According to the valence number of copper(2+) and the same value for chlorine (1-) copper (II) chloride has the formula of CuCl2
The molar mass of copper is 0,0635 kg/mole and chlorine gas a molar mass of 0,035 kg/mole the compound will have a molar mass of ( 0,0635+2×0,035 )kg/mole=0,099kg/mole and 0,344 moles are equivalent in mass to 0,344×0,135 kg=0,046 kg
Answer:
1. (1,10) 2. (2,-3) 3. (3,3)
-8r^5+23r^3-11r+17
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Answer:

Step-by-step explanation:
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The answer is 1. This is because 5 is a prime number, so the only factors are 1 and 5. 5 is not a factor of 2.