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In chemical formulas, a subscript number signifies the number of atoms of the specified element in a molecule. For example, H2O (where the "2" is subscript) is the formula for water and represents 2 hydrogen atoms combined with 1 atom of oxygen.
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How do you do the crossover method for calcium hydride?
The calcium ion is Ca2+ and the hydride ion is H-. So, the subscript for the Ca is 1 and the subscript for H is 2. The formula unit is CaH2. The subscript 1 for Ca is not written. When there is no subscript it is understood to be 1.
In the equation 2 H2 plus O2 the H2 molecules are?
H is the atomic symbol for hydrogen, the 2 subscript means it is diatomic.
How is Hf related to the H of a reaction?
The Hreaction is the difference between Hf, products and Hf, reactants
What do both the 2 and 3 mean in the formula 3H2O?
The 3 means there are 3 molecules of H2O (water), and the 2 is a subscript and means there are 2 atoms of hydrogen (H) in one molecule.
What is the difference in electronegativity between H and F in HF?
The electronegativities of F and H are respectively 3.98 and 2.1, and the difference is 1.88
What is a example of molecule?
H(subscript 2)O
How do you do the crossover method for calcium hydride?
The calcium ion is Ca2+ and the hydride ion is H-. So, the subscript for the Ca is 1 and the subscript for H is 2. The formula unit is CaH2. The subscript 1 for Ca is not written. When there is no subscript it is understood to be 1.
What does H plus Mg equal?
H2Mg the 2 is a subscript though.
What is the difference between h and o?
The difference between h and o is that h has a hu sound o has an oh or an oo sound.
In the equation 2 H2 plus O2 the H2 molecules are?
H is the atomic symbol for hydrogen, the 2 subscript means it is diatomic.
Why does the oxygen symbol O not have a subscript?
Because symbols for the elements do not have subscripts. A subscript is added in the chemical formula of a compound to indicate how many atoms of the element are included in a molecule of the compound. For example, when hydrogen (H) and oxygen (O) combine to form water (H2O), a subscript 2 is added to the H to indicate there are two hydrogen atoms in a molecule of water, but no subscript is added to the O, because there is only one oxygen atom is in a molecule of water.
How is Hf related to the H of a reaction?
The Hreaction is the difference between Hf, products and Hf, reactants
What is difference between S Typhi O and S Typhi H?
There is a great difference between S Typhi O and H. The S Typhi O is somatic, and H is flagella.
The difference between H and C in car?
h is hot and c is cold
What is the difference between (-h)2 and -h2 in maths?
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What is the difference in electronegativity between H and F in HF?
The electronegativities of F and H are respectively 3.98 and 2.1, and the difference is 1.88
What do both the 2 and 3 mean in the formula 3H2O?
The 3 means there are 3 molecules of H2O (water), and the 2 is a subscript and means there are 2 atoms of hydrogen (H) in one molecule.
