Estimate (a) the maximum, and (b) the minimum thermal conductivity values (in W/m-K) for a cermet that contains 82 vol% carbide particles in a metal matrix. Assume thermal conductivities of 27 and 67 W/m-K for the carbide and metal, respectively. (a) W/m-K (b) W/m-K

A app.101edu.co Question 2 of 50 An old 0.500 L lecture bottle of triethylamine (N(CH:CH:):) was found in a lab and needed for a synthesis reaction. A pressure regulator indicated a pressure of 35.0 psi, and the lab was at room temperature (25.0°C). What mass of vaporized triethylamine in grams was left in the lecture bottle? +/-

A 6.3 X 10-3 m3 sample of helium gas stored at 298 K (25 °C) and 1.0 X 105 Pa pressure is transferred to a 2.0 X 10-3 m3 tank and maintained at a pressure of 2.8 X 105 Pa. What temperature is needed to maintain this pressure?

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181°F Which statement describes the overall relationship between volume and pressure? Esc O exponential O negative linear O direct O positive linear Partly sunny F2 -0- 2 F3 #M 3 F4 $ 4 F5 % 5 F6 Search -F7 6 F8 & 7 F9 * 8 F10 9 & 09 F11 S 1 0 F12 G Prt Sc

nR dT nRT -)dv dX where R (= 0.08206 atm-L/mol-K or 8.314 J/mol-K) is the gas constant; n is the number of mole, V is the volume and T is the temperature. av Determine the value of (in units of L (liter) and K (Kelvin)) when n = 4.00 mol, V = 114.8L and T = 350 K (with 3 significant figures). %3D

Given: (V1/n1)=(V2/n2) P1V1= P2V2 (V1/T1)=(V2/T2) P1/T1 = P2/T2 PV=nRT R=0.0821 atm•L/mol•K A flexible container at an initial volume of 6.13 L contains 3.51 mol of gas. More gas is added until the final volume is 19.1 L. Assuming constant temperature and pressure, calculate the number of moles added to the container.

Space probes to Mars have shown that its atmosphere consists mostly of carbon dioxide. The average temperature on the surface of Mars is –55°C with a pressure of 0.00629 atm. Compare the density of CO2 on Mars’s surface with that on the Earth’s surface at 23°C and one atmosphere. Density on Mars/Density on Earth= ____________/1