Question

i need all questions answered

3.1.- Identify each of the following as a element, compound or mixture: A) pasta and tomato sauce B) aluminum foil C) helium D) air E) Aspirin 3.2.- Identify each of the following as a homogeneous or heterogeneous mixture: A. hot fudge sundae B. shampoo C. sugar water D. peach pie 3.3.- Identify each of the following as solid, liquid, or gas: a. oil paint in a container b. ice cubes in a bowl c. salad dressing in a bowl 3.4.- Identify each of the following as a physical or chemical property: a. burning of gasoline to give CO2 and water vapor b. souring of milk c. magnetizing a compass needle d. dicing potatoes into small pieces 3.5.-Identify the following as kinetic of potential energy examples a) Hitting a cue ball in a billiards game c) Accumulated snow in a mountain b) A coiled spring. d) Going downhill on a bicycle 3.6.- A large bottle containing 883 g of water at 4 °C is removed from the refrigerator. How many kilojoules are absorbed to warm the water to room temperature of 22 °C? 3.7.- how many joules are required to boil 150 grams of water? 3.8.- When a substance with a mass of 8.36 g absorbs 378 J, its temperature increases from 17.2 °C to 35.6 °C. Calculate the specific heat, in J/g °C, of the substance. 3.9. Your friend, who has a mass of 70.0 kg, has a slice of pizza, a cola soft drink, and ice cream. Carbohydrate tgl Fatig Protein (g) Pura 0 0 Cola ke cream 44 a. Calculate the total kilocalories for each food type in this meal (round off the kilocalories to the tens place). Carbohydrate: 4 kcal/lg Fat (lipid): 9 kcal/lg Protein: 4 kcal/lg b. Determine the total kilocalories for the meal (round off to the tens place). c. determine the number of hours of sitting needed to burn off the kilocalories in this meal. Energy kalh) Energy ki/h) Activity Sleeping Sitting 100 420

Answer 1

Solution: 3.1: (A) Pasta - Mixture. It is made by wheat of lour mixed with Water or eggs Tomato sauce - Mixture ( mixture of tomatoest Salt's theobs or spices Aluminium foila Element It is thin sheet of Aluminium) (23) (e) He - Element i It is a zero group element in a periodic table 4 also gascinert) D) Air - mixture goses he ixture of many i 4t is mixture of many gan Na, 02020) 4 lujo others) ( 78')) E) Aspirin Compound C-OH I Love G F is nonsteroidal antiinflamominking drug 32: A) Hot fudge Sundae - Heterogeneous l Mixture of ice cr chocolate ieous (Mixture of ice cream of rich B) Shampoo - c) Sugar-wana Homogeneous l Uniformy thoongout 1 Homogeneous I sugar dissone in Wonder of form a uniform one 1. phase ) Heterogeneous I because it is not in one please ) DJ Peace pie - 3:32 A) Oil paint in a container - liquid B) c) Ice cubes in a bowl - Sou'd Salad dressing in a bowl - Liquid

3.4: Val5% 4) burning of gasoline to give coat water Vapor - Chemical (CH)n +2O2 nCO2 + H₂O ( Napoor) gasoline By souring of milk Chemical l Produced by acidification the same dhe pa of milk , c) magnetizing of compass needle - Physical I Magnet produced C . Magnetic field - which incluced & magnetization in B) Diving potatoes into small pieces - Physical change compass needle, ( be cause cutting of potatoes, its molecule separte . bwithout change Store magnen