Answer: 0.99 grams of chlorine gas is produced by the reaction of 3.3g of ammonium perchlorate
Explanation:
To calculate the moles, we use the equation:
The decomposition of ammonium perchlorate is :
According to stoichiometry :
2 moles of produce = 1 mole of
Thus 0.028 moles of produce= of
Mass of
Thus 0.99 grams of chlorine gas is produced by the reaction of 3.3g of ammonium perchlorate
Answer:
Glaciers.
Explanation:
Glaciers are masses of ice that forms in mountainous areas.
H= energy of product minus energy of reactant
H is endothermic and positive when heat is absorbed
H is exothermic and negative when heat is released
You forgot to attach the diagram but I have an idea of what it might look like. So since the energy of reactant is at a lower level and energy of product is at a higher level, the reaction will be positive.
Answer: C. The difference of the energy of the reactants and the energy of the products.
Answer:
- Option <u><em>d) isotope</em></u>.
Explanation:
All atoms of a same element have equal number of protons (atomic number) but <em>may</em> <em>differ in the number of neutrons.</em>
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The atoms that differ in the number of neutrons are named<em> isotopes</em>.
For example: carbon-12 and carbon-13 are diferent isotopes of the same element, carbon. They have the same number of protons (6, which is the atomic number of carbon). On the other hand, while carbon-12 has 6 neutrons, carbon-13 has 7 neutrons.
As per the other choices:
- a) <em>anions</em> are ions with negative charges: atoms (or group of atoms) that have gained one or more electrons.
- b) <em>cations</em> are ions with positive charge: atoms (or group of atoms) that have lost one or more electrons.
- e) <em>atoms</em> are the individual minimum parts of an element that preserves the properties of such element. All atoms of the same element have the same number of protons and have, essentially, the same chemical properties.