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How does the environment affect the organism, and vice versa? What effects, good as well as bad, have humans had on the environment?
What volume of 0.50 M HNO2 and 0.50 M NaNO2 must be mixed to prepare 1.00 L of a buffered solution at a pH of 3.50? Present answer in mL units and use 4 significant figures.
calculate the mass of a sample of gold that occupies 5.0 X 10^-3 cm3 if the density of gold is 19.3 g/cm
A fifty litres container of stainless steel was charged with 5.00 atm of H2(hydrogen gas) and 6.00 atm of O2(oxygen gas). A spark ignited this mixture (hydrogen gas & oxygen gas)
Acetylene,C2H2 , can be converted to ethane,C2H6 , by a process known as hydrogenation. The reaction is C2H2 + 2H2 --> C2H6 Given the following data, what is the value of K(p) for this reaction?
an aqueous solution of copperii sulfate and an aqueous and an aqueous solution of sodium phosphate are mix together in
Problem- A mixture of three gases has a total pressure of 1380 mmHg at 298 K. The mixture is analyzed and is found to contain 1.27 mol CO 2, 3.04 mol CO, and 1.50 mol Ar. 1) What is the partial pressure of Ar
Programming Essentials - Designing for Reusability Discuss the concept of reusability and how to design for reusability. Provide an example with your posting.
A student carried out a recrystallization and obtained a 105% yield of material with a broad melting point. The material was warmed gently resulting in a recalculated yield of 87% and a sharper melting point. Briefly explain these observations.
RNA Splicing: What is the minimum number of transesterification reactions needed to splice an intron from an mRNA transcript
100 microliters of a solution containing 1 mM magnesium chloride are combined with 10 microliters of a solution containing 10 mM magnesium acetate and diluted to a final volume of 1.5 mL. What is the concentration of magnesium ions in the sample
a helium balloon with a volume of 410 mm is cooled from 48 deg celsius to -37 deg the pressure on the gas is reduced
determine the lime and soda ash dose in mgl as caco3 to soften the following water to a final hardness of less than
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