Given :
15 g of potassium react with water .
To Find :
How much potassium hydroxide and hydrogen gas will be produced by the chemical reaction .
Solution :
Balanced chemical equation is given by :
Number of moles of potassium are :
From the chemical equation we can see that 1 mole of potassium produce 2 moles of KOH and 1 mole .
So , 0.38 mole of potassium will produce :
Mass of KOH produced , .
Mass of produced , .
Therefore , mass of potassium hydroxide and hydrogen gas produced is 42.56 g and 0.76 g respectively .
Tin is an element called Stannum and has the symbol Sn. Molar mass is the mass of 1 mol of a compound, 1 mol of any substance is made of 6.022 x 10²³ units, these units could be atoms making up an element or molecules making up a compound.
While the number of atoms making up 1 mol is the same for any element, the weight of 1 mol of substance varies from one another.
In tin(Sn) molar mass - 118.71 g/mol
In 118.71 g - there's 1 mol of tin
therefore in 37.6 g of tin - 1 x 37.6 / 118.71 = 0.31 mol
In 37.6 g of tin, there's 0.31 mol
Answer:
the action or power of focusing one's attention or mental effort.
Explanation:
Keyword: <em>Focus </em>
Answer:
Answer is C
Explanation:
All the variables can affect the results in an experiment
Answer:
C) CH4 (g) + O2 (g)→ CO2 (g) + H2O (g)
Explanation:
Methane burns in the presence of air to give carbondioxide and water.
Also, All Alkanes combust in the presence of Oxygen to give carbondioxide and water.