Answer:
an oxygen atom with 8 electrons, 8 protons and 9 neutrons
Yes all living things are mad up of two or more cells
Answer:
0.153 moles of hydrogen.
B) Multiply 10 grams of Zn x (1 mol Zn/65.39 g)
Explanation:
Given data:
Mass of zinc = 10 g
Moles of hydrogen = ?
Solution:
Chemical equation:
Zn + 2HCl → ZnCl₂ + H₂
Number of moles of zinc:
Number of moles of zinc = mass/ molar mass
Number of moles of zinc = 10 g/ 65.4 g/mol
Number of moles of zinc = 0.153 mol
Now we will multiply the moles of Zn with hydrogen:
Zn : H₂
1 : 1
0.153 : 0.153
Hydrogen, oxygen, nitrogen, chlorine, fluorine, bromine, and iodine.
Answer:
64 mL.
Explanation:
From the question given above, the dimension of box is:
Dimension = 2 cm × 4 cm × 8 cm
Thus, the volume of the box is:
Volume = 2 cm × 4 cm × 8 cm
Volume = 64 cm³
Finally, we shall convert 64 cm³ to mL. This can be obtained as follow:
Recall:
1 cm³ = 1 mL
Therefore,
64 cm³ = 64 cm³ × 1 mL / 1 cm³
64 cm³ = 64 mL
Therefore, the volume of the box in millilitres (mL) is 64 mL.
