Answer:
Specific heat: = energy required to change a unit mass of a material by 1°C. Units: energy per unit mass per degree.
Latent heat = energy required to change the state (gas, liquid, solid) of a unit mass of material. Units: energy per unit mass.
Explanation:
Answer:
B. 2 Hours
Explanation:
If you are going 45 miles per hour, you will travel 45 miles in 1 hour. It will take you 2 hours to travel 90 miles at a speed of 45 miles per hour.
Answer:
B if I am correct
Explanation:
I am actually studying in my classroom for this. Glad I saw your question.
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Answer:
<u>Copper ( II ) chloride </u>
Explanation:
<em>According to the nomenclature , </em>
- <em>The metal ion name is followed by the non-metal ion</em>
- <em>The oxidation state of the metal is to be mentioned in the brackets .</em>
- <em>As
has two
ions , and the net charge on the compound is zero , the charge on copper is :</em>

thus ,
⇒
∴ ,
The proper nomenclature is :
Copper ( II ) chloride
The two different isotopes have weights :
w1 = 78.918 amu
w2 = 80.916 amu
average weight w3 = 79.903 amu
The mixing of two components can be modeled as
let the fraction of w1 be 'x'
hence 
now this is a linear equation in 'x'. Substituting the values we get
x = 0.507
hence the percentage of Br79 = 50.7% and the percentage of BR81 = 49.3%