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Explain your response to the following completely and in easy to understand language. There is controversy surrounding genetically modified crops. To make informed decisions, scientists must weigh the pros and cons of using this type of biotechnology. Explain why genetically modifying the foods we eat can be both useful and potentially harmful.
Potassium-42 is a radioisotope that nutritionists use to determine whether the body is effectively using potassium at the cellular level. The half-life of potassium-42 is 12.4 hours.
Consider what happens when a sample of the explosive TNT is detonated. (a) Is the detonation a spontaneous process (b) What is the sign of q for this process
how much sodium carbonate kgday is required to precipitate 60 mgl of non-carbonate calcium in a water treatment plant
A child discovered that her coin is missing and there is a hole in her pocket. She turned back and walked 24m east along the sidewalk. Then, she stopped for 18s and decided to head back to school.
what is the amount of heat kj required if 64.0 kg of h2o is heated from 25degc to 85degc? 200.0 g al c 0.900 at
Explain how much work is performed by 1 mole of water freezing to 1 mole of ice at 0 C at standard pressure? Density of ice at 0 C is 0.9168 g/mL Density of water at 0 C is 0.99984 g/mL
The heat capacity of a system is defined as the ratio of the infinitesimal amount of heat absorbed to the corresponding increase in the temperature when some process is carried out. Show that the heat capacity at constant volume is C_V is equal to
an equilibrium mixture of o2 so2 and so3 contains equal concentration of so2 and so3. calculate the concentration of o2
What is the hydronium-ion concentration in a 0.025 M solution of carbonic acid, H2CO3? For carbonic acid,
Calculate Enthalpy of HNCO given that the enthalpy of the following reaction is -221.4 KJ/mol.
For reversible adiabatic expansion of a perfect gas, state if possible whether the following are positive, negative, or equal to zero. State a short explanation for each.
Problem- Two solutions used in atomic absorption measurements with an acetylene/air flame contain equal concentrations of calcium. For each of the conditions given below, indicate which of the two solutions will yield the higher absorbance value a..
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