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Magnesium nitride reacts with liquid water to form insoluble magnesium hyrdroxide and ammonia. What is the balanced equation for such?
A hydrate of cobalt (ii) chloride had a mass of 238.1 g before heating. After heating, the anhydrous CoCl2 weighed 130.7 g.
What is the mass of the water that was driven off?
How many moles of water were driven off?
How many moles of anhydrous CoCl2 remain?
What is the hydration number (moles of water per mole of compoud)?
In the complex ion [ML6]n+, Mn+ has seven d electrons and L is a weak field ligand. According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired electrons?
How much work is done in kilojoules for the reaction of 6.40 of acetylene at atmospheric pressure if the volume change is -2.76.
The compound 2-methyl-1,4-pentadiene would be classified as what type of diene? Select the least stable diene listed below
Determine the final concentration and Determine What mass of Ar is needed to exert half the pressure (at the same conditions of volume and temperature)?
Use the Nutritional information on the food bag to calculate the calories per gram? How does this information compare to your information? How do you explain the discrepancy? How could you do the experiment differently to get a more accurate value..
In a gas mixture, the partial pressures are nitrogen 420 torr , oxygen 125 torr , and helium 245 torr. What is the total pressure (torr) exerted by the gas mixture?
A rigid tank of volume 0.5 m^3 is connected to a piston cylinder assembly by a valve, as shown below. Both vessels contain pure water. They a re immersed in a constant-temperature bath at 200°C and 600 kPa
How many grams of magnesium chloride must be dissolved in 568 g of water to give a solution that freezes at -2.38°C
What is the molar concentration of a H3PO3 solution if 150.00 mL of the solution was required to neutralize 75.00 mL of NaOH whose concentration was 1.50 molar?
A biochemist is trying to purify the enzyme hexokinase from a bacterium that normally grows in the Arctic Ocean at 5C. In the next lab
A mixture consisting of 30ml of waste and 270ml of seeded dilution water has an initial DO of 8.55mg/l; after 5 day, it has a final DO of 2.40 mg/l. Another bottle containing just the seeded dilution water has an initial DO of 8.75 mg/l
a 70g piece of ice at 0c is added to a sample of water at 6c, all of the ice melts and the temp of the water decreases to 0c, how many grams of water were in the sample?
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