Answer:
KBr
Explanation
KBr is an ionic compound which have very high BP since they exist as 3D crystals
Methyl Bromide, CH3Br. is a covalent compound which have low BP since they exist as individual molecules
A structure diagram which completes the table of physical structures of the main functional groups is:
R'
|
C = O
|
R
<h3>What is a ketone?</h3>
A ketone can be defined as a class of organic compound that typically comprises a carbonyl group in which an atom of carbon (C) is covalently bonded to an atom of oxygen (O).
In this context, we can infer and logically deduce that a structure diagram which completes the table of physical structures of the main functional groups is as follows:
R'
|
C = O
|
R
Read more on ketone here: brainly.com/question/23792559
#SPJ1
Answer:
0.768 kg
Explanation:
Step 1: Given data
- Mass of ammonium nitrate (solute): 27.8 g
- Molality of the solution (m): 0.452 m
Step 2: Calculate the moles corresponding to 27.8 g of ammonium nitrate
The molar mass of ammonium nitrate is 80.04 g/mol.
Step 3: Calculate the mass of water
The molality is equal to the moles of solute divided by the kilograms of solvent (water).
A solution isn´t a pure substance.
a.solution
solution: a homogeneous molecular mixture of 2 or more substances.
Example of solutions: H2O +NaCl.; wine+ water, milk + water.
When mixing substances, in order to find the final temperature after mixing, it is important to remember that the energy released should be equal to the energy absorbed by the system. We calculate as follows:
Q1 = Q2
(mCΔT)1 = (mCΔT)2
100 ( 90 - T ) = 50 ( T - 10 )
T = 63.33 °C