Numerade

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2- Acetone boils at 56°C. Express this temperature in kelvins. -217 K -329 K 133 K 217 K 329 K

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What is the pH of a 0.4 M sodium formate (NaCHO2) solution? Ka (HCHO2)= 1.8x10^-4

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In an infant-toddler curriculum, the primary role of a caregiver is to _____. Group of answer choices restrict toddlers and teach them to use materials in certain ways ignore initiations from a child watch out for the children and keep them safe facilitate problem-solving skills

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A pH electrode is found to read 0.0 mV at pH = 7 and 414.12 mV at pH = 0. Assuming ideal electrode behavior, what is the pH of a solution that produces a potential of -175.6 mV? (express the answer to 3 decimal places)

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Question 2 (1 point) \_\_\_\_\_\_ populations live in the same area and \_\_\_\_\_\_\_ populations live in different areas. Allopatric, sympatric Sympatric, allopatric Allopatric, centrifugal Centrifugal, allopatric

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$6\frac{1}{3} \times 2\frac{1}{4} = $

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Find the distance, d, between the point S(10,8,3) and the plane 4x + 7y + 1z = 20. The distance, d, is (Round to the nearest hundredth.)

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A force given by $F(x) = 5x^3$ (In N/m³) acts on a 1-kg mass moving on a frictionless surface. The mass moves from x = 3.25 m to x = 6.67 m. a) How much work is done by the force? 1093.77J Submit Answer Incorrect. Tries 1/99 Previous Tries b) If the mass has a speed of 2 m/s at x = 3.25 m, what is its speed at x = 6.67 m? Submit Answer Tries 0/99

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A square platform has an area of 122 square feet. What is the approximate length of one side of the platform?

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A hemi-spherical heat source of radius $r_o = 1$ mm is embedded in a very large silicon substrate at $T_\infty = 25$ °C with thermal conductivity, $k = 50$ W/m-K and dissipates heat at a rate of $q = 35$ W. Its top surface is well insulated. insulator k 1) Obtain a general expression for the silicon substrate temperature, $T(r)$ as a function of $T_s$ (surface temperature of heat source), $r_o$, and $T_\infty$. [15 pts] 2) What is the temperature of hemi-spherical heat source surface, $T_s$? [15 pts]

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jennifer r.