The reaction for equation is written as follows
2Cs (s) + 2H2O(l) = 2CsOH (aq) + H2 (g)
The mass of cesium is calculated as follows
Find the moles of H2 by use of ideal gas equation that is Pv = nRT
where n is the number of moles
n = PV/RT
P= 48.1 ml in liters = 48.1 /1000= 0.0481 l
T= 19 + 273.15 = 292.15K
P= 768mm hg
R (gas Constant)= 62.364 l.mmhg/k.mol
n= ( 768mmhg x0.0481 L) /( 62.364 L.mm hg/k.mol x 292.15k) = 2.028 x10^-3 moles
by use of mole ratio from reacting equation between Cs to H2 which is 2 :1 the moles of Cs is therefore = ( 2.028 x10^-3) x 2 = 4.05 x10^-3 moles
mass of cs is therefore = moles x molar mass of cs( 132.9g/mol)
=( 4.05 x10^-3)mol x 132.9 g/mol = 0.539 grams
Answer:
Cohesion
Explanation:
D. you're welcome
One of water's most distinctive properties is cohesion—that is, the tendency of water molecules to "stick" to one another. In plants, this cohesion results in columns of water that stretch through the plant's xylem (the vascular tissue responsible for the transport of water), from the roots all the way to the leaves.
Answer:
number 6 is A
Explanation:
because nothing eals has seeds
This is false, a compound does not have to contain both cations and anions if ions are present.
Answer:
C. The more niches in an ecosystem, the greater the biodiversity.
Explanation: