<span>a reaction accompanied by or requiring the absorption of heat</span>
Answer:
Pros
1)Ethanol Creates Positive Energy Balance
2) Ethanol is a renewable source of energy
3)made from multiple raw materials
4) Green House gas emission reduction
Cons
1) Price fluctuations becauset
The volume of Ethanol production is season dependent
2) has lower mileage
3) corrosive effect because ethanol can absorb water
Explanation:
The amount of green house gas produced in burning Ethanol is minimal compared to that produced in burning gasoline.
Also the corrosive effect on metallic part of vehicle since most likely since ethanol is water friendly
Answer:
0.4444 g/cm³ ≅ 0.44 g/cm³ (2 significant figures).
Explanation:
<em>d = m/V,</em>
where, d is the density of the material (g/cm³).
m is the mass of the material (m = 28 g).
V is the volume of the material (V = 63.0 cm³).
<em>∴ d = m/V </em>= (28 g)/(63.0 cm³) = <em>0.4444 g/cm³ ≅ 0.44 g/cm³ (2 significant figures).</em>
2,8,1
It's in group 1, so its outershell only has 1 electron, and the other shells are completely filled, so 2 then 8. :)
