1 mole of helium weighs 4.0026 g
So. 18.8 of helium will weigh 75.25 g
The percent, by weight of 17g of sucrose in 188g of water is calculated as follows Mass of Sucrose / Total Mass of Solution *100% = 17 / (188 + 17) * 100 = 8.29%
Sodium Carbonate + Sulfuric acid ------> Sodium Sulfate + Water + Carbon Dioxide Na2CO3 + H2SO4 ------> Na2SO4 + H2O + CO2 1 : 1 : 1 : 1 : 1 1 mole of na2co3 will react with h2so4
188
Radon Remmember to find neutrons you subtract mass number from atomic number. Mass is 222 Atomic Number is 86 222-86= 136....136 neutrons Radon Remmember to find neutrons you subtract mass number from atomic number. Mass is 222 Atomic Number is 86 222-86= 136....136 neutrons
7.4016 in Algebraic Steps / Dimensional Analysis Formula 188 mm*1 cm 10 mm*1 in 2.54 cm=7.401574803 in Direct Conversion Formula 188 mm*1 in 25.4 mm=7.401574803 in
1.88 mol Zn ( 6.022 X10^23/1mol Zn ) = 1.13 X10^24 atoms.
This is an incomplete question for several reasons. Iron bromide can be FeBr2 or FeBr3 and this will influence the answer. Also, in order to precipitate silver bromide, one would add silver nitrate, but it isn't stated how much silver nitrate is used. Assuming FeBr2 is used, and there is excess AgNO3, then .... 2AgNO3 + FeBr2 ----> 2AgBr(s) + Fe(NO3) moles FeBr2 = 2.96 g x 1 mol/216 g = 0.0137 moles moles AgBr produced = 2 x 0.0137 = 0.0274 moles mass AgBr produced = 0.0274 moles x 188 g/mole = 5.15 grams <---answer
112 neutrons
188 milliliters (ml) is equal to 188 milligrams (mg). They have the same numerical value because both milliliters and milligrams are metric units of measurement, but they measure different properties. Milliliters measure volume, while milligrams measure mass. So, in this case, 188 ml is equivalent to 188 mg.
376
60% of 188= 60% * 188= 0.6 * 188= 112.8
564
20% of $188 = (188/100)*20 = $37.620% off $188 = (188-37.6) = $150.4
188% = 188/100 = 47/25
188 of 240 is 78% n 240 of 188 is 127%
188% = = 188/100 and 47/25. It reduces to 122/25As a decimal, 188% = 1.88
188