02/23/21

Rank the measurements in order from smallest to largest

1.0 x 10^-5 m 2.0 x 10^-6 m3.0 x 10^-7 m 4.0 x 10^3 mm1.0m
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02/23/21

need chem answer

A 5.4 L solution of potassium nitrate is diluted from its original concentration of 4.8 M to a new concentration of 0.78 M. What is the resulting volume of the diluted solution in liters.
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02/23/21

How many liters of NH3 will be produced?
In producing ammonia (N2 + 3 H2 -> 2 NH3), 5.4 L of N2 react with 14.2 L of H2. How many liters of NH3 will be produced? a) First find out which one—N2 or H2 is the limiting reactant. ... more
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02/23/21

Copper (II) phosphate reacts with sulfuric acid to produce copper (II) sulfate and phosphoric acid
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02/22/21

Calculate the molar enthalpy change for the reaction below.
Use the following information to answer the next question. Ba(NO3)2 is a barium compound that is highly soluble in water. When it is added to a solution of sodium hydroxide, a precipitate... more
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02/22/21

Charles laww helpp plzz

1) A sample of gas occupies 6.74 L at 325oC, what will its volume be at 25.0oC if the pressure does not change?2) A balloon is inflated at room temperature of 22.0oC and has a volume of 3.86 L. ... more
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02/22/21

When the reaction was carried out in the lab, 944.5 grams potassium chloride reacted with 655.3 grams of oxygen gas. How many grams of the excess reactant are present after the reaction has stopped?
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02/22/21

Chemistry help Calculate the rate of Ar gas, knowing that Xenon gas effuses at a rate of 48m/s. (Hint: both Ar and Xe are in group 18 of the periodic table)
Calculate the rate of Ar gas, knowing that Xenon gas effuses at arate of 48m/s. (Hint: both Ar and Xe are in group 18 of the periodic table)
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02/22/21

How many moles of lactid acid (c3h6o3) are causing you pain?
One of the thinga that we should do to fight the virus is to have some exercises, during exercises, lactid acid (c3h6o3) forms in the muscle causing muscle cramp. If 5.0g of lactid acid (c3h6o3)... more
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02/22/21

During the Pandemic you love to cook sunny side up egg. To your curiosity you want to know how many moles are there in 3.01 x 10²³ molecules of table salt (NaCl) you put on the egg you cooked.
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02/21/21

Help with this thermochemistry problem below?
A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant... more
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02/21/21

Redox titrations

0.500 g of zinc powder was found to reduce an acidified solution of 25.50 mL of 0.200 M AO2+. What is the final oxidation number of metal A?
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02/21/21

Identify the type of reaction 2ZNCO3-----3ZNO + CO2
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02/21/21

We want to calculate the concentrations of all species in a 0.36 M Na2SO3 (sodium sulfite) solution.

We want to calculate the concentrations of all species in a 0.36 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1=1.4×10−2 and Ka2=6.3×10−8. Let's start by... more
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02/20/21

Ea or k from Arrhenius Plot Info
For the gas phase isomerization of cis-2-butene,cis-CH3CH=CHCH3trans-CH3CH=CHCH3the rate constant in s-1 has been determined at several temperatures. When ln k is plotted against the reciprocal of... more
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02/20/21

Ea or k from Arrhenius Plot Info
For the gas phase decomposition of difluoroperoxide,F2O2F2 + O2the rate constant has been determined at several temperatures. When ln k in s-1 is plotted against the reciprocal of the Kelvin... more
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02/20/21

Arrhenius Equation Calculations
The activation energy for the gas phase isomerization of cis-1,2-diphenylethene is 179 kJ.cis-C6H5CH=CHC6H5trans-C6H5CH=CHC6H5The rate constant at 577 K is 3.62×10-4 /s. The rate constant will... more
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02/20/21

Determine how many liters 8.47 g of carbon dioxide gas would occupy at the following conditions. 211 K and 149 kPa
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02/20/21

chem question help

How many milligrams of sodium phosphate are needed to make 0.0893 L of a 2.46 M solution? Supply the answer in scientific notation.Answer value
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02/20/21

chem help please
If you want to make a 0.617 M solution using 7.27 grams of sodium hydroxide, how many milliliters does the solution need to occupy?
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02/20/21

Ammonium (NH3) has Kb = 1.8 x 10–5. What is the pH of a solution that contains the molar ratio of the base-to-conjugate acid: [NH3]/[NH4+] = 1/3
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02/19/21

General Chemistry Question
6. Identify for an atom of 96Mo: element name: _____________ Z, atomic number = ____ A, mass number = ____ number of neutrons = ____ total “+” charge in the nucleus = ____ total number of... more
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02/19/21

Integrated Rate Law
The gas phase decomposition of hydrogen peroxide at 400 °CH2O2(g)H2O(g) + ½ O2(g)is second order in H2O2.In one experiment, when the initial concentration of H2O2 was 8.60×10-2 M, the concentration... more
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02/19/21

chemistry question :)

If you want to make a 0.705 M solution using 3.11 grams of sodium hydroxide, how many milliliters does the solution need to occupy?
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02/19/21

Integrated Rate Law
The decomposition of hydrogen peroxide in dilute sodium hydroxide at 20 °CH2O2(aq)H2O(l) + ½ O2(g)is first order in H2O2.During one experiment it was found that when the initial concentration... more
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