<u>X(N03)2</u>
Given: Consider a hypothetical atom x
molecular formula of calcium nitrate = Ca(NO3)2
formula of x chloride is xcl2
molecular formula for x nitrate = ?
- we are first putting calcium with chloride
- on checking calcium on the periodic table we observe it in group 2
- so calcium has two plus charge
- whereas chloride being a halogen it is observed in group 7
- it forms ion with one negative charge which would become CaCl2
- so if we have Ca(NO3)2 and see a Cl2
- with our hypothetical atom x , if the formula of x with chloride as XCl2 then formula with the nitrate is going to be x
- this will be similar to calcium because calcium is just like it when we look at calcium with chloride
- hence when x goes with nitrate it is going to look just like the formula for calcium nitrate
- this gives us the final answer to be <u>X(NO3)2</u>
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Answer:
D
Explanation:
If the deer leave the forest then they are avoiding compotation
I suppose that the question ask the following:
What is the mass of a sample, composed of C₃H₅N₃O₉ molecule, that contains 100 g carbon?
First we calculate the molecular mass of our molecule C₃H₅N₃O₉.
molecular mass = 12 × 3 + 1 × 5 + 14 × 3 + 16 × 9 = 227 g/mol
Now we devise the following reasoning:
if 227 g of our molecule contains 27 g of carbon
then X g of our molecule contains 100 g carbon
X = (100 × 227) / 27 = 840.7 g
If im not mistaken about like three orr four
yea its four cuz its hard to exaplin lol