What must have been contaminating the water
What could this substance have been? And what must have been contaminating the water in the first place to produce this by reacting with bicarbonate of soda?
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A 15 g bullet is fired into the bob of a ballistic pendulum of mass 1.8 kg. When the bob is at its maximum height, the strings make an angle of 60° with the vertical. The length of the pendulum is 2.3 m. Find the speed of the bullet.
2NaHCO3 at equilibrium Na2CO3 +CO2 + H2O Kp= 0.23 at 100 degreesC. If a sample of NaHCO3 is placed in an evacuated flaskand allowed to achieve equilibrium at 100 degrees C what will the total gas pressure be?
Construct a model that gives the concentration C of the brine after boiling it. (Let x represent the number of liters of water that Sarah boiled off.)
Two resistors are wired in series. The second resistor has twice the resistance as the first. Current passes through the combination. Compared to the current through the first resistor, the current through the second resistor is:
The student determined that the mass lost by the same was 1.8053. What was the percent water in the original hydrated sample? Show calculation setup
A 0.70 kg mass at the end of a spring vibrates 4.0 times per second with an amplitude of 0.15 m. Determine: a) the velocity when it passes the equilibrium point
Accordin to this model, when will the population of the country reach a) 302 million people? b)372 million people? Give the year as an answer for a and b.
F2O3 is added to Al. Potassium chlorate, sugar are added attop of this, followed by few drops of concentrated sulfuric acid tostart this very exothermic reaction. at the end aluminum has reduced iron oxide to iron.
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