(CH₃COO)₂Ca(aq) + Na₂CO₃(aq) = 2CH₃COONa(aq) + CaCO₃(s)
2CH₃COO⁻ + Ca²⁺ + 2Na⁺ + CO₃²⁻ = 2CH₃COO⁻ + 2Na⁺ + CaCO₃
Ca²⁺ + CO₃²⁻ = CaCO₃
Answer:
soalan ni yang ni tahun atau tingkatan
Answer:
Retrograde Motion
Explanation:
The theory that the earth revolves around the Sun is called the heliocentric theory, helio meaning 'sun' and centric meaning 'in the center.
' This theory was developed in parts by different astronomers over many years, namely Aristarchus, Copernicus, Kepler, and Galileo.
The reaction from society at the time was that the heliocentric theory was not even worth talking about.
Everyone had evidence to prove that the Earth was the center because if the sun started at one point in the morning and ended at another at night, it was common sense that we were obviously the center.
Copernicus heliocentric theory or it is also named as Sun-centred theory had accepted by Galileo.
The geocentric model is also known as geocentrism.
Answer:
d. P2O5.
Explanation:
We find the ratio of the atoms by dividing the percentages by the relative atomic masses:
P : 43.6 / 30.974 = 1.4076
O: 56.4 / 15.999 = 3.5252
1.4076 : 3.5252
= 1 : 2.5
= 2:5.
So the answer is P2O5.
