Answer:
1. NO2
2.49.4%
Explanation:
1. Find the moles of each and divide by the smallest
N: 30/14=2.14/2.14=1
O: 62/16=3.875/2.14=1.81 (round to nearest whole number)
NO2
2. Find the total mass and divide by each
Total: 291.7167
There are 9 oxygens so multiply mass by 9
16*9=144
144/291.7167=0.493629607
Answer:
"Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time."
Answer:
No we can’t cover the earth with one mole of pennies
Explanation:
We can’t cover the earth with one mole of pennies due to the fact that making this possible will require the flattening and extra expansion before it covers the whole surface.
The extra expansion and flattening with result in the loss of intermolecular forces and won’t remain as a solid and form other states of matter which won’t be able to cover the surface.
75.0 ml = 0.0750 L of the solution of a 1.0M HCl
0.0750L*1.0 mol/L = 0.075 mol HCl in 0.0750 L of the solution of a 1.0M HCl
Mg +2HCl ------> MgCl2 +H2
from reaction 2 mol 1 mol
0.075 mol x mol
x=0.075*1/2 = 0.0375 mol H2
Answer:
1) 100
2) 22
3) 39
4) 6
5) 2b + 6
6) 8
7) 4n + 20
Explanation:
If B is the midpoint of AC and C is the midpoint of BD, means that all 3 parts are equal. AB = BC = CD
1) If AB = 50 then AC = AB + BC = 50 +50 = 100
2)if BD = 44 then is CD = 44 - BC ⇔ CD = 44 - 22 = 22
3) if AC = 26 and AC = AB + BC then each part is 13
AD = AC + CD = 26 +13 = 39
4)if CD = 6 then AB = 6 Because all single parts are equal
5) if AC = 4b + 12 then is AB the half of it = 2b +6
6) if AD = 24 then AB = 1/3 of it = 8
7)if BC is 2n + 10 then is AC = 2x BC = 4n + 20