Chemistry
Chemistry, 07.09.2019 23:10, winnie45

Pettern of variation in the oxidation of b to ti

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Chemistry, 29.06.2019 18:30, ellisc7044
When an atom in a reactant loses electrons, what happens to its oxidation number? its oxidation number decre its oxidation number doubles its oxidation number incre its oxidation number increase its oxidation number stays the same
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Mathematics, 26.09.2019 22:30, dee024
For questions 1-3 determine whether the equation represents a direct variation. if it does, find the constant of variation. 1. 2 y = 5x +1 a. not a direct variation b. direct variation, constant of variation is 5/2 c. direct variation, constant of variation is 2/5 d. direct variation, constant of variation is 1 -2/5 2. -12x = 6y a. not a direct variation b. direct variation, constant of variation is 1/2 c. direct variation, constant of variation is 2 d. direct variation, constant of variation is -2 3. 7x -1.4y = 0 a. not a direct variation b. direct variation, constant variation is 1/2 c. direct variation, constant variation is 2 d. direct variation, constant variation is -2 for questions 4-6 suppose y varies directly with x. write a direct variation equation that relates x and y. 4. y= -10 when x =2 a. y= -5x b. y= -1/5x c. y= 5x d. y= 1/5 x 5. y= 7 1/2 when x=3 a. y= 3/2x b. y= 2/3x c. y= 5/2 d. y= 2/5 6. y=10.4 when x=4 a. y= 3.4x b. y= 3.8x c. y= 3.2x d. y= 2.6x for questions 7 and 8 for the data in the table, tell whether y varies directly with x. if it does, write an equation for the direct variation. 7. (x.y) (3, 5.4) (7, 12.6) (12, 21.6) a. not a direct variation b. direct variation, y= 1.8x c. direct variation, y= 4x d. direct variation, y= 5/9x 8. (x,y) (-2,1) (3,6) (8,11) a. not a direction variation b. direct variation, y=x c. direct variation, y=2x d. direct variation, y= -2x
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Chemistry, 08.11.2019 01:31, JamesLachoneus
In an ion, the sum of the oxidation states is equal to the overall ionic charge. note that the sign of the oxidation states and the number of atoms associated with each oxidation state must be considered. in oh-, for example, the oxygen atom has an oxidation state of 2 and the hydrogen atom has an oxidation state of +1, for a total of ( -2 ) + ( +1 ) = -1 (i) what is the oxidation state of each individual carbon atom in c2o4 2^- express the oxidation state numerically (e.g., +1). (ii) which element is reduced in this reaction? 2hcl+ 2kmno4 + 3h2c2o4 ? 6co2 +2mno2 + 2kcl + 4h2o
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