look good w small changes below:
Answer:
AB is an ionic compound. The electronegativity difference between A and B is greater.
AC is an ionic compound. The electronegativity difference between A and C is greater.
BC is a covalent compound because the electronegativity difference between C and B is small.
everything else look good!
Their cells have a nucleus and membrane-bound organelles.
Answer:
The value of partial pressure of oxygen 
= 83.66 K pa
Explanation:
Volume of oxygen = 80 liters
Temperature = 50°c
The total pressure = 96 K pa
The partial pressure of water at 50°c is calculated from the tables.
= 12.344 K pa
The total pressure is given by
Put all the values in the above equation we get
96 = 12.344 +
96 - 12.344
= 83.66 K pa
This is the value of partial pressure of oxygen.
Answer:
Molecules are made of two or more atoms
Molecules are made of atoms of the same element or different elements.
Molecules range in size.
Explanation:
A molecule is formed whenever two or more atoms combine. Hence we can define a molecule as a combination of two or more elements that are combined chemically and can not be separated by any physical means.
Molecules may be composed of the same atoms as in O2, F2 etc or different atoms as in CO2, H2O, etc.
The sizes of molecules differ. Some molecules are quite small in size while others are quite large in size.
Convert the mass to moles .
85.1 g ÷ 20.18 g/mol = 4.21704658
convert the moles to molecules
4.2170 mol × 6.022^23 molecules/mol = 2.539^24
