Please someone help me ASAP! I literally posted this question many times and no one is answering! also, PLEASE DO NOT GIVE ME A
RANDOM GIBBERISH ANSWER OR ELSE I WILL REPORT YOU AND GIVE YOU A LOW RATING!!!
If you're unsure of the answer just type it in the comments.
QUESTION:
For the reactivity category, fill in the boxes to indicate how
reactive Helium is . The more filled boxes, the more
reactive Helium is. If helium has 6 valence electrons, how reactive is it?
Also, if all the boxes are filled then helium is very reactive, if not many boxes are filled then its not really reactive.
Just tell me how many boxes I should fill for how reactive the element Helium is!!
Here is the picture:
If you're unsure of the answer just type it in the comments.
QUESTION:
For the reactivity category, fill in the boxes to indicate how
reactive Helium is . The more filled boxes, the more
reactive Helium is. If helium has 6 valence electrons, how reactive is it?
Also, if all the boxes are filled then helium is very reactive, if not many boxes are filled then its not really reactive.
Just tell me how many boxes I should fill for how reactive the element Helium is!!
Here is the picture:
1 answer:
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126 grams of H2O is formed.
Explanation:
Data given:
volume of the gas = 88 Liters
pressure = 720 mm Hg or 0.947 atm
temperature T = 22 Degrees or 295.15 K
R = 0.08021 atm L/mole K
n =?
The formula is used is of ideal gas law to know the number of moles of CH4 undergoing combustion.
PV = nRT
n =
putting the values in the equation
= 0.947 X 88/ 0.08021 X 295.15
n = 3.5 moles
balanced reaction for combustion of methane
CH4 + O2 ⇒ CO2 + 2H20
1 mole of CH4 undergoes combustion to form 2 moles of water
3.5 moles will give x moles of water
2/1 = x/3.5
x = 7 moles of water (atomic mass of water = 18 gram/mole)
mass = atomic mass x number of moles
mass = 18 x 7
=126 grams of water is formed.
Answer:
Seven
Explanation:
The 3 means that you must multiply everything inside the parentheses by 3.
If you write the formula as AlO₃H₃, it is easier to count the atoms.
A:l 1 atom
O: 3
H: <u>3 atoms</u>
7 atoms
There are seven atoms in one formula unit of Al(OH)₃.
