2. 677 grams of ethanol (2.57 J/g°C) starts at a temperature of 2°C. If energy is added to raise its temperature to 71°C, how many Joules were added? Note: 1 kilogram = 1000 grams 1 Calorie = 1 kcal = 1000 calories OF to °C: [(T-32)x 5 ]-9 3. A nail made of iron (c=0.45 J/g°C) has 34,500 Joules added to it. If the nail's temperature goes from 11°C to 892°C, what is the mass of the nail? 4. A box of Penguin Flakes® Cereal TM has 540 Calories. If all of these calories are used to heat up a bathtub of water (c = 1.00 cal/g°C) by 10.0°C, how many kilograms of water are in the bathtub?

Below are 3 real life situations. Pick two (2) them and explain ALL the science involved in the scenario. This means describe things like what is happening to the gas/liquid/solid molecules or atoms, which principles or laws are at work, why what is happening is happening, and how you know.  At sea level, a pot of water will boil at 100 °C. Suppose you wanted to boil the same amount of water high in the Rocky Mountains. What do you expect the temperature will need to be (generally speaking)? Why?   A can of soda sits in a sunny spot on the window sill for several hours. It is then opened at the same time as a cold can of soda from the refrigerator. What happens and why?   Weather balloons do not float out into space. They reach an altitude of about 15 miles above the surface (3x the height of Mt Everest) and they burst. Why?

7. The density of aluminum is 2.702 g/cm³. What is the final liquid level of water if 1.130 ounces of aluminum is dropped into a graduated cylinder containing 15.90 mL of water? (1 ounce = 28.3 g) A) 21.66 mL B) 17.08 mL C) 27.76 mL D) 47.95 mL

A flask weighs 64.25 g when empty and weighs 91.75 g when filled with water at 20oC. However, when the flask is filled withthe same volume ofisopropyl alcohol at the same temperature, the combinedmass of flask and alcohol is 86.00 g. (a) If the density of water is 0.99823 g/mL at 20oC, what is the volume of water that filled the flask? (b) Determine the density of isopropyl alcohol at 20oC.

hydrogen peroxide → water + oxygen List two physical / chemical properties for each compound

A student dissolves 106 g of compound Q in one liter of hot water. All of compound Q dissolves.  The student then cools the water to room temperature.  At room temperature, 52 g of compound Q dissolves in one liter of water.  How many grams of compound Q will recrystallize in the room temperature water? Include the unit in your answer.

Which molecules are enantiomers? Which molecules are the same? (A). H Br

Which piece of equipment would you use to measure 7.10 mL of CuSO4 (aq)?

Which is the correct balanced chemical equation for the reaction of solid potassium with liquid water. Express your answer as a chemical equation. Identify all of the phases in your answer. O K(s) +H2O(1)→KOH(aq) + H*(aq) O 4K(s) + 2H2O(1)→4KH(aq) + 02(g) О K's) + 2H2О() -КН:(аq) + 2ОH (аq) О K's) + 2H,О()--K(ОН)2(аq) + Ha(s) О 2K(s) + 2H>О() +2КОН(аq) + H- (g)

QUESTION 4 Rank the alkenes show in order of stability with 1 being most stable and 3 being least stable. ch8-d1-q3+4+5(2).jpg VA ✓ B