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Calculate the pressure (in atm) of 16.80 mol of CO2 gas in a 3.00 L vessel at 153 K with: (a) the ideal gas law
The angle of elevation from the top of a house to a jet flying 2 miles above the house is x radians. If d represents the horizontal distance, in miles, of the jet from the house, express d in terms
Nucleophilic substitution reactions: an example of an SN1 and an SN2 including the stereochemical consequences. Mark on your reaction scheme which is SN1 and which is SN2.
Explain how the haloform reaction can be used to distinguish between butan-2-one and propanal. Include a reaction mechanism for any reaction which occurs.
Calculate the pH of a solution prepared by mixing 250. mL of 0.174 m aqueous HF (density = 1.10 g/mL) with 38.7 g of an aqueous solution that is 1.50% NaOH by mass (density = 1.02 g/mL).
Write balanced equations to show how ethyl ethanoate can be made from a) acid halide and b) an acid anhydride.
Question: In a reaction, 34.6 g of chromium(III) oxide reacts with 12.3 g of aluminum to produce chromium and aluminum oxide. If 23.7 g of chromium is produced, what mass of aluminum oxide is produc
The decomposition of dinitrogen pentaoxide has and activation energy of 102 kj/mol and delta H degree rsn = + 55 kj/mol. What is the activation energy for the reverse reaction?
The binding energy for chromium metal is 4.37 eV. What wavelength of radiation must be used to eject electrons with a velocity of 1.05x10^3 km/s?
What is the density of a gas in g/L that has a molecular weight of 144, if the temperature and pressure is 25 degree C and 750 mmHg?
Calculate the pH of a buffer solution which contains 0.25 M benzoic acid (C6H5CO2H) and 0.15 M sodium benzoate (NaC6H5CO2). Given Ka = 6.5 x 10^-5
Question: A 0.1391 g sample of solid magnesium is burned in a constant-volume bomb calorimeter that has a heat capacity of 1769 J/°C. The calorimeter contains exactly 281 g of water, and the tem
Provide reasoning for the observed regioselectivity for addition of each mole of hydrogen bromide.
The vertices of Triangle ABC are the points A(4,-3), B(2,1), and C(-2,4). Find the measure of the largest angle in the triangle to the nearest tenth of a degree.
How do both meiosis and sexual reproduction (fertilization) produce offspring that differ genetically from the parents? Talk about the two specific steps in meiosis that increase variabili
A 1.28m long vertical glass tube is filled with a liquid at 20 degrees celcius. How much will the height of the liquid column change when the tube is hearted to 30 degrees celcius?
Change all trig functions to sines and cosines and simplify. Write the answer using s for sin(x) and c for cos(x). cos (-x)/sec(x) + tan(-x)
What is the significance of the first and last codons of an mRNAtranscript? What meaning do these mRNA codons have for protein synthesis?
Find the terminal point on the unit circle determined by 3π/4. Use exact values.
Find all solutions of the equation. Use a calculator to solve the equation in the interval [0, 2pi].
Give exact values (fractions and square roots) for the fallowing problems. Please show work so i can understand it better(just only 1 for each different sin, cos, etc.)
What percentage of cancer cases in the UK is not due to lifestyle factors? The article states that in women, cases of lung cancer have increased by 15% to 15,675 since 2002. Calculate the number diag
Reproduction via cell division is a universal feature of living cells and multicellular organisms. Describe the processes of reproduction at biochemical, cellular, anatomical and physiological levels
If car one accelerates at 6.00m/s^2 up to maximum speed of 30.0m/s and car 2 accelerates at 5.00m/s^2 up to a maximum speed of 35.0 m/s, how long does it take the cars to meet?
Write equations describing the preparation of three isomeric primary alcohols of molecular formula C5H12O from alkenes.