adding fractions calculator

Petroleum is a mixture of hydrocarbons. On combustion, it produces mainly carbon dioxide and water vapour. However, on incomplete combustion, they produce carbon monoxide, unburnt hydrocarbons etc. They also produce oxides of nitrogen. Petrol is an important fraction of petroleum used in..

1. Calcium hydroxide is used in the preparation of lime water. Lime water is a saturated solution of calcium hydroxide in water. 2. It is used to make milk of lime for white washing. When a small quantity of water is mixed with slaked lime, milk of lime paste is formed. It is used for white washi..

The unknown acid is dissolved in water and treated with a slight excess of ammonium hydroxide. The excess of ammonia is boiled off. To this sufficient quantity of silver nitrate is added when a white precipitate of silver salt is obtained. The precipitate is separated by filtration, wash..

When an acidic solution of HCl is added to a pure neutral solution of water, the concentration of [H 3 O + ] becomes larger than 1.0 x 10 - 7 mol L - 1 . The dissociation equilibrium of water shifts in the reverse direction (Le Chatelier's principle). The excess [OH - ] ions combine w..

Question: How can you prove that air is a mixture? Answer: a) The composition of air is variable. The composition varies from place to place and with altitude. For instance, at higher altitudes, there is less oxygen in the air. In industrial areas, due to the waste gases coming out of in..

Knowing all the other values on the right hand side MB can be calculated. Depression in freezing point is used to lower the freezing temperature of water and clear roads during severe winters. Depression in freezing point is also useful in antifreeze, which is used in the radiators of car..

Sometimes at the end points of the wire, some length is found under the metallic strips and as a result, in addition of length l 1 or (100 - l 1 ), some additional length should be added for accurate measurements. The resistance due to this additional length is called end resistance. If..

If you want to determine the solubility of a solid, say potassium nitrate in water, at any given temperature, this is how you should proceed: a) Take a clean dry evaporating dish, and find its weight, as accurately as possible. Let the weight of the empty evaporating dish be 'a' gm. b) Take a clea..

The fractional part of these materials which is submerged in water is numerically equal to their density in grams per cubic centimeter. As they float, some sink deeper than the others. Blocks which sink more displace more water than those that sink less. When the heights of the blocks abo..

The given data can be written in thermochemical equation form as: The required equation is: Multiplying equation (ii) by 2 and adding to equation (i) we get, Subtracting equation (iii) from the above equation we have..