How much heat in joules must be added to 0.894 kg of beryllium to change it from a solid at 932°C to a liquid at 1285°C (its melting point)? For beryllium: L₁ = 1.35×106 J/kg, Lv = 3.24×10 J/kg, c = 1820 J/kg C° Q =

A 325 L of carbon tetrachloride weighs 500 kg. a. Calculate its density. b. Calculate its specific weight c. Calculate its specific gravity.

The volume of a tetrachloride having a mass of 1200 kg is 0.952 m^3, compute the specific gravity.

The kinetics of the austenite-to-pearlite transformation obey the Avrami relationship. The fraction transformed- time data is given below. Fraction Transformed Time (s) 0.2 12.6 0.8 28.2 Determine the total time required for 98% of the austenite to transform to pearlite: Write up to 2 DECIMAL PLACES Determine the transformation rate (per minute). Write up to 4 DECIMAL PLACES. Example: 0.0123

Period 6 is unusual in several ways.(a) It is the longest period in the table. How many elements be-long to Period 6? How many metals?(b) It contains no metalloids. Where is the metal/nonmetal boundary in Period 6?

A magnesium-lead alloy of mass 6.4 kg consists of a solid a phase that has a composition just slightly below the solubility limit at 300°C (570°F). The magnesium-lead phase diagram is shown in Animated Figure 9.20. (a) What mass of lead is in the alloy? i kg (b) If the alloy is heated to 400°C (750°F), how much more lead may be dissolved in the a phase without exceeding the solubility limit of this phase? kg

Figure P2.33 shows a portion of the H2O-NaCl phase diagram .a. Using the diagram, briefly explain how spreading salt on ice causes the ice to melt. Show numerical examples in your discussion. b. At a salt composition of 10%, what is the temperature at which ice will start melting? c. What is the eutectic temperature of the ice and salt combination?

Metal X has an atomic weight of 43.1 g/mol, theoretical density of 6.40 g/cm^3, and atomic radius of 122 pm. Determine whether the crystal structure of Metal X is BCC, FCC, or simple cubic. Provide your complete solution.

(9A metal rod made of some alloy is to be used as a thermometer. At OoC its length is 40000cm, and at 1000C its length is 40060cm. (a) What is the linear expansion coefficient of the alloy? (b) what is the temperature when its length is 39975cm?

(a) What is the physical significance of energy of activation ? Explain with diagram.(b) In general, it is observed that the rate of a chemical reaction doubles with every 10 degree rise in temperature. If the generalization holds good for the reaction in the temperature range of 295 K to 305 K, what would be the value of activation energy for this reaction ?[R = 8.314 J mol-1 K-1]