Answer:
²³⁵₉₂U
Explanation:
The nuclear symbol of the nuclei is ²³⁵₉₂U.
The uranium nuclei has;
mass number = 235
atomic number = 92
To write the structure of the atom;
The subscript before the symbol of the atom is the atomic number
The superscript is the mass number
So;
²³⁵₉₂U is the symbol of the nuclei.
Answer:
The final molarity of nitrate anion in the solution is 0.258 M.
Explanation:
Mass of barium nitrate 1.73 g
Moles of barium nitrate =
1 mole of barium nitrate gives 2 moles of nitrate ions,then 0.00662 mol of barium nitrate will give :
of nitrate ions
moles of nitrate ion added to the solution = 0.01324 mol
Molarity of the barium nitrate solution = 63.0 mM = 0.063 M
1 mM = 0.001 M
Volume of barium nitrate solution = 100 mL = 0.100 L
1 m L = 0.001 mL
Moles of barium nitrate in the solution = n
Moles of nitrate ion in solution = 2 0.0063 × mol = 0.0126 mol
Total moles og nitrate ions = 0.01324 mol + 0.0126 mol = 0.02584 mol
Final molarity of nitrate anion in the solution.:
The final molarity of nitrate anion in the solution is 0.258 M.
Answer:
Heat needed to increase the temperature by 50°C is 94 j.
Explanation:
Given data:
Specific heat of silver = 0.235 j/g.°C
Heat needed to increase temperature = ?
Mass of silver = 8 g
Temperature difference = ΔT= 50°C
Solution:
Formula:
q = mcΔT
c = specific heat capacity of substance
Now we will put the values i formula.
q = 8 g× 0.235 J/g.°C× 50°C
q = 94 J
Heat needed to increase the temperature by 50°C is 94 j.
The earth probably would still be Pangaea form. All the continents would still be combined, and the earth would look very different.