Does compound form ionic-covalent or a molecular crystal
The compound (NH2)2CO is a solid at room temperature.it melts at 134 degree. It does not conduct electricity in either the solid or liquid state. Does (NH2)2CO form an ionic,a covalent or a molecular crystal? Explain how you arrived at your answer?
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Benzene has a heat of vaporization of 30.72kJ/mol and a normal boiling point of 80.1 degrees C. At what temperature does benzene boil when the external pressure is 470 torr?
We are trying to predict if two different liquid substances will mix to form a solution. If heat of solution is positive what determines whether or not the liquids mix?
What is the pH of a solution of 6.5 * 10^-9 mol of Ca(OH)2 in 10.0 L of water [ Ksp of Ca(OH)2 = 6.5 * 10^-6 ] ?
How has the influence of content and state standards improved what content is being taught in the classroom? What are some possible negative effects this mandate has had on American education? Explain.
It does not conduct electricity in either the solid or liquid state. Does (NH2)2CO form an ionic,a covalent or a molecular crystal?
How effective is communication in your workplace? Give at least two examples of either how communication is effective or ineffective, and tell what you would do to improve it?
At 55.0 ºC , what is the vapor pressure of a solution prepared by dissolving 65.4g of in 259g of water? The vapor pressure of water at 55.0 ºC is 118 mmHg. Assume complete dissociation of the solute.
Calculate the solubility of potassium bromide at 23 degrees C. Assume that the solubility increases by an equal amount of each degree between 20-30 degrees C
A bucket filled with water has a mass of 23 kg and is attached to a rope, which in turn, is wound around a 0.050-m radius cylinder at the top of a well. What torque does the weight of water and bucket produce on the cylinder if the cylinder is not
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