Answer:
Formula and structure: Lead sulfide chemical formula is PbS and its molar mass is 239.26 g mol-1. Lead sulfide is formed by the cation Pb+2 (the lesser oxidized ion of Pb) and the anion S-2 (the lesser oxidizer ion of S).
Explanation:
The answer is false since ionization energy is the amount of energy required to REMOVE the most loosely bound electron
So,
To find the number of moles in 90g of NaOH, what we do is to divide the given amount by the molar mass of NaOH.
The molar mass of NaOH is 40g/mol.
So,
![\frac{90gNaOH}{\frac{40gNaOH}{mol}}=2.25\text{ moles of NaOH}](https://tex.z-dn.net/?f=%5Cfrac%7B90gNaOH%7D%7B%5Cfrac%7B40gNaOH%7D%7Bmol%7D%7D%3D2.25%5Ctext%7B%20moles%20of%20NaOH%7D)
Therefore, the correct answer is A. 2.25moles
Answer:
Rocks that undergo a change to form a new rock are referred to as metamorphic rocks. ... Sedimentary rocks were originally sediments, which were compacted under high pressure. Igneous rocks formed when liquid magma or lava—magma that has emerged onto the surface of the Earth—cooled and hardened
A is the anwser. Fuel in the ocean would cause pollution