kinetic energy kkkkkkkkkk
C because it makes the most sense
The mass of bismuth carbonate that decomposed is 0.445 g
calculation
write the equation for reaction
that is Bi2(CO3)3 → Bi2O3 +3 CO2
find the moles of of CO2 formed
At STP 1 mole of a gas = 22.4 L
what about 50 Ml
convert the Ml to Liters = 50/1000= 0.05 L
moles of CO2 formed is therefore= 1 mole x 0.05 L/22.4 l =2.232 x10^-3 moles
by use of reacting ratio between Bi(CO3)3 to CO2 which is 1:3 the moles of Bi(CO3)3 is = 2.232 x10^-3 x1/3= 0.744 x10^-4 moles of Bi(CO3)3
mass of Bi(CO3)3 = molar mass x number of moles
mass= 0.744 x10^-4 moles x 597.99 g/mol = 0.445 grams
Answer:
The percentage of germanium in germatite is 6.0003%.
Explanation:
Mass of an ore of germanite = 1.00 grams
Mass of germanium chloride = 0.177 grams
Percentage of germanium in germanium chloride = 33.9%
Let the mass of germanium present in germanium chloride be x.
Percentage of an element in a compound:
x = 0.060003 grams
Percentage of germanium in an ore of germanite:
The percentage of germanium in germatite is 6.0003%.
Hydrogen gas
Acid + metal = salt and hydrogen gas