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Require to dissolve CaCl2 in water to make a mixture that is 31.5% calcium chloride by mass. If the total mass of the mixture is 278.6 g, explain what masses of CaCl2 and water should be used
assume that a particular process evolves 224 kj of heat and that 35 kj of pv work is done on the system at constant
a set of data gave an average unpopped corn kernel mass of 0.12 grams. how many kernels are in a pound 454 g of
what is the appropiate mechanism for the radical polymerization of 1-butyne? show the polymerization of three units of 1-butyne.
What is the pH (to nearest 0.01 pH unit) of a solution prepared by mixing 80.0 mL of 0.529 M HCl and 46.0 mL of 1.150 M NaOH? pH = What is the pH (to nearest 0.01 pH unit) of a solution prepared by mixing 51.0 mL of 0.0401 M NaOH
Determine a large cube of ice floating in seawater. The specific gravities of ice as well as seawater are 0.92 and 1.025 respectively. If a 10 cm high portion of the cube expands above the surface of the water, find out the height of the ice block..
The presence of reductants can enhance the thermodynamic favorability of the decomposition of nitrous oxide (N2O). Calculate deltaH
CO(g)+Cl2----COCl2(g) Kc=255 at 1000 K If the reaction mixture contains a CO concentration of 0.1500 M and a Cl2 concentration of 0.175 M at 1000K. What are the concetnrations of each substance when equilibrium is reached
what is the percent yield of CCl4 if 719 kg is produces from the reaction of 410. kg of CS2
Phenylacetic acid (C6H5CH2COOH) is one of the substances that accumulates in the blood of people with phenylketonuria, and inherited disorder that can cause mental retardation or even death
Describe the preparation of 0.250 L of 50.0 mM lactate buffer, pH 4.5 using a 0.5 M solution of lactic acid and 0.5 M solution of sodium lactate. pka=3.9
How long would a current of 100.0 amp need to be passed through a Al 3+ solution in an electrolysis cell to produce 40.0 g of aluminum metal? Al = 26.98 g/mol F = 96485 C/mol
The concrntration of the alkane C20H42 (FM 282.55) in particular sample of rainwater is 0.2 ppb. Assume that the density of rainwater is close to 1.00 g/mL
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