1) In order to write formulas of chemical compounds we need the periodic table to find out some oxidation numbers.
Sulfuric acid: H2SO4. This compound has a polyatomic ion called sulfate with a 2- charge. To balance those negative charges we need two H+ ions.
Nitrogen: N2
Oxygen: O2
Ammonia: NH3
Lime: CaCO3. This compound is made up of calcium (Ca2+) and a polyatomic ion called carbonate (CO3 2-). Two positive charges and two negative charges. It is balanced.
Phosphoric acid: H3PO4. This compound has a polyatomic ion called phosphate with a 3- charge. In this compound, we need 3 H+ to balance those negative charges.
Sodium hydroxide: NaOH. Hydroxide compounds have a two-part name. The name of the cation (Na+) and the name of the hydroxide (OH-). One positive charge and one negative charge. It is balanced.
Chlorine: Cl2.
Sodium carbonate: Na2CO3. This compound has a polyatomic ion called carbonate with a 2- charge. We need two positive charges to balance the compound. Sodium is in the first group in the periodic table. That means sodium has just one positive charge, so we need two sodiums.
Nitric acid: HNO3. This compound has a polyatomic ion called nitrate with a 1- charge. To balance that negative charge we need one H+ ion.
Im not sure i understand your question butttt there is an asteroid feild in between the planets mars and jupiter
Answer:
Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form.
Explanation:
A) Since both are carbons with the only difference in the number of neutrons,
They are called Isotopes
B) Carbon - 12 has 6 protons and 6 neutrons, while Carbon-13 has 6 protons and 7 neutrons,
Therefore Carbon-12 and Carbon-13 have the same number of protons
C) Carbon - 12 has 6 protons and 6 neutrons, while Carbon-13 has 6 protons and 7 neutrons,
Therefore Carbon-12 and Carbon-13 has different numbers of neutrons
D) Sorry i don't know any uses of Carbon-12 and Carbon-13, you might have to research to get it.
E or F) Sodium 23 has 12 neutrons and 11 electrons, because its mass number 23, atomic number is 11 and since protons and electrons count is same, the number of neutrons = mass number - atomic number = 23 - 11 = 12 neutrons
Happy to help :)
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Explanation:
mass = Moles * molar mass
molar mass of BaSO4 = 112+32+64= 208
= 1.72*208 = 357.76
