The mass, in grams, of hydrogen that would be produced from the reaction will be 0.102 grams
<h3>Stoichiometric calculations</h3>
From the balanced equation of the reaction:
The mole ration of magnesium to water is 1:2.
Mole of 4.73 grams Mg = 4.73/24.3 = 0.195 moles
Mole of 1.83 grams water = 1.83/18 = 0.102 moles
Hence, water is limiting.
Mole ratio of water to the hydrogen produced = 2:1
Equivalent mole of hydrogen gas produced = 0.102/2 = 0.05 moles
Mass of 0.05 moles hydrogen gas = 0.05 x 2 = 0.102 grams
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Answer:
Atom then element
Explanation:
Scientists once thought the most fundamental building block of matter was a particle called the atom. Now we know that the atom is made of many smaller pieces, known as subatomic particles. Every atom contains a central core called the nucleus, made of particles called protons and neutrons.
An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance.
The units we use are cube 3 and square 2
Answer:
An archer's stretched bow.
Explanation:
Elastic potential energy is energy stored as a result of applying a force to deform an elastic object.
25 g NaCl x 1 mols NaCl/58.44 g NaCl = 0.4278 mols
sig figs: 0.43 mols of NaCl
molar mass of NaCl : 58.44 grams make sure to use 2 decimal places for the mass
