Answer:
1) Exothermic.
2)
3)
Explanation:
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1) In this case, for these calorimetry problems, we can realize that since the temperature increases the reaction is exothermic because it is releasing heat to solution, that is why the temperature goes from 22.0 °C to 28.6 °C.
2) Now, for the total heat released by the reaction, we first need to assume that all of it is absorbed by the solution since it is possible to assume that the calorimeter is perfectly isolated. In such a way, it is also valid to assume that the specific heat of the solution is 4.184 J/(g°C) as it is mostly water, therefore, the heat released by the reaction is:
3) Finally, since the enthalpy of reaction is calculated by dividing the heat released by the reaction over the moles of the solute, in this case LiCl, we proceed as follows:
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Reactants Na and O₂
Products Na₂0
Explanation:
Na + O₂ ⇒ Na₂0
The reactants are the species on the left hand side of chemical equations.
The products are the species on the right hand side of chemical equations.
A chemical equations shows the process of a chemical change in which reactants combines to give a desired product.
The above reaction is a synthesis or combination reaction in which a reactants combines to give products.
Species that are combining are called reactants
Species that are formed are the products.
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Answer:Convection currents drive the movement of Earth's rigid tectonic plates in the planet's fluid molten mantle. In places where convection currents rise up towards the crust's surface, tectonic plates move away from each other in a process known as seafloor spreading (Fig. 7.21).
Explanation:
Answer:
cells like bacteria are bisexual so they split and their offspring is 100 percent like the parent and this process happens over and over
Explanation:
Answer:
copper rally isn't useful like iron we have cars and all that but copper is made for like copper coins and wires
Explanation:
Iron is more reactive than copper as copper has less outer shells than iron so copper is less likely to react with another element as it has a stronger hold over the electrons.