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# Computer Science homework help

Computer Science homework help. The of fusion is the amount of thermal (see note below) required to cause a a liquid to freeze (by taking that much heat out) or a solid to melt (by putting that much heat in).
For example, the latent heat of fusion for water (ice) is about 334 kJ/mol. Find the amount of heat required to melt 36.0 g of ##H_2O## that is at 0 degrees C.
First of all, the latent heat is ONLY applied when the substance is pure and is already at the temperature of the phase transition (for example, 0 deg C to melt ice, or 100 deg C to boil water).
Notice that the units are kJ/mol, but we were given grams of water, so we must convert, so we will make this a dimensional analysis problem.
##(36.0gH2O)/1 * (1molH_2O)/(18.0g) * (334kJ)/(1molH2O)=668kJ##
The 18.0g/mol came from adding up the atomic masses to find the molar mass of water.
Notice that the units in the step before cancel until we are left with kJ, which are a unit of heat.
Note:
Latent heat of fusion is actually the total amount of enthalpy (a kind of energy) necessary to accomplish a phase change for a solid or liquid or gas at the freezing/melting point.
Phase changes are generally considered at constant , rather than constant volume. Because a kg of say, 0øC water, occupies less volume than a kg of 0øC ice, some has to be done to push the environment out of the way as that water expands to become ice.
Enthalpy ##H## is a quantity which includes the energy ##U## that goes into the substance at the new phase, plus the work, ##W=PDeltaV##, to expand or contract the substance into the new phase at the same pressure:
##H = U + PDeltaV##,
where ##P## is the ambient pressure, ##Delta V## is the change in volume, and ##U## is the internal energy of the substance in its new phase. Latent heat of fusion can also be called the enthalpy of fusion.Computer Science homework help

## Campbell University Statistics Problems

nursing essay writing service Campbell University Statistics Problems.

1. Suppose you want to test the claim that μ 1 > μ 2. Two samples are random, independent, and come from populations that are normally distributed. The sample statistics are given below. Assume that ≠ . At a level of significance of , when should you reject H 0? n 1 = 18 n 2 = 13 1 = 635 2 = 620 s 1 = 40 s 2 = 252. Suppose you want to test the claim that μ 1 ≠ μ 2. Assume the two samples are random and independent. At a level of significance of α = 0.02, when should you reject H 0?Population statistics: σ 1 = 0.76 and σ 2 = 0.51Sample statistics: 1 = 1.9, n 1 = 51 and 2 = 2.3, n 2 = 383. Find the critical values, t 0, to test the claim that μ 1 = μ 2. Two samples are random, independent, and come from populations that are normal. The sample statistics are given below. Assume that . n 1 = 25 n 2 = 30 1 = 25 2 = 23 s 1 = 1.5 s 2 = 1.94.Find the weighted estimate, to test the claim that p 1 > p 2. Use α = 0.01. Assume the samples are random and independent.Sample statistics: n 1 = 100, x 1 = 38, and n 2 = 140, x 2 = 505.Find the critical value, t 0, to test the claim that μ 1 < μ 2. Two samples are random, independent, and come from populations that are normal. The sample statistics are given below. Assume that . n 1 = 15 n 2 = 15 1 = 22.97 2 = 25.52 s 1 = 2.9 s 2 = 2.86. Find the weighted estimate, to test the claim that p 1 = p 2. Use α = 0.05. Assume the samples are random and independent.Sample statistics: n 1 = 50, x 1 = 35, and n 2 = 60, x 2 = 407.Suppose you want to test the claim that μ 1 ≠ μ 2. Assume the two samples are random and independent. At a level of significance of α = 0.05, when should you reject H 0?Population statistics: σ 1 = 1.5 and σ 2 = 1.9Sample statistics: 1 = 30, n 1 = 50 and 2 = 28, n 2 = 608.Construct a 95% confidence interval for μ 1 – μ 2. Assume the two samples are random and independent. The sample statistics are given below.Population statistics: σ 1 = 1.5 and σ 2 = 1.9Sample statistics: 1 = 25, n 1 = 50 and 2 = 23, n 2 = 609.Find the standardized test statistic, z, to test the claim that p 1 ≠ p 2. Assume the samples are random and independent.Sample statistics: n 1 = 1000, x 1 = 250, and n 2 = 1200, x 2 = 19510.Find the standardized test statistic to test the claim that μ 1 = μ 2. Assume the two samples are random and independent.Population statistics: σ 1 = 1.5 and σ 2 = 1.9Sample statistics: 1 = 29, n 1 = 50 and 2 = 27, n 2 = 6011.
Campbell University Statistics Problems

## RU Abnormal Psychology Defense Mechanism Materials Dr John Suler Discussion

RU Abnormal Psychology Defense Mechanism Materials Dr John Suler Discussion.

OVERVIEWOne of the concepts we read about this week is that of defense mechanisms. No matter whether you choose to use this perspective in your own practice or not, you will encounter this. We all use them and to some extent they can be helpful enough. The problem is when they become counterproductive to our goals, intentions, and quality relationships. One of the things I’ve learned over the years is that when you understand how defense mechanisms actually come about you become less likely to personalize/internalize “conflicts” and more likely to see solutions. For this week’s discussion, you will analyze yourself. DISCUSSIONBased on the materials attached below and describe what a defense mechanism is and how they theoretically come about.Share with us a story of a time or situation in your life where you utilized at least two defense mechanisms. Be sure to define your defense mechanisms and discuss the extent to which you consider these defenses as either mature and/or immature and why.
RU Abnormal Psychology Defense Mechanism Materials Dr John Suler Discussion

## MGT497 Assignments 1

MGT497 Assignments 1.

Audit Exercise Paper One Write a four to five page paper (at least two pages per exercise) that addresses the following audit exercises, found at the end of each respective chapter. Include an introductory paragraph about the business you have chosen, its mission, and its immediate M.T.I goals. As noted in the Final Paper Guidelines at the beginning of the Course Guide, your business should remain consistent throughout the course.·Audit Exercise Chapter 1: This exercise involves assessing firm’s M.T.I capabilities with strategy.·Audit Exercise Appendix 1: This exercise involves assessing sustainability and evaluating company stakeholder responsibility, the bottom line, and technology and innovation responsibility of the company.The complete instructions for the audit exercises can be found in Week Five of your online course or in the “Components of Course Evaluation” section of this guide.Carefully review the Grading Rubric for the criteria that will be used to evaluate your assignment.
MGT497 Assignments 1