Answer:
<h3>The answer is 4.15 g/mL</h3>
Explanation:
The density of a substance can be found by using the formula
From the question
mass of object = 8.3 g
volume = final volume of water - initial volume of water
volume = 8 - 6 = 2 mL
So we have
We have the final answer as
<h3>4.15 g/mL</h3>
Hope this helps you
Answer:
Mass = 199.21 g
Explanation:
Given data:
Moles of HCl = 3.59 mol
Mass of CaCl₂ = ?
Solution:
Chemical equation:
2HCl + Ca(OH)₂ → CaCl₂ + 2H₂O
we will compare the moles of HCl with CaCl₂ from balanced chemical equation:
HCl : CaCl₂
2 : 1
3.59 : 1/2×3.59 = 1.795
3.59 moles of HCl will produced 1.795 moles of CaCl₂.
Mass of CaCl₂.
Mass = number of moles × molar mass
Mass = 1.795 mol × 110.98 g/mol
Mass = 199.21 g
Answer:
The mass is also half of the mass of the original piece
Explanation:
Recall that the volume of a substance is defined as mass/volume. The density of substances is a constant. Hence, if a break off a piece of cement or bread such that what remains is only half the volume of the original piece, the mass of the new piece must also reduce to half of the mass of the original piece so that the volume of the material will remain constant.
Hence the answer above.
