What is the mass number of an atom containing 4 protons and 5 neutrons? How many total electrons would that neutral atom contain?
What is the element?
Will this element gain or lose electrons?
How many total electrons would an ion of that element have?
What is the charge on that ion (ex. +1, -1, +2, -2, etc.)?
Is this ion an anion or cation?
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What other element has the same number of electrons as the ion you have identified?

What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .

Part b: study of equilibrium on solubility: mg(oh)2(s) ⇌ mg2+(aq) + 2 oh–(aq) cloudy clear (pink) 7. a. b. 8. a. b. 9. 10. 11. 12. when adding concentrated hydrochloric acid, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 7a. you should indicate which ion was added to or removed from the equilibrium mixture. when adding edta, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 8a. you should indicate which ion was added to or removed from the equilibrium mixture. upon heating in which direction is the equilibrium shifting? upon cooling in which direction is the equilibrium shifting? is the forward reaction a. endothermic explain your answers to questions 9, 10, and 11. (l) left (r) right (l) left (r) right b. exothermic

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device