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Problem- How does putting a nut on fire under a soda can filled with water show thermochemistry and how does it produce energy from an exothermic reaction or absorb energy from an endothermic reaction?
I am stuck in between this question please help me out
a 4.0 g sample of iron was heated from 0 degrees celsius to 20 degrees celsius. it absorbed 35.2 j of heat. what is the specific heat of this piece of iron?
A number of reaction mixtures did not become colorless within five minutes after the addition of bromine in acetic acid. Those solutions were put in a dark place and examined after one hour
Problem- If you wanted to measure the concentration of a particular species in a sample, describe the procedure you would use to do so.
nanowires are high aspect ratio metal or semiconducting wires with diameters on the order of 1-100 nanometers and
The density of an unknown metal is 8.94 g/cm3 and its atomic radius is 0.126 nm. It has a face-centered cubic lattice. Find the atomic weight of this metal
If the final temperature of the system is 59.4 oC, what is the calorimeter constant (Ccalorimeter) ? Use 4.184 J/goC for the heat capacity of water.
The amount of isotope reduces in a first-order process. If 19.0% of the original amount of 14C is present in a wooden tool at the time of analysis, explain what is the age of the tool. The half-life of 14C is 5730 yr.
What NaCl concentration results when 294 mL of an 0.780 M NaCl solution is mixed with 447 mL of a 0.200 M NaCl solution
Using standard reduction potentials, calculate the standard E0 cell, (emf), for each of the following reactions. 1. Show half reactions 2. Balance and gain electrons 3. Write overall reaction of each
If 101 g of CaO and 261 g of NH4Cl are mixed, what is the maximum possible yield of NH3?What mass of the excess reactant remains after the maximum amount of ammonia has been formed?
Problem- How many grams of Na2CO3 are present in 15.5 mL of a solution that is 26.0% Na2CO3 by mass. The density of the solution is 1.14 g/ml.
Two hydrogen atoms interact to form a hydrogen molecule. Classify the following statements that describe the stages of bond formation in a hydrogen molecule according to the predominant force existing between the two hydrogen atoms.
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