Mass number = number of protons + number of neutrons
The number of protons in the nucleus of an atom of phosphorus is equal to the atomic number of phosphorus, which is 15. If an atom of phosphorus has 17 neutrons, then the mass number would be 15 protons + 17 neutrons = 32. Thus, the correct answer choice here is B.
Lithium is used to build computer batteries, whereas iron is used in industry to construct buildings and bridges.
<h3>What are metals?</h3>
In engineering, metals are characterized to have electrical conductivity and other properties (e.g., ductility, reflectivity, etc).
For example, Lithium can be defined as soft metal (alkali metal) that is suitable to store electrical energy.
In conclusion, Lithium is used to build computer batteries, whereas iron is used in industry to construct buildings and bridges.
Learn more about metals here:
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Answer:
376.56
Explanation:
using the formula q=mcΔT, where m=15g, C=4.18J/g°C and ΔT=6.0°C
Answer:
0.1gmin-1
Explanation:
mass = 0.5g
time = 5minutes
rate= mass/time = 0.1gmin-1
Answer:
Below:
Explanation:
An iron will use 800 to 2000 watts, with an average iron using 1100 watts when heated on high.
