Answer:
92 is that atomic number and 238.03 is the atomic mass number
Explanation:
The structure of the atom is given as:
⁹²₂₃₈.₀₃U
The number 92 is the atomic number of the atom.
The atomic number is the number of protons within an atom. This number defines the nature and type of atom that we have.
238.03 is the atomic mass number;
The is the number of protons and neutrons within an atom. It is typically the mass of nucleus.
1.icosahedralb2.helicalc3.complexa
Answer:
1. The energy escapes your home and heats the outside.
Explanation:
Answer:
Molecular compound and ionic compound
Explanation:
Molecular compounds include a prefix on the first and second elements and a suffix on the second element, whereas Ionic compounds do not have prefixes and only include a suffix on the second element.
Answer:
0.077 M
Explanation:
Data Given :
The concentration of half normal (NaCl) saline = 0.45g / 100 g
So,
Volume of Solution = 100 g = 100 mL
Volume of Solution in Liter = 100 mL / 1000
Volume of Solution = 0.1 L
molar mass of NaCl = 58.44 g/mol
Molarity:
Molarity is the representation of the solution. It is amount of solute in moles per liter of solution and represented by M
Formula used for Molarity
M = moles of solute / Liter of solution . . . . . . . . . . (1)
Now to find number of moles of Nacl
no. of moles of NaCl = mass of NaCl / molar mass
no. of moles of NaCl = 0.45g / 58.44 g/mol
no. of moles of NaCl = 0.0077 g
Put values in the eq (1)
M = moles of solute / Liter of solution . . . . . . . . . . (1)
M = 0.0077 g / 0.1 L
M = 0.077 M
So the molarity of half-normal saline solution (0.45% NaCl) = 0.077 M
