) The percentual weight (w/w) of Carbon in Ca(HCO3)2. ) The amount of substance of 120g of Calcium Chloride. ) The mass of 1.7 mmol of Glucose. ) The volume of 250mol of an ideal gas at physical standard conditions (273K, 1013 hPa) and at 2500hPa and 1300K. ) The efficiency of reaction 2.d), having 3.00g educt and 2.01g product

Write a balanced chemical equation for the standard formation reaction of solid potassium dichromate (K,Cr,0,).

A mountain climber experiences hypothermia (a critical lowering of the core temperature of the body that can lead to death) while attempting to summit Gasherbrum IV (a 7900-m high mountain in the Karakoram range on the boarder between China and Pakistan). Assume the climber has a central body mass of 51.0 kg and their core temperature has decreased to 31.5 C. Their climbing partner brings them a 1.95 L thermos of hot tea that is at a temperature of 78.0 C. Assume the heat capacity of the tea is that of water, 4.184 J g-1 C-1. and that its density is 1.00 g cm-3. Assume the average heat capacity of the human body is 3.470 J g-1 C-1. If the tea cools to 35.0 C inside the hypothermic body of the climber, how much does their internal temperature increase? Hints: 1. First calculate the heat lost by the tea as it cools 2. Use that heat to determine the temperature rise of the body Group of answer choices 1.27 C Not enough information is given to solve this problem 1.98 C 12.7 C

Objects can possess energy as (a) endothermic energy (b) potential energy (c) kinetic energy O a only O b only O conly O a and c O b and c