Explanation:
This calculator will find the missing variable in the physics equation for force (F = M * a), when two of the variables are known.
Answer:
There are different explanations but the main one is the number of electrons the element has.
Explanation:
The elements are also divided into nonmetals, metals, and metalloids. There are general areas for example, most metals are in the middle and left side of the periodic table, nonmetals are typically on the right, and metalloids are inbetween them.
Answer:
252.5g
Explanation:
Given parameters:
Volume of vodka = 0.8L
Molarity of ethanol = 6.86M
Unknown:
Mass of ethanol = ?
Solution:
Molarity is one of the ways of expressing concentration. It is the number of moles of a substance in a solution.
Since Vodka = ethanol + water = solution
Molarity = 
Number of moles of ethanol = molarity of vodka x volume of solution
Once we obtain the number of moles, we can derive the mass of the ethanol;
Number of moles = 6.86M x 0.8L = 5.49moles
Mass of ethanol = number of moles x molar mass
molar mass of ethanol = 12 + 3(1) + 12 + 2(1) + 16 + 1 = 46g/mol
Mass of ethanol = 5.49 x 46 = 252.5g
Answer:
28
Explanation:
electron = atomic number - charge(if the charge is positive and addition if the charge is negative)
electron = 30 - 2
electron = 28