A metal alloy (c = 0.550 J/g°C) with a mass of 275g absorbs 650.0 J. If the initial temperature of the alloy is 25.0°C, what is the finall temperature?

Three separate 10 g blocks of AlI, Cu, and Fe at 25°C each absorb 0.850 kJ of heat. Which block reaches the lowest temperature?

Consider the reaction. 2 Fe,0, → 4 Fe + 3 0, AHixn = +824.2 kJ The formation of 88.0 g of Fe results in the release of 1.30 × 10' kJ of heat. the absorption of 1.30 x 10' kJ of heat. the absorption of 325 kJ of heat. the release of 325 kJ of heat. the absorption of 18100 kJ of heat. the release of 18100 kJ of heat.

5.00 g of potassium hydroxide (molar mass = 56.1 g/mol) dissolves in 100.0 g of water and the temperature of the solution increases by 1.60oC. Calculate  ΔH for the reaction in kJ/mol of KOH .The specific heat capacity of the solution is 4.18 J/goC   ( Hint: the mass of the solution is 105g)      (Hint #2: is this + or -?) Your answer should be in kJ/mol and have 3 sig figs

Potassium hydrogen phthalate (KHP) is a monoprotic weak acid that is often used to standardize solutions for titrations. If it requires 67.31 mL of a sodium hydroxide solution to completely react 2.43 g of KHP (Molar Mass: 204.222 g/mol), what is the molarity of the sodium hydroxide?

A 735g sample of metal with a specific heat capacity of 0.282 of J/g•ºC is initially at a temperature of 21.8ºC. If 1.42 kJ of heat were added, what is the final temperature of the metal in ºC?

Consider the reaction. 2 Fe₂0₂4Fe +30₂ AHin = +824.2 kJ The formation of 62.0 g of Fe results in the release of 229 kJ of heat. the absorption of 229 kJ of heat. O the release of 12800 kJ of heat. the release of 915 kJ of heat. the absorption of 12800 kJ of heat. the absorption of 915 kJ of heat.

A sample of 175°C copper is placed into a beaker with 100 grams of 25°C water. Which sample of copper will heat the water to the lowest final temperature? The specific heat of copper is 0.385 J-g-1.°C-1. The specific heat of water is 4.184 J·g-1.°C-1. A. 5.0 g Cu B. 2.0 g Cu C. 0.5 g Cu D. 1.0 g Cu

What will be the final temperature when a 25.0 g block of aluminum (initially at 25 °C) absorbs 10.0 kJ of heat? The specific heat of Al is 0.900 J/g· degrees C.