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:
to marine mammals shows that sirenians (dugong and manatees) have a trophic level of 2.0, while blue whales (which feed on large zooplankton—trophic level 2.2) are at trophic level 3.2 (¼1.
Explanation:
Answer:
Sodium and potassium ions moves against concentration gradient.
Explanation:
Sodium and potassium ions moves against concentration gradient.
Three sodium ions are exported and two potassium ions are imported, for every ATP that pump uses.
The sodium - potassium pumps help to maintain resting potential.
It also help to regulate the cellular volume
It also effects the transport.
It was discovered by Danish scientist Jens Christian in 1957.
He was awarded by Noble prize in 1997.
Answer:
a liter is larger, hope that helps :)
Answer:
V = 42.6 L
Explanation:
Given data:
Number of moles of Cl₂ = 1.9 mol
Temperature and pressure = standard
Volume occupy = ?
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
By putting values,
1 atm × V = 1.9 mol ×0.0821 atm.L /mol.K × 273.15 k
V = 42.6 atm.L / 1 atm
V = 42.6 L