John McCann
John McCann answered Anonymous' question
Distance = Rate * Time Or, algebraically manipulated to our purpose..., and 1 and 2/3 miles changed to improper fraction..., (3 * 1 + 2)/3 = 5/3 miles ------ Rate = distance/time Rate =  5/3 miles divided by 50 minutes same as Rate = 5/3 miles * 1/50 minutes = 5/150 = 0.033 miles perRead more
John McCann
John McCann answered Rach ❤The Wanted❤'s question
I assume you mean STP. 6..5 g Zn (1 mole Zn/65.41 g)(1 mole H2/1 mole Zn) = 0.0994 moles H2 ------Now, PV = nRT (1.00 atmospheres)(X volume) = (0.0994 mole H2)(0.08206 L*atm/mol*K)(298.15 K) = 2.4 Liters volume H2 gas ======
John McCann
John McCann voted up Anonymous' answer
1-minimisation of domestic noise coming from radio , tape recorders , television sets , mixers , washing machine , etc.by thier selective and judicious use. 2-the usage of loudspeakers in the habitant zones should not be permitted. 3-noise pollution can be reduced to certain limit by fixation of silencers in automobiles. 4-reduction of excess noise … Read more
John McCann
John McCann voted up Oddman's answer
A dictionary definition is "one of two or more numbers, algebraic expressions, or the like, that when multiplied together produce a given product." That is the definition of the noun. Factor can also be a verb, in which case it means "resolve into factors." For example, we can factor the expression 2x^2 … Read more
John McCann
John McCann answered Anonymous' question
Sigh! Always me doing these!!! This will be rather long, so pay attention. Balanced equation. Ba(OH)2 + 2HCl --> BaCl2 + H2O Need moles both reactant species. Molarity = moles of solute/Liters of solution. ( 35.0 mL = 0.035 Liters and 25.0 mL = 0.025 Liters ) 0.846 M Ba(OH)2 = X moles/0.035 L = … Read more
John McCann
John McCann answered maria holmes' question
2 and 1/8 divided by 34 ? Change 2 and 1/8 to improper fraction (8*2+1)/8 = 17/8 17/8 divided by 34 same as 17/8 * 1/34 = 17/272 factor out a 17 17*1/17*16 as 17 appears in both numerator and denominator as a factor at least once it can be canceled 1/16 ====quotient
John McCann
John McCann answered Anonymous' question
I will assume you may mean this... (2X + 3)/(X + 7) = 5/3 multiply through by (X + 7) ( distribute the 5/3 to this ) 2X + 3 = (5/3)X + 35/3 (1/3)X + 3 = 35/3 (1/3)X = 26/3 X = 26 ====== The check shows 5/3, which is correct, but this … Read more