The molar mass of I2 : 283.81 g/mol
<h3>Further explanation
</h3>
Given
I2 compound
Required
The molar mass
Solution
Relative atomic mass (Ar) of element : the average atomic mass of its isotopes
Relative molecular weight (M) : The sum of the relative atomic mass of Ar
M AxBy = (x.Ar A + y. Ar B)
So for I2 :
= 2 x Ar I
= 2 x 126.90447 g/mol
= 253.
809 g/mol
= 253.81 g/mol
Answer:
C. naturally uncombined with other elements.
Explanation: Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air.
Answer:
5-methylhex-1-yne//5-methylhex-2-yne//2-methylhex-3-yne
Explanation:
We have to start with the information on the <u>IR spectrum</u>. The signal at 3300 is due to a <u>C-H bend sp carbon</u> and the signal in 2200 is due to the <u>stretch carbon-carbon</u>. Therefore we will have an alkyne. Now if we have 2-methylhexane as the product of hydrogenation we have <u>several options to put the triple bond</u>. Between carbons 1 and 2 (5-methylhex-1-yne), between carbons 2 and 3 (5-methylhex-2-yne) and between carbons 3 and 4 (2-methylhex-3-yne). On carbon 5 we have a tertiary carbon therefore we dont have any other options.
See figure 1
I hope it helps!
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.
<h3>
Answer:</h3>
The products of the reaction are; AgCl and NaNO₃
<h3>
Explanation:</h3>
In this question we need to know what is a double displacement reaction;
- A double displacement is a type of replacement reaction in which salts or ionic compounds exchange cations and anions to form new compounds as the products.
- In this case, the complete double replacement reaction is;
AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq)
- The reaction is also a precipitation reaction as it forms a precipitate as one of the products that is silver chloride (AgCl).
- Therefore, the products of the reaction are; AgCl and NaNO₃