Density = mass/volume
If you have the density and volume of a substance, you can use this relationship to calculate the mass. Here, you have 149 milliliters of ethanol, and there are 0.789 grams of ethanol in every milliliter of ethanol. So the mass of 149 mL of ethanol can be obtained by multiplying: (0.789 g/mL)(149 mL) = 118 grams of ethanol.
Answer:
The strength of the field varies depending on its location around the magnet. The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole when compared with the south pole.
Explanation:
Should be 1.8L.
2 moles of hydrogen react with 1 mole of oxygen. If 2 moles of hydrogen is 3.6L, 1 mole of oxygen should be 1.8L.
Answer:
1-Butene
Explanation:
In the final reaction, the 
will<u> oxidize</u> the previous molecule to obtain the <u>butanoic acid</u>, therefore the previous molecule has to be <u>primary alcohol</u>: 1-Butanol. The 
/
reaction can produce <u>antimarkonikov alcohols</u> therefore the initial molecule has to be an <u>alkene</u>: the 1-Butene.
<u>To further explanations see the attached image.</u>
