the instrument used to measure the volume of a liquid, mass, length, and density is a graduated cylinder
the main 3 units of measurement in the metric system are meters, grams, and liters
Hello! Your answer will be C. If you need an explanation let me know!
Answer:
Root mean square speed = 649.205m/s
Explanation:
The root mean square speed shows the connection between the average kinetic energy of molecules and the gas temperature. it is derived from the ideal gas equation and the average kinetic energy. Vrms = square root ( 3RT/M).
The detailed explanation is as shown in the attachment
Answer:
Explanation:
Calcium is the element of the group 2 and period 4 which means that the valence electronic configuration is .
Chlorine is the element of the group 17 and period 3 which means that the valence electronic configuration is .
Thus, calcium losses 2 electrons to 2 atoms of chlorine and these 2 atoms of chlorine accepts each electron to form ionic bond. This is done in order that the octet of the atoms are complete and they become stable.
Ca Cl
2 1
Cross multiplying the valency, We get,
Thus, the formula of calcium chloride is .