Answer:
answers is - 3.568
I think this correct answer
The average atomic mass is calculated by the expression:
Average atomic mass = Σzₓ(Aₓ)
where zₓ is the relative abundance of an isotope and Aₓ is the atomic mass of the isotope.
We calculate the mass of the isotope as follows:
10.81 = .1980 (10.012938) + .8020 (x)
x = 11.00 -----------> mass of the isotope
Answer:
The volume occupied by given molecules of carbon dioxide at STP is 55.86 L.
Explanation:

Where:
N = Number of particles / atoms/ molecules
n = Number of moles
= Avogadro's number
We have:
N = 
n =?

n = 2.4909 moles
Using ideal gas equation:
PV = nRT
where,
P = Pressure of carbon dioxide gas =
(at STP)
V = Volume of carbon dioxide gas = ?
n = number of moles of carbon dioxide gas =2.4909 mol
R = Gas constant = 0.0821 L.atm/mol.K
T = Temperature of carbon dioxide gas = 273.15 K (at STP)
Putting values in above equation, we get:

V = 55.86 L
The volume occupied by given molecules of carbon dioxide at STP is 55.86 L.
Answer:
Three
Explanation:
Three hydrogen bonds are between guanine and cytosine base pairs
Hopefully, that helps!
Answer:
7.146
Explanation:
use the equilibrium equation