My daily water/fliud intake is usually 6 cups of water, a cup of lemon juice and a small can of soft drink (cola). How does this compare with recommended values? What factors need to be considered in deciding how much water must be consumed?

What is the frequency of radiation whose wavelength is 5.2×10⁻⁵ m ?

Express your answer using two significant figures.

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Part B

What is the wavelength of radiation that has a frequency of 2.8×10⁸ s−1 ?

Express your answer using two significant figures.

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Part C

Would the radiations with a wavelength 5.2×10⁻⁵ m or a frequency of 2.8×10⁸ s−1 be detected by an X-ray detector?

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Part D

What distance does electromagnetic radiation travel in 10.9 fs ?

Express your answer using three significant figures.

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Calculate the pH of the buffers prepared in the following ways:

A. By mixing 50.00 mL of 0.200 M ammonium nitrate, NH4NO3, with 25.00 mL 0.200 M NaOH

B. By neutralizing half of the acid in 100.00 mL of 0.200 M ammonium nitrate solution with 1.0 M NaOH

C. By mixing 60.00 mL of 0.400 M sodium formate (NaCHOO) with 40.00 mL 0.360 M HCl

D. By mixing 80.00 mL of 1.00 M NH3 with 40.00 mL of 1.00 M HCl

E. By mixing equal volumes of 1.00 M NH3 and 0.50 M HCl

from an analysis of IR spectrum of dimedone , is it possible to determine the keto/enol ratio? How can one do this ? Describe two other methods to distinguish between the keto-and enol-forms in organic chemistry.

The following reaction reaches equilibrium at 350 degree C and 2 bar, with an equilibrium constant K = 3.7064 at these conditions: C H subscript 3 C H O space left parenthesis g right parenthesis space plus space H subscript 2 space left parenthesis g right parenthesis space rightwards arrow space C subscript 2 H subscript 5 O H space left parenthesis g right parenthesis If the system initially contains 1 mol of H2 and 1 mol of acetaldehyde, what is the extent of reaction? Assume ideal gases. Give your answer to 2 decimal places.

Construct a Born-Haber cycle for the formation of the hypothetical compound NaCl2 where the sodium ion has a 2+ charge (the 1st and 2nd ionization energies for sodium are 496 KJ/mol and 4562 KJ/mol respectively).

(a) How large would the lattice energy need to be for the formation of NaCl2 to be exothermic

(b) If we were to estimate the lattice energy of NaCl2 to be roughly equal to that of MgCl2 (2326 KJ/mol), what value would you obtain for the standard enthalpy of formation (delta)H*f(formation), of NaCl2?

Although the d electrons in many transition metal compounds may not be involved directly in bond formation, they nevertheless exert a considerable influence on structure. Explain.

The oxides MnO. FeO, CoO and NiO all have the cubic rock salt structure with octahedral coordination of the cations. The structure of CuO is different and contains grossly distorted CuO₆ octahedra. Explain.

Gaseous ammonia can be injected into the exhaust stream of a coal-burning power plant to reduce the pollutant NO to N2 according to the following reaction: 4NH3(g)+4NO(g)+O2(g)→4N2(g)+6H2O(g) Suppose that the exhaust stream of a power plant has a flow rate of 335 L/s at a temperature of 955 K, and that the exhaust contains a partial pressure of NO of 22.8 torr .What should be the flow rate of ammonia delivered at 750 torr and 298 K into the stream to react completely with the NO if the ammonia is 64.8% pure (by volume)

1. Using your determined value of K_sp, calculate how many milligrams of Ag₂CrO₄ will dissolve in 10.0 mL of H₂O.

K_sp=8.26*10^-11.

2. Use your K_sp and show, by calculation, that Ag₂CrO₄ should precipitate when 5mL of 0.004M AgNO₃ are added to 5mL of 0.0024M K₂CrO₄.

K_sp=8.26*10^-11

Please show work on both.

1. A 100-watt lightbulb radiates energy at a rate of 100 J/s (The watt, a unit of power, or energy over time, is defined as 1 J/s). If all of the light emitted has a wavelength of 505nm, how many photons are emitted per second? (Assume three significant figures in this calculation.)

2.Calculate the de Broglie wavelength of a 143-g baseball traveling at 80 mph .

3.An electron undergoes a transition from an initial (ni) to a final (nf ) energy state. The energies of the ni and nf energy states are −2.179×10⁻¹⁸ J and −8.720×10−20 J, respectively.

Calculate the wavelength (λ) of the light in nanometers (nm) corresponding to the energy change (ΔE) value of this transition. You can use the following values for your calculations:

Planck′s constant (h)speed of light (c)1 m===6.626×10−34 J⋅s2.998×108 m/s109 nm

What are some of the problems associated with mining phosphate rock? I've read toxic elements like cadmium and I believe uranium and selenium are found in phosphate rock deposits, but would like for somebody to confirm this with a credible source I can use in a paper. Also are these toxic elements also found in superphoshpate fertilizers? I am trying to understand the impact phosphate mining and phosphate fertilizers have on the soil and appreciate any sources and/or information relevant to the topic. Thank you    

A mixture containing 2.91 g each of CH₄(g), C₂H₄(g) and C₄H₁₀(g) is contained in a 1.50 L flask at a temperature of 35°C.

(a) Calculate the partial pressure of each of the gases in the mixture.

(b) Calculate the total pressure of the mixture.
___ atm

What was the initial concentration of 100ml of KBr solution, if after adding water to dilute it, 300ml of a 4 percent solution was obtained?