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A car of mass 1250 kg drives around a curve with a speed of 22 m/s.
a. If the radius of the curve is 35 m, what is the centripetal acceleration of the car? (3 points)
b. The maximum friction that the car's tires can apply is 20,000 N. What is the radius of the smallest circle the car can drive in at a speed of 22 m/s? (3 points)
If I add 65 grams of calcium chloride to 500 grams of water, what will the boiling
points be of the resulting solution? Kb = 0.512 Β°C.
The half-lives of different radioisotopes are given in the table.
Radioisotope
argon-44
lead-196
potassium-44
indium-117
Half-life (min)
12
22
43
How long would it take, in minutes, for the amount of indium-117 to decrease from 28.0 mg to 3.50 mg?
A 0.25 moles neon is at 256 mmHg and at temperature of 35Β°C. What is the volume? (1 atm = 760 mmHg)
ππΊπΆπ(π) + πΆπ(π) β ππΊπΆπ(π)
Kc = 6.1 x 104Β at 750K. At equilibriumΒ π·πΊπΆπΒ = π.ππ πππΒ andΒ π·πΆπΒ = π.ππ πππ.
CalculateΒ πΒ at 750 K (3 points).Β Hint be sure to convert Kc to Kp first.Β ππ3
Calculate Kc at 550 K ifΒ Ξππ»πΒ = β197.8 ππ½ πππβ1Β (2 points).
Does the decrease in temperature favour products or reactants at equilibrium (1 point)?
what is the molarity for a solution with 25 g mgch in 350 ml water
how mineralization and immobilization are affected in waterlogged soils
A=[0.30],[0.60],[0.30] (mol/l)
B=[0.15],[0.30].[0.30] (mol/l)
C= 7.0 x 10-4,2.8 x 10-3,1.4 x 10-3(mol/L-s)
What is the rate equation for the reaction?
How many grams of NaF would have to be added to 2.00 L of 0.100 M HF
to yield a solution with a pH = 4.00?
How many grams of NaF would have to be added to 2.00 L of 0.100 M HF
to yield a solution with a pH = 4.00?
