Discussion about: Nuclear Energy

There are different public opinions about using nuclear energy in producing electrical energy. Nuclear reactors are associated with harmful nuclear radiation and there is a problem of the storage of the nuclear waste. Discuss this issue from a scientific point of view giving your stand and explain why.

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What is the relationship between photons of increasing wavelenght and frequency?

What is the relationship between photons of increasing frequency and energy?

wha is the relatioshi between photons of increasin energy and wavelength?

1. An equilibrium mixture from the following reaction was found to contain 0.225 mol/L of SM , 0.306mol/L of SR, and 0.306 mol/L of HM. If the volume of the reaction vessel was suddenly doubled while the temperature remained constant, what would be the new equilibrium concentrations? (NOTE: SM_(g) + SR _(g) ⇌ HM_(g))

The compound P₄S₃ is used in matches. It reacts with oxygen to produce P₄O₁₀ and SO₂. The unbalanced chemical equation is shown below:

P₄S₃(s) + O₂(g) --> P₄O₁₀(s) + SO₂(g)

What mass of SO₂ is produced from the combustion of 0.401 g P₄S₃?

100 mL of buffer solution that is 0.15M HA (K_a= 6.8x10^-5) and 0.20M NaA is mixed with 15.2mL of 0.35M NaOH. What is the pH of the resulting solution?

for question 3 im getting 96.234 sec but it says its wrong but close to the answer.
for activation energy.. i get 24.6 kj/mol but its wrong

3) You mix together in the proper manner the following VOLUMES:
0.0100 M Potassium iodide...14.7 mL
0.0010 M Sodium thiosulfate...5.6 mL
Distilled water...22.7 mL
0.0400 M Potassium Bromate...11.7 mL
0.100 M Hydrochloric acid...5.6 mL
Using the rate constant and rate equation from problem 2),
exponent c is 1.92
exponent constant K 4.7125
CALCULATE the time to turn blue...__________________ sec (c)

4) A plot of log Rate vs 1/T gives a best straight line which goes through....
1/T = 0.00300, log rate = -4.46
and 1/T = 0.00352, log rate = -6.00.
CALCULATE:

The Slope of the line...is ________-2961.53_____ (d)

The Activation Energy (Ea) (Kj/mol)...________________(e)
thanks in advance

How much heat energy is required to convert 53.0 g of solid ethanol at -114.5 °C to gasesous ethanol at 141.8 °C? The molar heat of fusion of ethanol is 4.60 kJ/mol and its molar heat of vaporization is 38.56 kJ/mol. Ethanol has a normal melting point of -114.5 °C and a normal boiling point of 78.4 °C. The specific heat capacity of liquid ethanol is 2.45 J/g·°C and that of gaseous ethanol is 1.43 J/g·°C.

The rate constant of the elementary reaction 2HI(g) H2(g) +I2(g) is k = 1.97 L mol-1 s-1 at 604°C, and the reaction has an activation energy of 206 kJ mol-1.

(a) Compute the rate constant of the reaction at a temperature of 767°C. L mol-1 s-1

(b) At a temperature of 604°C, 177 s is required for half of the HI originally present to be consumed. How long will it take to consume half of the reactant if an identical experiment is performed at 767°C?

Calculate the freezing point and boiling point of a solution containing 7.90 g g of ethylene glycol (C2H6O2) in 92.7 mL of ethanol. Ethanol has a density of 0.789 g/cm3

Calculate the freezing point of the solution.Express the answer using four significant figures.

Calculate the boiling point of the solution.Calculate your answer using three significant figures.

if 92.8 grams of sodium nitrite are dissolved in 2.3L of water, the resulting solution has a molarity of

1. The experimental empirical formula of a magnesium oxide compound was determined. To do this a magnesium ribbon weighing 0.252 g was heated in a crucible. From the data listed, determine the empirical formula for the magnesium oxide product. Please show all work! I'm trying to really understand

          Mass of empty crucible and cover: 20.74 g

          Mass of crucible, cover, and final product: 21.17 g

Hand draw the following transformations step by step, including all intermediates. Ideally, also show electron pushing

A. Conversion of asparagine to aspartic and isoaspartic acid in peptides.
B. Conversion of aspartic acid to isoaspartic acid in peptides.
C. Cleavage of the peptide backbone at the aspartic acid residue.
D. Discuss whether acid may catalyze each reaction (A, B or C); i.e., whether the reaction is faster at (pH lower than 7) than at pH 7.

E. Discuss whether base may catalyze each reaction (A, B or C); i.e., whether the reaction is faster at (pH higher than 7) than at pH 7.