The balanced equation is C6H14(g)
+ 19/2O2(g) → 6CO2(g) + 7H2O(g). If you are given 7.9 moles C6H14, multiply it
by a ratio of 19/2/1 to get the moles of oxygen. Then, you will get 75.05 moles
of O2.
Answer:
transverse waves, motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance.
Answer:
B. to determine that electric beams in cathode ray tubes were actually made of particles
Explanation:
Answer:
The mass of iron needed to react with the oxygen is 70 g.
Explanation:
The balanced chemical reaction between iron and oxygen is given as;
4Fe + 3O₂ ----------> 2Fe₂O₃
Molecular mass of 3O₂: 3(16 x 2) = 96 g
Molecular mass of 4Fe: 4(56) = 224 g
96 g of O₂ ---requires--------> 224 g of Fe
30 g of O₂ -------requires--------->? Fe
= (30 x 224) / 96
= 70 g
Therefore, the mass of iron needed to react with the oxygen is 70 g.
Answer:
the sun is the ultimate source of energy for everything in the food web