Answer:
Calcium sulphate CaSO4 is a naturally occurring calcium salt . it is commonly known in it's dehydrated form , CaSO4 , 2H2O , a white or colourless powder called gypsum . Hydrated calcium sulphate {CaSO4 × H2O } countians 21% ( by mass) of water of crystalization i.e. it's hydrated form is CA= 40 S= 32 O= 16 H=1
Explanation:
<h2>#hope</h2>
Couple of things:
1: only one type of bacteria was discovered metabolising sulphur, this does not necessarily mean that other bacteria, or indeed another organism can also metabolise sulphur. For his theory to be correct, many more and different types of organisms, metabolising sulphur needs to be discovered.
Secondly the use of the word diverse infers that more than just bacteria can metabolise sulphur. Bacteria are unicellular (single-celled) organisms, we therefore cannot say that multicellular organism can also do this, it could be specific to that one type of bacteria.
Answer:
C3H6
Explanation:
We can obtain the molecular formula by using the empirical formula and the molar mass in combination.
This is shown below:
[CH2]n = 42g/mol
We then add the atomic masses of carbon and hydrogen and multiply by n to give the value of n .
n[12 + 2(1)] = 42
14n = 42
n = 42/14 = 3
The molecular formula is thus [CH2]3 = C3H6
Answer:
Chemical Changes : The wax near flame burns and gives new substances like carbon dioxide, carbon soot, water vapour, heat and light. LPG is another example of a familiar process in which both the chemical and physical changes take place.
The number of electrons that are involved in the bonding of the molecule."