Answer:
Explanation:
Hello,
In this case, we find the following states:
a. Liquid salt water at 28.0 °C.
b. Liquid salt water at 102.5 °C.
c. Vapor salt water at 102.5 °C.
The first process (1) is to heat the liquid water from 28.0 °C to 102.5 °C and the second one (2) to vaporize the liquid salt water. In such a way, each process has an amount of energy that when added, yields the total energy for the process as shown below:
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Answer:
D. Dense, conducts electricity, high melting point, giant structure, brittle
Explanation:
Graphite is an allotrope of carbon. It is similar to diamond except for some differences in their properties and mode of formation.
Graphite is typically a non-metal and should have properties of non-metals. Metals are malleable, ductile, conducts electricity, etc.
Graphite is able to conduct electricity because of the presence of free mobile electrons in its structure.
It is dense but its density is lower than that of diamond but higher than water.
Graphite is brittle with a high melting point which is close to that of diamond.
Sodium is categorized as a B. Element.
Answer: half life
Explanation: Radioactive decay follows first order kinetics and the time required for the decay of a radioactive material is calculated as follows:
t= time required
k= disintegration constant
x= amount of substance left after time t
a= initial amount of substance
when one half of the sample is decayed, one half of the sample remains and t can be represented as 
at 
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