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Pelcomtel fall 2020-Compatibility Mode Word Search eferences Mailings Ma Ma djaH 15 E E AaBbCeI AaBbCd AaBbC AaBbC Aab - -E E & EE 1 Normal 1 No Spac. Heading1 Subte Paragraph sayas 14 Which of the following is an example of something with potential energy 1 a ball falling through the air 2 throwing a dart at a dart board 3. a ball rolling down a slide 4 an arron flving through the air a boulder at the top of a clitf

4. Calculate the standard heat of formation of calcium carbide (CaC) from its elements in kJ/mol using the following thermochemical equations. (hint come up with the overall equation first) Ca(s) + 2H₂O ⇒ Ca(OH)2(s) + H₂(g) 2C(s) + O2(g) → 2CO CaO + H₂O⇒ Ca(OH)2() 2H2(g) + O2(g) → 2H₂O) CaO) + 3C,,→ CaCs) + CO ΔΗ°= - 414.79 kJ ΔΗ°= - 221.00 kJ ΔΗ°= - 65.19 kJ ΔΗ°= - 571.80 kJ AH°= + 462.30 kJ 1

Material: Block Mass: Соpper 5.0 g 10.0 g Heating Duration: 2 s Нeat Reset Tinitial T final 20.0 °C 71.9 °C 100 J has been transferred to the block. Experiment Complete Click Reset for a new experiment. Specific heat capacity is a measure of the quantity of heating required to raise 1 g of a substance 1 °C (1 K). Specific heat capacity can be calculated from the equation quantity heating (J) mass (g) x AT(°C) specific heat capacity (J g1 °C) = m x AT Use the following settings: Material: Copper Heating Duration: 2.0 s Block Mass: 5.0 g Run the experiment and calculate the value of the specific heat capacity for copper. ]× Jg°c!