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How does the collision theory account for the dependance of rate on the concentration of the reactants?
Calculate the mass in kg of 1 atom of silver with three significant figures. How many atoms of oxygen are present in 2.43 g of O2 ?
Question: Show how to construct a triangle given the length of one side, the distance from an adjacent vertex to the incenter and the radius of the incircle.
At the same conditions, ice has a density of .917 g/cm^3. How much work is done at these conditions by 1 kg of ice as it melts to liquid water?
Find the augmented matrix for the following system of linear equations:
A sample of water with a mass of 23.31g and an initial temperature of 367.67K loses 8615 Joules. What is the final temperature?
If the sulfuric acid is 95.0% H2SO4 by mass and has a density of 1.84 g/ml, how many kilograms of sodium carbonate must be added to neutralize the acid?
Points M(-1, 8) and N(3, -4) lie on the graph of y = -3x + 5. Which of the following points is collinear with M and N?
What are the boiling point. and freezing point of a 2.47 molal solution of naphthalene in benzene? The boiling point and freezing point are 80.1 C and 5.5 C respectively.
Mario is constructing a square dart board. It will consist of a smaller square centered in a larger square. The smaller square measures 4 inches on each side. The ratio of the area of the smaller sq
The minute hand on a watch is 8 mm long and the hour hand is 4 mm long. Express the square of the distance l² between the tips of the hands in terms of the angle Q between the hands.
What is the freezing point of an cyclohexane solution that boils at 81.27 degrees C? Normal freezing point is 6.5 and the normal boiling point is 80.7 degrees C. Kfp = 20.1 K/m and Kbp = 2.79 K/m.
Solve the following system of linear equations: Which one of the following statements best describes your solution:
Cadaverine, a foul smelling substance produced by the action of bacteria on meat, contains 58.55% C, 13.81% H, and 27.40% N by mass; its molar mass is 102.2 g/mol. What is the empirical and molecula
Question: Mrs. Dean wants to paint her mailbox formed by a prysm mounted by a half cylinder. The cylinder's radius is 10cm and it's height is 24cm, the prysms height is 14cm. Determine the total
Calculate the pressure that must be applied to achieve reverse osmosis of 0.504 M NaCl separated by a semipermeable membrane from a solution that is 0.0020 M in NaCl at 22 deg Celsius.
What is the slope of an Arrhenius plot for the following reaction?
A television camera is 30 ft from the sideline of a basketball court 94 ft long. The camera is located 7ft from the midcourt. Through what angle must it sweep in order to cover all the action of th
Which solution would create the higher osmotic pressure (compared to pure water)- one prepared from 1.0g of NaCl in 10 mL of water or 1.0g of CsBr in 10 mL of water?
A 0.115 M solution of an unknown weak acid (HA) has a pH of 2.57. I determined the acid ionization constant (Ka) for the acid to be: Ka = 2.53 X 10-6. What is the weak acid and what is
Question: You are putting a fence around a rectangle garden whose length is three times its width. you use a total of 80 feet of fencing.
A sample of gas changes from P1,V1 and T1 to P2,V2 and T2 by one path and then back to P1,V1 and T1 by another path.Which of following must be zero for the gas in this cycle? ΔT,ΔP
If the initial concentration of N2 was 0.500 M and the concentration of N2 was 0.450 after 0.100 sec, what is the rate of the reaction?
Calculate the heat released when 2.58 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride.
For a hydrogen atom with its electron in the 3p_z orbital, what is the longest wavelength of light that can ionize the atom?