33 - 15 = 18
This element is P-33
corrected question: A chemist adds 135mL of a 0.21M zinc nitrate solution to a reaction flask. Calculate the mass in grams of zinc nitrate the chemist has added to the flask. Round your answer to significant digits.
Answer:
5.37g
Explanation:
0.21M means ; 0.21mol/dm³
1dm³=1L , so we can say 0.21mol/L
if 0.21mol of Zinc nitrate is contained in 1L of water
x will be contained in 135mL of water
x= 0.21*135*10³/1
=0.02835moles
number of moles= mass/ molar mass
mass= number of moles *molar mas
molar mass of Zn(NO₃)₂=189.36 g/mol
mass= 0.02835 *189.36
mass=5.37g
Answer:
sweat glands
Explanation:
sweat glands are the only ones that can produce dermcidin, Nacl, urea and ammonia.
Answer:
Smallest to biggest order is as follows.
C < O < Amino < Water < Glucose < Starch < protein.
Explanation:
The given atoms or molecules and their atomic masses is as follows.
Glucose - 
- 180 g/mol
Starch - 
- 692.7 g/mol
Protein - 
- it is vary for different proteins.
Carbon - C - 12 g/mol
Water - 
- 18 g/mol
Amino - 
- 17 g/mol
Oxygen - O - 16 g/mol
Increase the molar mass increases size of the molecules.
Therefore, Smallest to biggest order is as follows.
C < O < Amino < Water < Glucose < Starch < protein.
