You hydrated yourself, take shower, basically all living organisms need water to function and live
Electrons = protons
protons = atomic number
protons + neutrons = atomic mass
Therefore: a) protons + 7 = 15
protons= 15 -7
protons= 8
B) Remember proton = atomic number
so atomic number = 8
C)Now we know the atomic number so we can easily check on the periodic table what element has an atomic number of 8, which is Oxygen
Answer: A. 5.41
Explanation:
To calculate the moles :
According to stoichiometry :
3 moles of require = 2 moles of
Thus 0.0261 moles of will require= of
Thus is the limiting reagent as it limits the formation of product and is the excess reagent.
As 3 moles of give = 3 moles of
Thus 0.0261 moles of give = of
Mass of
Thus 5.41 g of solid lead will be produced from the given masses of both reactants.
<span>By forming an oxide layer almost instantly after fresh metal is exposed ._.
</span>