Numerade

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Give me hazards of office work assessment with practical of 9 employes

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Concentration of HCl: M Initial Burette Reading: mL Final Burette Reading: mL Volume (mL) HCl used: mL Volume (mL) of Ca(OH) 2: mL Concentration of Ca(OH) 2: M Concentration of HCl: M Initial Burette Reading: mL Final Burette Reading: mL Volume (mL) HCl used: mL Volume (mL) of Ca(OH) 2: mL Concentration of Ca(OH) 2: M Average Molarity of Ca(OH) 2: (1) Concentration of Ca 2+ (x): Concentration of OH - (2x): Show calculations: (2) What is the pH of this solution? (3) What is the experimental Ksp of Ca(OH)2? (4) Calculate G in kJ for the reaction at 25ᵒC given your experimental Ksp value. Explain why the sign of G supports the Ksp of calcium hydroxide using the magnitude of K and the sign of G to support your answer. (5) Calculate S in J at 25ᵒ for the reaction if H (heat of solution) is 132 kJ/mol K. Explain how the sign of S supports the dissolution of Ca(OH) 2 using the laws of entropy.

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Below is a photo of a water-jet amusement ride. a) Concisely explain how fluid mechanics keeps this person elevated. b) Derive an equation to estimate the total volumetric flow rate $Q$ required to keep the person elevated. (You must identify which parameters matter in this situation.) c) Comment on the sensitivity of this flow rate to the weight of the person lifted (e.g. if the weight is doubled, how must the flow rate change?) d) From your equation in (b), make a quantitative estimate for the total volumetric flow rate in this image based on reasonable estimates of conditions, dimensions, etc. (Rough estimates are acceptable. Thus, you do not need to look up any information, but just use the image. Remember that if you do choose to consult resources outside of the course materials, this could be acceptable, but then you must document and cite them here.)

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Give your answer in component form. (Assume that x -axis is horizontal and points to the right, and y -axis points upward.) Express your answers in newtons per coulomb separated by a comma.

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The degree of increase in American political polarization can be seen in the increased percentage of: - Democrats who see members of the Republican Party as existential threats to America - The number of candidates who call other candidates bad names - Both party members who see members of the other party as an existential threat to America - Republicans who see members of the Democrat Party as existential threats to America

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6. Heat (Q) is escaping at a constant rate through the walls (area A) of a spherical cavity ( ). Find the temperature T at a distance r from the center of the sphere if the inside wall has radius $r_1$=1 cm and temperature $T_1$=100 C and the outside wall has $r_2$=2 cm and $T_2$=0 C.

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Given the following balanced equation, determine the rate of reaction with respect to [H2]. N2(g) + 3 H2(g) ? 2 NH3(g) ? rate = -1/3(?H2/?t) ? rate = +1/3(?H2/?t) It is not possible to determine without more information ? rate = +3(?H2/?t) ? rate = -3(?H2/?t)

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3.20. Prove that each of the following rings is not a field: (a) $\mathbb{Z}[i]$. (b) $\mathbb{R}[x]$. (c) $\mathbb{H}$. (d) $M_n(\mathbb{R})$ if $n \ge 2$. 3.21. Let $R$ be a commutative ring. Prove Proposition 3.15, which says that $R$ is an integral domain if and only if it has the cancellation property.

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What is the value of the radical expression shown below? √(25/49)

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Use Figure. Suppose the market is at equilibrium at point C. If baseball bats and furniture are substitutes in production, what letter would best describe equilibrium in the market for furniture if the price of baseball bats rises?

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alvaro c.