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1) does a 10kg solid iron brick have twice as much mass as a 5 kg solid brick?
twice as much weight?
twice as much volume?
2) does a 10kg solid iron brick have twice as much mass as a 5kg solid block of wood?
3) what is the volume of a 12.0g sample of water?
4) a piece of gold has a mass of 5.2g and it displaces 4.16 ml of water. calculate its density.
5) which molecule are moving fast on average a swimming pool of water or a cup of water?
Under certain conditions, the substance ammonium nitrite can be broken down to form nitrogen and water. If 32.4 grams of ammonium nitrite react to form 14.2 grams of nitrogen
what volume of ethylene glycol, a nonelectrolyte, must be added to 15.0 Liters of water to produce an antifreeze solution with a freezing point of - 30 degrees celcius? what is the boiling point of the solution?
The mass spectrum of an organic compound shows the relative abundance of M to be 34.29% and M+1 to be 8.901%. Assuming the peaks are caused by 12C and 13C isotopes, determine the number of carbon atoms in the compound. Natural abundance: 12C is 98..
You have a 1.0 mL sample of unknown concentration that requires 8.0 mL of titrant to change the color of the solution. How many mg of ascorbic acid are in your unknown sample
Why does tellurium have an endothermic electron affinity. In other words, why would it take energy to add an electron to it
Consider the Bohr Model for the hydrogen atom. Which of the following electron transitions releases the MOST energy. n = 6 to n = 4 n = 5 to n = 3 n = 4 to n = 2 n = 3 to n = 1 n = 2 to n = 1
how many liters of 13.5 molar HCl stock solution are needed to make 10.5 liters of a 1.8 molar HCl solution?
An electrical motor is used to operate a Carnot refrigerator with an interior temperature of 0.00 C. Liquid water at 0.00 C is placed into the refrigerator and transformed to ice at 0.00 C
How many moles of NaF must be dissolved in 1.00 liter of a saturated solution of PbF2 at 25 °C to reduce the Pb2+ to 1 x 10-6 molar?
Starting with needed alkanes, alkenes and inorganic regrets, devise syntheses for the following compounds. Yout method should produce each compound in good yield and free of isomers.
for a solution having 1 x 10-3 equivalentsliter total alkalinity contributions from hco3- co32- and oh- at h4.69 e-11
If 0.02 moles of PbCl2 is added to 500 dm3 of a 0.01 M salt water solution, what is the Qs value and will PbCl2 precipitate?Ksp = 1.6 x 10-5.
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