Consider the reaction: m + 2hcl → mcl2 + h2 when 0.85 mol of the metal, m, reacted with an aqueous hcl solution (the hcl is in excess), the temperature of the solution rose because the reaction produced 4035 j of heat. what is ∆h in kj per mol of m for this reaction? (hint: is this reaction exothermic or endothermic? ) it is possible that your answer could be either positive or negative. if it is negative, you must include the "minus" sign. enter your answer as a decimal number.

What’s a special glass that most beakers are made of

Label a-f based on the table using c for concentrated and d for dilute

The last few miles of the marathon are the most difficult for heather, her hair plastered to her head, sweat clinging to her arms, and her legs already feeling as if they had nothing left, just dead weight. after grabbing a cup of ice water, she feels the ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. in these last few miles, the breeze kicks up and she finally feels some coolness against her skin. drips of sweat, once clinging to her forehead, now spill down, and heather feels more pain as the sweat flows into her eyes. which of the following is the most likely reason why the ice struck heather’s nose when she took a drink? a) water can function as a solvent. b) water can store large amounts of heat. c) water can moderate temperatures through evaporative cooling. d) the density of water decreases when it freezes. e) water has a cohesive nature. sweat remained on heather’s forehead and arms because of the a) high salt content of sweat b) cohesive nature of water c) ability of water to moderate heat d) high evaporative cooling effect of water e) ability of water to act as a solvent