Question

1)You are tasked with finding the number of calories in a new crunchy delicious snack. The initial sample is 20.13 g and after burning 18.12 g remains. The burning of the crunchy delicious snack increases the temperature of a 30.5 g water bath 72.3°C. Calculate the heat per gram of this crunchy delicious snack. 2)While measuring water hardness in your home, you use 50.0 mL of tap water with EBT indicator and use 6.75 mL of a 0.020 M EDTA in the titration. What is the concentration of calcium carbonate in the tap water (report in ppm) 3)How many grams of copper (II) sulfate is in 0.0124 moles of copper (II) sulfate hexahydrate? 14)Write the balanced and complete chemical reaction when aqueous ammonia and aqueous nitric acid react together