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mackenziewright2002
06.10.2019 •
Chemistry
List the number of each type of atom on the left side of the equation 2c10h22(l)+31o2(g)→20co2(g)+22h2o(g)
enter your answers separated by commas (the order of the numbers is the same as the order of the elements on the left side of the equation).
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Ответ:
20, 44, 62
Explanation:
To find the number of atoms of each element, we multiply coefficient and subscript
For example
contains
5 × 1 = 5 ,Ca atoms and
5 × 2 = 10, Cl atoms
If there is a bracket in the chemical formula
For example![3Ca_3 (P_1 O_4 )_2](/tpl/images/0294/4381/0f318.png)
we multiply coefficient × subscript × number outside the bracket to find the number of atoms
(Please note: 3 is the coefficient, and if there is no number given then 1 will be the coefficient )
So
3 × 3 = 9 , Ca atoms
3 × 1 × 2 = 6, P atoms
3 × 4 × 2 = 24, O atoms are present.
So let us find the number of atoms of each element on the left side of the equation
Number of C atoms = 2 × 10 = 20
Number of H atoms = 2 × 22 = 44
Number of O atoms = 31 × 2 = 62
20, 44, 62 are the Answers.
Ответ:
Lm.ao last time you left
Explanation: