09/18/22

What is the frequency of a photon of light with an energy of 8.14 x10^-17 J?
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09/18/22

Complete the balanced molecular chemical equation for the reaction below. include the proper phases for all species within the reaction. CsCl(aq) + K₃PO₄(aq) →
If no reaction occurs, write NR after the reaction arrow.
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09/18/22

Complete the balanced molecular chemical equation for the reaction below.after the reaction arrow. include the proper phases for all species within the reaction. Na₂CO₃(aq) + CsC₂H₃O₂(aq) →
If no reaction Say NR
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09/18/22

Write the balanced COMPLETE ionic equation for the reaction when aluminum nitrate and sodium hydroxide are mixed in aqueous solution. If no reaction occurs, simply write only NR.
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09/18/22

What gas law should I use to solve the following problems?
A 6.53g of solid CO2 is put in an empty sealed 7.00 L container at a temperature of 310 K. When all the solid CO2 becomes gas, what will be the pressure in the container? A cylinder... more
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09/18/22

In regards to difference, mean and deviation.
So my question asks that if any of my individual results from the mean differ by more than 3 times the standard deviation I have to reject that number and calculate a new mean. (Underlined texts I... more
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09/17/22

SO2Cl2 (g) → SO2 (g) + Cl2 (g)
Sulfuroyl chloride (SO2Cl2) decomposes with a first order reaction with a rate constant of 0.0450/s at 660. K. If we start with a concentration of SO2Cl2 of 0.0200 M in 4.00 L container, how many... more
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09/17/22

Gaseous iodine (I2 (g)) dissociates into iodine atoms at 625 K with a rate constant of 0.271 s-1.
If you start with 0.0560 M I2, what is the initial pressure of I2 at 625 K?
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09/17/22

A 4.10 lb sample of the mineral luberoite has 65.3% gold. How many meters of gold wire with diameter of 0.0620 in can be produced from this sample? Density of gold 19.3 g/cm3.
Recall: V(cylinder) = π*r2*h and 1lb=454g.Answer Choices:8.13 m82.1 m209. m32.5 m (Correct answer)3250 m
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09/17/22

Nickel coin has density 8.91 g/cm3. How much nickel is contained in a nickel coin that is 8.33% (by weight) of nickel? Recall that a nickel coin has a diameter of 21.21 mm and a thickness of 1.95 mm.
Answer Choices : 511. g 2.04 g73.7 g0.511 g (Correct answer) 0.00644 g
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09/17/22

How much energy (in calories) is required to raise 2.000kg water from 35.00C to 71.000 C. (specific heat of water 1.0000cal/gC
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09/17/22

7500. mg of a metal absorbs 18.7cal as it is heated from 33 to 99C. What is the specific heat in cal/goC Answer in appropriate amount of significant figures.
7500. mg of a metal absorbs 18.7cal as it is heated from 33 to 99C.  What is the specific heat in cal/goC  Answer in appropriate amount of significant figures.
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09/17/22

Compound Formulas
A 4.561-gram sample of an organic compound containing C, H  and O is analyzed by combustion analysis and 10.37 grams of CO2 and 4.246 grams of H2O are produced.In a separate experiment, the molar... more
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09/17/22

compound formulas
When 5.825 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 18.28 grams of CO2 and 7.484 grams of H2O were produced.In a separate experiment, the molar mass of the... more
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09/17/22

Solving moles-to-moles limiting reactant problems
Methane CH4 gas and oxygen O2 gas react to form carbon dioxide CO2 gas and water H2O vapor. Suppose you have 7.0 mol of CH4 and 1.0 mol of O2 in a reactor.Calculate the largest amount of CO2that... more
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09/16/22

The rate constant for this first‑order reaction is 0.770 s−1 at 400 ∘C.
The rate constant for this first‑order reaction is 0.770 s−1 at 400 ∘C.A⟶productsHow long, in seconds, would it take for the concentration of A to decrease from 0.600 M to 0.250 M?
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09/16/22

Do you think that glycerol can be detected in all fats? Why?
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09/16/22

Using the data in the table, determine the rate constant of the reaction and select the appropriate units.
Using the data in the table, determine the rate constant of the reaction and select the appropriate units.A+2B⟶C+D Trial[𝐀] (𝐌) [𝐁] (𝐌) Rate... more
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09/16/22

Using the data in the table, determine the rate constant of the reaction and select the appropriate units.
A+2B⟶C+D Trial[𝐀] (𝐌) [𝐁] (𝐌) Rate (M/s) 1 0.360 0.360 0.0224 2 0.360 0.720 0.0224 3 0.720 0.360 0.0896 𝑘= units of k
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09/16/22

Initial‑rate data at a certain temperature
Initial‑rate data at a certain temperature is given in the table for the reaction N2O3(g)⟶NO(g)+NO2(g) [𝐍2𝐎3]0(𝐌) initial... more
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09/16/22

How many joules of heat are required to heat 35.1 g of isopropyl alcohol from the prevailing room temperature,21.2 degrees Celsius, to its boiling point, 82.4 degrees Celsius?

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09/16/22

Compound Formulas
When 7.370 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 21.57 grams of CO2 and 13.25 grams of H2O were produced.In a separate experiment, the molar mass of the... more
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09/15/22

Chemistry OWLV2
An aqueous solution of 11.10 g of catalase, an enzyme found in the liver, has a volume of 1.00 L at 27°C. The solution's osmotic pressure at 27°C isfound to be 0.827 torr. Calculate the molar mass... more
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09/15/22

Chemistry OWLV2
The vapor pressure of a solution containing 36.3 g glycerin (CHgO3) in 118.4 g ethanol (C,H,OH) is 138 torr at 44°C. Calculate the vapor pressure of pure ethanol at 44°C assuming that glycerin is a... more
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09/15/22

Chemistry OWLV2
An aqueous antifreeze solution is 22.0% ethylene glycol (CH;02) by mass. The density of the solution is 1.05g/cm°. Calculate the molality, molarity, and mole fraction of the ethylene glycol
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