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C$_{2}$H$_{4}$(g) + H$_{2}$(g) $\xrightarrow{\text{platinum}}$ C$_{2}$H$_{6}$(g) C$_{2}$H$_{4}$(g) is reduced by H$_{2}$(g) in the presence of a solid platinum catalyst, as represented by the equation above. Factors that could affect the rate of the reaction include which of the following? I. Changes in the partial pressure of H$_{2}$(g) II. Changes in the particle size of the platinum catalyst III. Changes in the temperature of the reaction system O I and III only O I, II, and III O II and III only O III only O I and II only

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Exercise 1 Describing an Oxidation-Reduction Reaction In this exercise, you will add a solution that contains silver ions to elemental copper to elicit a redox reaction. You will observe the reaction and then write an equation that describes the movement of electrons.

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What factors are “cycled” in an ecosystem? What factors flow through an ecosystem

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1. Pancreatic beta cells sense an increase in blood glucose and GIP and release stored insulin, which in turn promotes GLUT to uptake glucose to maintain blood glucose homeostasis 2. How does the body sweat when it's temperature becomes too hot mechanistic; teleological both mechanistic both teleological teleological; mechanistic

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If 4 colors are available, in how many ways K2,3 can be properly colorable?

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Candidates for a job are interviewed one by one until a qualified candidate is found. Thirty percent of the candidates are qualified. What is the probability that the first candidate is unqualified and the second candidate is qualified?

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would it be possible to do "genetic mapping by gene linking" in a diploid organism that is completely homozygous, that is, each pair of chromozomes the mother and the father chromosomes are completely identical (except for the sex chromosomes)? explain

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Homework 7 Solving A linear system using Lu factorization. $x_1 - 3x_2 = -5$ $x_2 + 3x_3 = -1$ $2x_1 - 10x_2 + 2x_3 = -20$. $\begin{bmatrix} 1 & -3 & 0 \ 0 & 1 & 3 \ 2 & -10 & 2 \end{bmatrix} \begin{bmatrix} x_1 \ x_2 \ x_3 \end{bmatrix} = \begin{bmatrix} -5 \ -1 \ -20 \end{bmatrix}$ Solve this linear System using LU factorization. $L = \begin{bmatrix} 1 & 0 & 0 \ l_{21} & 1 & 0 \ l_{31} & l_{32} & 1 \end{bmatrix} U = \begin{bmatrix} u_{11} & u_{12} & u_{13} \ 0 & u_{22} & u_{23} \ 0 & 0 & u_{33} \end{bmatrix}$ Find $x_1$, $x_2$, $x_3$.

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e) get more than 1 heads after flipping a coin fifteen times. f) make a bit string of length ten which starts with 11 OR ends with 00. g) make a bit string of length ten with no more than three zeros. h) find an integer between 0 and 300 which is divisible by 5 or 11, but not both. i) find an integer between 0 and 300 which is neither divisible by 5 nor by 11.

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QUESTION 4 Which of these is the correct sequence of smallest to largest? A. Molecules, atoms, elements, electrons B. Elements, atoms, molecules, protons C. Protons, atoms, molecules, cells D. Cells, protons, atoms, molecules E. Atoms, cells, electrons, molecules QUESTION 5 If you were going to study the effects of a certain fertilizer on plant growth, which list of variables would you most likely want to control (keep constant)? A. Fertilizer, soil type, water, plant type B. Fertilizer, soil type, water, light C. Plant type, soil type, water, light D. Plant type and fertilizer E. Plant type, soil type QUESTION 6 What is the difference between a \"theory\" as the word is commonly used, and a scientific theory? A. An everyday theory is a fact, and a scientific theory is an idea. B. An everyday theory can be wrong and a scientific theory never is. C. An everyday theory is an idea and a scientific theory is a fact. D. An everyday theory is a guess and a scientific theory has been repeatedly tested. E. They are the same thing.

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michael c.