Answer:
0
Explanation:
they cancel each other out (ex: 1 positive and 1 negative cancels, making it neutral or a charge of 0)
Answer:
eight oxygen atoms
Explanation:
This formula shows that in one mole of this compound, there are 3 moles of Ca atoms that combine with 2 moles of the PO4(phosphate) groups, which gives a total of 2 moles of P atoms and 8 moles of 0 atoms.
Answer:
Al2O3
Explanation:
If we combine two Al3+ ions and three O2- ions, and use subscripts to indicate the number of each ion in the formula, we obtain Al2O3 as the empirical formula
Answer:
Coal is not classified as a mineral because it comes from organic materials.
Explanation:
Minerals are naturally-formed substances that have a specific chemical makeup. They are created when elements combine. Minerals are <u>non-organic</u> and most have a set crystalline structure. Examples of minerals include diamond, azurite, beryl, and pyrite.
31,536,000 seconds because 365 days a year, 24 hours a day. Every hour is 60 minutes, and each minutes 60 seconds. So to get the answer 60 sec/min x 60 min/hr x 24 hr/day x 365 days/year = 31,536,000 seconds.
