First lets calculate the moles of aluminum (molar mass is 27 gram/mol):
n = m/M = 14.9 / 27 = 0.551 mole of Al
According to the reaction between sulfuric acid and aluminum:
From 2 moles of aluminum ==> we get 3 moles of Hydrogen gas
so, let's do cross multiplication
0.551 ==> 0.551 * 3/2 = 0.83 mole of H2
So, from this reaction we got 0.83 mole of H2 gas
knowing that the molar mass of H2 is 2 gram/mol, the mass of the gas is.
m = n * M = 0.83 * 2 = 1.66 gram of H2
There are 0.109 moles of NaCl in one tablespoon of salt. This is found by dividing the number of grams you have by the molecular weight.
Correct answer: a. releasing CO2 that dissolves and forms acid in the oceans
The fuels used in automobiles release gases like carbon dioxide, carbon monoxide, oxides of nitrogen and sulfur. Carbon dioxide when dissolved in water forms carbonic acid. So, when the usage of cars is high, these emissions of carbon-dioxide into the atmosphere increase and this leads to the lowering of pH of the oceans as the carbon dioxide present in higher amounts in to atmosphere diffuses into the oceanic waters and form carbonic acid which makes the ocean slightly acidic.
Answer:
The correct answer is - C27H36N2O10.
Explanation:
C27H36N2O10 is the chemical formula of polyurethane foam which is a linear polymer manufactured by reacting polyols and diisocyanates. Polyurethane foam is used as a thermal insulator.
It used as filling material for various walls such as partition walls inside your house, determines the maintenance of proper insulation. It is not an acidic material that will dissolve easily. It is used not just as wall-filling material but also for sealer and filling in furniture and carpets.
According to the octet rule, atoms tend to gain, lose, or share electrons until they are surrounded by__8__ valence electrons.
