The major groups of minerals includes: carbonate ions and oxides, . In addition to this three groups the following are also the major groups of minerals
native elements
sulfate
sulfides
halides
silicate
nitrate among others such as phosphate and vanadate
Answer:
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Explanation:
Answer:
Now u have 48 g of O2. There. Fore mole=weight/M. W. Of oxygen. Therefor 3mole.
After that if we to multiply the avogadro number with it. So 3 *NA
Now u want only atom calculation then we have 2 molecule of oxygen then multiply it with 2 too.
So final claculation is =3*2*NA.
Explanation:
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Answer:
9.04 g
Explanation:
Given that:
pH of NaOH = 13.40
pOH = 14 - pH
pOH = 14 - 13.40
pOH = 0.6
Now, from there we can find the concentration of NaOH = [OH⁻]
= 
= 
= 0.2512 M
Given that; volume = 0.9 L
∴ number of moles of NaOH = volume × concentration of NaOH
= 0.9 × 0.2512
= 0.2261 moles
mass of NaOH = number of moles of NaOH × molar mass of NaOH
mass of NaOH = 0.2261 × 40
mass of NaOH = 9.04 g
Answer:
The answer is endothermic
