Answer:
the nucleus of an atom consistens of protons and neutrons
the reaction is HF + NaOH which leads to NaF
Answer:
Filling in the blank, this is an example of <u>chemical weathering</u> which happens <u>to rocks</u> overtime.
Explanation:
Chemical weathering occurs when rocks are disintegrated by chemicals.
Rain water becomes acid rain when it reacts with carbon dioxide in the atmosphere (to form carbonic acid, HCO3).
When acidic rainwater falls and stays on rocks, chemical reactions take place with the minerals present in the rock, causing the rock to weather.
Areas with immense carbon dioxide and sulphur dioxide pollution increases rain water acidity, which in turn causes moisture in the atmosphere to dissolve these gases and produce acid rain.
B) simplest ratio of elements
An empirical formula is the simplest ratio of a compound. For example, a compound like C4H8 would have an empirical formula of CH2.
Silver and Gold are different as their ELEMENT charateristics. To be more precise, they both have different number of protons (which is part of their ELEMENT charateristc)