0.761 mol of would you have if you have 76.36 grams.
<h3>What is a mole?</h3>
A mole is defined as 6.02214076 × of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
Given data:
Mass=76.36 grams
Moles = 0.761
Hence, 0.761 mol of would you have if you have 76.36 grams.
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Answer:
none of these are technically correct, but C. is closest? the energy from the sun is radiation, which does not need molecules to travel so its actually B. and C. together? poorly worded
Answer:
The molarity of the solution is 245, 2M.
Explanation:
We calculate the molarity, which is a concentration measure that indicates the moles of solute (in this case KCl03) in 1000ml of solution (1 liter):
0,25 L solution----- 61,3 moles of KCl03
1 L solution----x= (1 L solution x 61,3 moles of KCl03)/0,25 L solution
x=245, 2 moles of KCl03 --> <em>The molarity of the solution is 245, 2M</em>
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Answer:
Answer:
Balance the following equations. Enter 1 as a coefficient for reactants and products which have no coefficient.
(NH4)2Cr2O7(s) _> Cr2O3(s)+N2(g)+H2O(g)
Explanation:
MgF₂ has one magnesium ion and two fluoride ions per unit of magnesium fluoride. The percent mass of elements of MgF2 are 39.012 of Mg and 60.989 of F.
- Magnesium fluoride is a binary ionic compound. It is comprised of two fluorine and one magnesium atom. Since it is an ionic compound, it is made up of anions and cations.
- Magnesium is metal and has a much lower electronegativity than fluorine. Hence, this compound consists of two fluoride anions and a magnesium cation.
- Mass percent of an element in a compound ⇒
( mass of the elements/ molar mass of compound) × 100
Molar mass of MgF₂, is 62.301g/mol (24.305+2×18.998)
Mass Percent of Mg =( 24.305 / 62.301) × 100
= 39.012%
Mass percent of F = (18.998×2 / 62.301) ×100
= 60.989%
Thus we can conclude as :
Element Atomic Number of Atoms Mass Percent.
mass
Mg 24.305 1 39.012%
F 18.998 2 60.989%
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