- 3x^3+8x^2+10x+3=0 How do we find the roots of this equation?

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Write the reaction between HBr and Ca(OH)2: What is the molarity of HBr of 35.00mL requires 20.00mL of 0.2500M Ca(OH)2? What element is being oxidized in the following redox reaction? Fe 2+(aq) + NH4 +(aq) → Fe(s) + NO3 -(aq)? Three moles of an ideal monatomic gas expand at a pressure of 2.20 atm ; the volume of the gas changes from 3.40×10−2 m3 to 4.60×10−2 m3 .? How many neutrons does Co3+ have????? *HELP!!*
How much of a 6.0 M acetic acid solution would be needed to make 500mL of a 1.0 M acetic acid solution?