 u)
A: ...
Q: true or false ? is Oxygen is an example of matter .
A: Matter is made from atoms. Every substance has a unique number of protons, neutrons, and electrons.…
Q: What is the mass of 0.7 mole of CO2 (in g)? A) 31 B) 7 C) 26 D) 18 E) 37
A:
Q: If no molecules in a body could escape, would the body have any odor?
A:
Q: sample of 1 mol Ar and 1 mol Kr gas is at 298 O the same average kinetic energy O the same rate of…
A: Kinetic theory of gases relates the macroscopic property of the gas, like Temperature, Pressure,…
Q: What is mole?
A: Mole is the unit of amount of substance. It consists of Avogadro number of particles. Avogadro…
Q: Find the density of the air at 0°C and 1.013 x 105 Pa. One mole of air may be assumed to be 79%…
A: Given data: The percentage composition of nitrogen in in one mole of air, %nitrogen=79%. The…
Q: At which temperature could water contain the most dissolved gas at a pressure of 101.3 kPa?
A: For gaseous solutes, The solubility decreases with increase in temperature.
Q: how many joules would be absorbed for the water?
A: Onc Calorie is equal to 4.2 Joules Here water needs 5000 Calories to get heated from 20 degrees…
Q: A technique that separates mixtures on the basis of theirdistribution between a stationary liquid…
A: Answer Chromatography is a laboratory technique for the separation of a mixture. The mixture is…
Is the mass of one mole of N2 greater than, less than, or
equal to the mass of one mole of O2?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- In an engine test the dry volumetric analysis of the products was CO2 0.0527, O2 0.1338 and N2 0.8135. Assume the fuel is a pure hydrocarbon and that it is completely burnt. (a) Write the complete balance chemical equation on volume basis. Estimate: (b) The ratio of carbon to hydrogen in the fuel by mass. (c) The air/fuel ratio by mass. Assume the percentage of nitrogen in air is: 76.7% by mass and 79% by volume (or mole). NOTE: Do not solve this problem in tabulated form, otherwise your answer will be considered totally wrong. EndA) What is an equation to equate KE and GPE? B) A gas is held in a container of 15 m^3 in volume and a pressure of 5 Pa. If the volume isincreased to 26 m^3 what is the pressure of the gas? c)A syringe has a volume of 5 cm^3 and a temperature of 300 k. Upon heating the syringeexpands to a volume is now 5.5cm^3, what is the temperature of the syringe?Problem II There is a piece of 10 mm thick a-iron plate. This plate initially has hydrogen uniformly distributed inside with an initial concentration Co. Assume that there is no hydrogen in the air. The plate is left in the air and the hydrogen concentration varies with the time as follows: 4Co C(x, t) = (-9n²Dt\ 12 3nx sin еxp where / is the thickness of the plate. If we would like to remove 95% of the hydrogen from the plate, how long will it take when the plate is at 25 °C? The pre-exponential and activation energy for hydrogen in a-iron are 0.1 mm/s and 13,400 J/mol, respectively.
- Question: A Coal Sample Gave The Following Analysis By Weight, Carbon 66.9 Per Cent, Hydrogen 6.58 Per Cent, Oxygen 8.77 Per Cent,... A coal sample gave the following analysis by weight, Carbon 66.9 per cent, Hydrogen 6.58 per cent, Oxygen 8.77 per cent, the remainder being incombustible. For 20% excess air , determine actual weight of air required per kg of coal.For which gas the ratio of specific heats (C, / C, ) will be the largest? (a) mono-atomic (b) di-atomic (c) tri-atomic (d) hexa-atomicX 1.CO re to search Combustion and Elemental Anal X Edpuzzle Et X Edpuzzle Aktiv Chemistry Question 27 of 35 ▸ Determine the mass in grams of 5.20 x 1021 atoms of carbon. (The mass of one mole of carbon is 12.01 g.)
- Given a sample of 1cm3 of hydrogen and 1cm3 of oxygen both at NTP. Which sample has large number of molecules?Chromium(III) oxide reacts with hydrogen sulfide (H2S) gas to form chromium(III) sulfide and water: Cr2O3(s) + 3H2S(g)→Cr2S3(s) + 3H2O(l) To produce 681 g ofCr2S3 (a) how many moles ofCr2O3are required? (b) how many grams ofCr2O3are required?4G " 37% 13:39 K STOICHOMETRY.docx Grade 10 and 11 Revision 1. Calculate the molar mass of : (a) Naci (b) K0 (c) H;SO, (d) Ca(OH)2 (e) A:(CO.)3 2. (i) Calculate the number of moles in 96g S (ii) Calculate the mass of 0.5mol of H2SO4 (iii) The mass of 2 mol of an ionic substance is 80g. Calculate the molar mass of the substance 3. NA (iv) How many atoms are there in 4mol of Mg (v) Calculate the no. of particles in 2.3mol NaCl (formula units) (vi) Calculate the no. of particles in 2.6g of SO2 (vii) Calculate the no. of cations in 60g of calcium nitrate Type equation here. Ca(NO3)2 Ca2+ + 2NO3 Q Edit Fit screen Search Save as
- A sample of oxygen gas has a volume of 2.50L at STP. How many grams of O, are present?Calculate AH, AS, and AG at 298 K for the reaction below. Please take note of units. B2H6(g) 2BH3(g) B2H6(g) 2BH3(g) AH 35 (kJ/mol) 110.0 IS 232.0 (J/mol-K) 188.0 AHxn kJ J/mol·K AGrxn kJ 關 %3DShow that (ƏT· V др Cp (%) -1 H
