What is the enthalpy change (in kj) for burning 18.0 g of methyl alcohol?

Question

18-10-2017
Chemistry

contestada

What is the enthalpy change (in kj) for burning 18.0 g of methyl alcohol?

Respuesta :

Otras preguntas

Scientists discovered that the inner core of Earth is a solid. Explain what evidence supports this thinking. Be sure to include how pressure, temperature, and d

Explain why Jefferson's declaration of rights is the foundation of the Declaration of Independence. Use at least two examples from the document to support your

Write the equation of the line

find the midpoint of joining 4 - 5 and 8 - 3

Which sentence contains an adverb that modifies another adverb?Required to answer. Single choice.Immersive Reader a. Daniel, Sharise, and Kim went downstairs

What is Sal comparing herself to in the first few paragraphs of the novel when describing her move from Bybanks to Euclid in the story "Walk Two Moons"? (The Fi

Why you think it was the main reason

In a short paragraph, evaluate the impact of the expansion of both the Mongols and the Turks on Europe and Asia. How did they affect the world at the time of th

What was a strategic advantage the South had during the Civil War? a. a large population b. the ability to blockade the northern ports c. the strength of milit

Joel's Taxi Service charges a flat rate of $15 plus $0.10 for each mile. Write an equation in function notation and find out how much it would cost to travel 25

W0lf93 W0lf93 · Answer 1 · 2017-10-29T00:09:29+02:00

perpendicular to a uniform 1.50- magnetic field, as shown in the figure. Part A Calculate the net force which the magnetic field exerts on the coil. ANSWER: =0Correct Part B Calculate the torque which the magnetic field exerts on the coil. ANSWER: =0Correct Part C The coil is rotated through a 30.0 angle about the axis shown, the left side coming out of the plane of the figureand the right side going into the plane. Calculate the net force which the magnetic field now exerts on the coil.( Hint: In order to help visualize this 3-dimensional problem, make a careful drawing of the coil when viewedalong the rotation axis.) ANSWER: =0Correct Part D Calculate the torque which the magnetic field now exerts on the coil. ANSWER: =8.09Ă—10 â’2 Correct Torque on a Current Loop in a Magnetic Field Learning Goal: To understand the origin of the torque on a current loop due to the magnetic forces on the current-carrying wires.This problem will show you how to calculate the torque on a magnetic dipole in a uniform magnetic field. We startwith a rectangular current loop, the shape of which allows us to calculate the Lorentz forces explicitly. Then wegeneralize our result. Even if you already know the general formula to solve this problem, you might find itinstructive to discover where it comes from Part A Find , the electric field inside the cube. Hint A.1 Net force on charges in a conductor Hint not displayed Hint A.2 Find the magnetic force magnitude Hint not displayed Hint A.3 Find the magnetic force direction Hint not displayed Hint A.4 Determine the force due to the electric field Hint not displayed Express the electric field in terms of , , and unit vectors ( , , and/or ). ANSWER: =CorrectNow, instead of electrons, suppose that the free charges have positive charge . Examples include "holes" insemiconductors and positive ions in liquids, each of which act as "conductors" for their free charges. Part B If one replaces the conducting cube with one that has positive charge carriers, in what direction does the inducedelectric field point? ANSWER: CorrectThe direction of the electric field stays the same regardless of the sign of the charges that are free to move in theconductor.Mathematically, you can see that this must be true since the expression you derived for the electric field isindependent of .Physically, this is because the force due to the magnetic field changes sign as well and causes positive charges tomove in the direction (as opposed to pushing negative charges in the direction). Therefore the result isalways the same: positive charges on the side and negative charges on the side. Because the electric fieldgoes from positive to negative charges will always point in the direction (given the original directions of