Ultraviolent radiation i believe
Answer: Fossils, Precambrian
Explanation:)
Ionic bonding happens between cations and anions (a non-metal and a metal)
Ionic bonding is when elements give or take electrons to become more stable (have a full valence shell) this gives the element (now ions) a charge which attracts them to ions of the opposite charge (think of magnets - and - repel each other - and + attract)
2NaHCO3 -> Na2CO3 + H2O + CO2
<span>2.765g NaHCO3/MM = moles NaHCO3 </span>
<span>moles NaHCO3 x (1 mole Na2CO3 / 2 moles NaHCO3) x MM Na2CO3 = theoretical yield of Na2CO3 </span>
<span>Percent yield is simply the actual yield/theoretical yield (x100 to put it into percentage).
MM = Molar mass (grams of substance per mol)</span>
Fossil fuels are buried geologic deposits of organic materials. They are made of decaying plants and animals that have been turned into to natural oil. A few examples of fossil fuels are coal and oil.
