The design of an x-ray tube requires that electron flow through it is in a single direction or phase. If alternating current were supplied to the x-ray tube at high voltage, what would be the result?

When water undergoes condensation, energy is: absorbed released because IMFs are being formed IMFs are being overcome

Which 4 statements are true regarding Newton’s first law of motion?  * If no force acts on an object, there will be no acceleration. (YES). * Newton’s first law of motion is referred to as the law of inertia. (YES). * A body will remain at rest unless acted on by an external force. (YES). and… * ______________________________________________________________. 

Free Response 2 A small amount of rubidium bromide (RbBr) is dissolved in a large amount of water. After mixing, the resulting solution is colorless (none of the white crystalline solid remains, and the solution is transparent and not cloudy) and the temperature of the solution decreases.   A. At the atomic-molecular level, draw what you think the separate RbBr and H2O samples look like before mixing.  Make sure you include what all components of your drawing represent.  Indicate and label the strongest interactions present for each sample.              RbBr                                                                 H2O   B. At the atomic-molecular level, draw what you think the RbBr and H2O look like after they are mixed. Make sure you include what all components of your drawing represent.  Indicate and label the strongest interactions present after they are mixed.     C. Based on the information provided in Part A, the enthalpy of the solution ΔHsoln is (Positive   or    Negative) when RbBr dissolves in water.(This is your claim.)   D. Based on your answers from Parts A-B, list the bonds and/or interactions that are overcome in the solute (RbBr) and solvent (H2O) and formed in the dissolution process (RbBr and H2O solution). (This is your evidence.) Overcome:   Formed:   E. Based on your answers from Parts A-D, use your understanding of interaction strengths and energy to explain how your evidence (interactions before/after solution) supports your claim (ΔH). (This is your reasoning.)

Choose the process that is exothermic from the list below. 

Using the image in the previous question, what is the hybridization around the first oxygen atom?  

Children’s Motrin is sold as a solution that has 0.100 g of ibuprofen (C13H18O2) in 5.00 mL of solution. What is the molarity of ibuprofen in the solution?

Calculate the force on a 1000-kg mass accelerated at 5 m/s2.

Two wires connected to a battery and a lightbulb are dipped into a beaker of deionized water. No current flows, so the bulb remains off. A substance is added to the water and completely dissolves to make a solution. Once the solution forms, the light bulb turns on. What substance was added to the water? A. NaI B. Ethanol (CH3CH2OH) Because C. the ions move through the solution allowing the completion of the circuit. D. the electrons move through the solution allowing the completion of the circuit. E. the molecules move through the solution allowing the completion of the circuit.

Which term is described as the smallest quantity of electromagnetic energy?