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Chemistry

05/02/24

nahco3 na2co3 + co2 + h20

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Chemistry

05/02/24

Mode of decay for unstable nuclides

Predict a likely mode of decay for each unstable nuclide. Write its balanced nuclear reaction. a) Mo-109 b)Ru-90 c) P-27 d) Rn-196

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Chemistry

05/01/24

This question concerns the ideal gas law.

Blimps hold approximately 4960 m3 of helium. Assume the gas is at 17 degrees C and 1.00 atm.a. What mass of helium is contained in the blimp?b. If the blimp were full of hydrogen instead of helium,... more

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Chemistry

05/01/24

My question concerns the ideal gas law.

A 2.000-L tank is found containing gas at 27.0 degrees C and 23.11 atm.a. Determine the number of moles of gas in the tank.b. If the mass of the gas is found to be 133.0 g, confirm which halogen is... more

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Chemistry

05/01/24

This question concerns collecting a gas over water.

A sample of mercury oxide, HgO, is decomposed by heating from pure mercury metal and oxygen gas. A volume of oxygen equaling 355 mL is collected over water at 18*C and 725 Torr total pressure.... more

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Chemistry

05/01/24

This question concerns the stoichiometry of gases.

Carbon monoxide, CO, reacts with oxygen to produce carbon dioxide. How many liters of oxygen are required to react with 5.0 L of CO and how many liters of CO2 are produced by the reaction?

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Chemistry

05/01/24

What mass of copper(II) hydroxide is produced when 11.436g of copper(II) nitrate reacts with Sodium hydroxide? How would you go about working this out? Thanks

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Chemistry

05/01/24

A sample of nickel is to be determined using absorption spectrum analysis.

. A sample of nickel is to be determined using absorption spectrum analysis. A 0.286 g sample of nickel ore is crushed and digested in 1M HNO3. The stock solution is then diluted to 250.0 mL in a... more

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Chemistry

05/01/24

This question concerns temperature, the kinetic theory, and pressure.

State the approximate range of velocities and the mean velocity found in Argon atoms at 25*(degrees)C.

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Chemistry

04/30/24

Rate law chemistry

Given the reaction C2H4 + 3O2 —> 2CO2 + 2H2O and the rate constant k = 3.408 L/(mol x S), what is the rate of production of CO2 when C2H4 = 0.15 M and O2 = 0.08 M?

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Chemistry

04/30/24

This question concerns the stoichiometry of gases.

Scientists are studying the effect of a synthetic atmosphere on plant growth. The components of the synthetic atmosphere are 80.5 mol percent Ar, 18.0 mol percent O2, and 1.5 mol percent C02.a. If... more

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Chemistry

04/30/24

This question concerns the stochiometry of gases

Carbon monoxide, C0, reacts with oxygen to produce carbon dioxide. How many liters of oxygen are required to react with 5.0 L of C, and how many liters of C02 are produced by the reaction?

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Chemistry

04/30/24

This question concerns the gas laws and pressure

A driver fills his tires to 35 psi gauge on a day when the air is 36*C. Over the next few weeks, the temperature drops to -5 degrees C. Determine the new pressure in the tires. Assume the tire... more

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Chemistry

04/30/24

This question concerns the gas law and pressure.

A SCUBA diver tank contains 12.00 L of air at a gauge pressure of 119.0 bar and a temperature of 22.00 degrees C. a. Determine the number of moles of air in the tank.b. Determine the volume this... more

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Chemistry

04/30/24

Equilibrium pressure of BrCl

For the equilibriumBr2+Cl2<−−>2BrClthe equilibrium constant isKp=7.0at4000 K. If the cylinder is charged withBrClat an initial pressure of1.00 atmand the system allowed to come to... more

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Chemistry

04/30/24

Equilibrium pressure of BrCl

For the equilibriumBr2+Cl2<−−>2BrClthe equilibrium constant isKp=7.0at4000 K. If the cylinder is charged withBrClat an initial pressure of1.00 atmand the system allowed to come to... more

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Chemistry

04/29/24

This question concerns stoichiometry and the limiting reactant.

On one of the Apollo lunar missions, N2O4 powered the lunar landing module as it ascended from the surface of the moon. During the ascent, 1.200 times 10^3 kg N2H2, 1.000 times 10^3 kg (CH3)2N2H2,... more

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Chemistry

04/29/24

Calculate Kc for the reaction.

Consider the following equilibrium at 295 K:NH_4HS(s)>>NH_3(g)+H_2S(g)The partial pressure of each gas is 0.265 atm. Calculate Kc for thereaction.

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Chemistry

04/29/24

Arrhenius Equation

The rate constant for the rate of decomposition of 𝑁2𝑂5 to NOand 𝑂2 in the gas phase is 1.66 𝑀−1𝑠−1 at 651 K and 7.39𝑀−1𝑠−1 at 701 K. Calculate the activation energy for thisdecomposition in kJ/mol.

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Chemistry

04/29/24

Half Life of a Reaction

Calculate the number of half lives it takes for asubstance to reach 3.13% of it’s original concentration.Calculate the rate constant for the first-order decompositionof hydrogen peroxide in water... more

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Chemistry

04/29/24

Rate Law Calculations

Under certain conditions the decomposition ofcarbon dioxide follows a zero order reaction. Given aninitial concentration of 0.333 M and k=0.000234 M/s,calculate the final concentration in M after... more

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Chemistry

04/29/24

Instantaneous Rate of Decomposition

Given the decomposition of 𝐻_2𝑂_2: 𝐻_2𝑂_2→ 2 𝐻_2𝑂 + 𝑂_2 the instantaneous rate of decomposition of hydrogen peroxide at t = 10.8 hr is determined to be 1.20 𝑥 10−2 M/hr, that is: -∆ {H_2O_2}/... more

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Chemistry

04/29/24

Unit Cell Calculations

Calculate the density (in Τ𝑔 𝑐𝑚3) of a metal thatcrystallizes in a face centered cubic unit structurewith an edge length of 559 pm and a molar massof 40.078 g/molCalculate the molar mass (in Τ𝑔... more

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Chemistry

04/29/24

Clausius - Clapeyron Equation

At 34.0 °C, the vapor pressure of isooctane is 10.0 kPa, andat 98.8 °C, its vapor pressure is 100.0 kPa. Use thisinformation to calculate the enthalpy of vaporization forisooctane in kJ/mol.

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Chemistry

04/29/24

Please give a definition for each intermolecular force and an example of a molecular compound that would classify for each.

London DispersionDipole-DipoleHydrogen Bonding Ion-dipole

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nahco3 na2co3 + co2 + h20

Mode of decay for unstable nuclides

This question concerns the ideal gas law.

My question concerns the ideal gas law.

This question concerns collecting a gas over water.

This question concerns the stoichiometry of gases.

What mass of copper(II) hydroxide is produced when 11.436g of copper(II) nitrate reacts with Sodium hydroxide? How would you go about working this out? Thanks

A sample of nickel is to be determined using absorption spectrum analysis.

This question concerns temperature, the kinetic theory, and pressure.

Rate law chemistry

This question concerns the stoichiometry of gases.

This question concerns the stochiometry of gases

This question concerns the gas laws and pressure

This question concerns the gas law and pressure.

Equilibrium pressure of BrCl

Equilibrium pressure of BrCl

This question concerns stoichiometry and the limiting reactant.

Calculate Kc for the reaction.

Arrhenius Equation

Half Life of a Reaction

Rate Law Calculations

Instantaneous Rate of Decomposition

Unit Cell Calculations

Clausius - Clapeyron Equation

Please give a definition for each intermolecular force and an example of a molecular compound that would classify for each.

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