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a 195 g sample of potassium bicarbonate is decomposed by heating if the resulting potassium carbonate weighs 154 g and
suppose a collision produces a pair of particles an electron and a positron antielectron the two are both initially
a jet lands on an aircraft carrier at 140 mih 63 msa what is its acceleration if it stops in 20sb what is the
a 1200ml buffer solution is 0105m in nh3 and 0135m in nh4br what amount of hcl could this buffer neutralize before it
which aqueous solution will have the highest total number of moles of ions in the solution the answer is 100ml 3m
electric charge can accumulate on an airplane in flight you may have observed needle-shaped metal extensions on the
an alpha particle helium nucleus charge 2e starts from rest and travels a distance of 188 cm under the influence of a
you need to dissolve cacl2 in water to make a mixture that is 380 calcium chloride by mass if the total mass of the
on the apollo 14 mission to the moon astronaut alan shepard hit a golf ball with a 6 iron the free fall acceleration on
what is the ph of the buffer that result when 12 g of nah2po4 and 800 g of nahpo4 are diluted with water to a volume of
a a car that weighs 138000 n is initially moving at a speed of 420 kmhr when the brakes are applied and the car is
describe the difference between the following and list any particular advantage possessed by one over the other
consider the following chemical equation cl2g o2g cl2o3g assuming all gases are at the same temperature and pressure
two kids decide to race from one end of a 20 meter long moving sidewalk to the other and back phillip runs on the
you have two 120v ac24v ac transformers 16 high-voltage capacitors and 10 high-voltage diodes design on paper a circuit
a 866-kg sprinter exerts a force of 100 n on the starting block at an angle of 30 with respect to the ground if you
explain how the formation of a soap lsquomicelle helps remove dirt and oil in an aqueous
the toadfish makes use of resonance in a closed tube to produce very loud sounds the tube is its swim bladder used as
of these three separate and individual elements f ra and as arsenic is more likely to form polar bonds why and how do
an electric field given by 74middot - 44y2 47middot pierces a gaussian cube of edge length 40 m and positioned as
elimination competes with substitution write an equation for the elimination reaction of 2 chloro 2 methylpropane in
a 5 kg block starts with an initial speed of 8 ms up a ramp and comes to rest after 3s the ramp is at a 30 degree
at a particular temperature the equilibrium constant for the reaction h2g f2g 2hfg is k 360 a reaction mixture in a
a light bulb marked 100 w at 120 v is screwed into a socket at one end of a long extension cord in which each of the