This problem is providing us with the percent composition of a compound containing magnesium, nitrogen, oxygen and water. Thus, the empirical formula is required and found to be Mg(NO₃)₂·6H₂O.
<h3>Empirical formulas</h3>
In chemistry, empirical formulas are used in order to figure out the minimum whole-number representation of a molecular formula, which contains the actual number of atoms.
Thus, we start determining it by assuming the given percentages as masses and calculating the moles with the atomic or molar mass of the involved species:
Next, we divide by the 0.386 as the smallest number of moles in order to determine their subscripts in the chemical formula:
Hence, the empirical formula turns out to be Mg(NO₃)₂·6H₂O, which is actually a hydrate (hexahydrate).
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Answer:
A
Explanation:
Carbon Dioxide creates what is known as the greenhouse effect, which traps heat for a few weeks.
Answer:
2, Argon PLEASE VOTE 5.0 MARK ME BRAINLIEST AND THANK ME
Explanation:
2,Argon because its only logic answer PLEASE VOTE 5.0 MARK ME BRAINLIEST AND THANK ME
Answer:
It leads to more frequent collisions, which increase reaction rate
Explanation:
An increase in reactant concentration leads to an increase in reactant particles which increases the number of collision in a reaction and then causes a reaction to proceed faster.
This belief was first suggested by the collision theory which states that for a reaction to occur, the reacting particles must collide with one another. However, further studies show that not all collisions lead to a reaction, and only effective collisions lead to a reaction.
Hence, an increase in reactant concentration increases the frequency of collision which in turn increases the chances of effective collision and subsequently sincreases the reaction rate.
The silane molecule has the shape of a regular tetrahedron. Four hydrogen atoms form the vertices of a tetrahedron. Silicon atom is located in the centre of the tetrahedron.