Answer:
The answer is
<h2>2.0 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula
From the question
mass of block = 10 g
volume = final volume of water - initial volume of water
volume = 25 - 20 = 5
volume = 5 mL
The density of the block is
We have the final answer as
<h3>2.0 g/mL</h3>
Hope this helps you
Answer:
Mass = 40 g
Explanation:
Given data:
Mass of oxygen needed = ?
Mass of propane = 11 g
Solution:
Chemical equation:
C₃H₈ +5O₂ → 3CO₂ + 4H₂O
Number of moles of propane:
Number of moles = mass/molar mass
Number of moles = 11 g/ 44.1 g/mol
Number of moles = 0.25 mol
now we will compare the moles of propane and oxygen.
C₃H₈ : O₂
1 : 5
0.25 : 5/1×0.25 = 1.25 mol
Mass of oxygen needed:
Mass = number of moles × molar mass
Mass = 1.25 mol × 32 g/mol
Mass = 40 g
<span>The number of lone electron pairs on the central atom of molecule having a linear molecular geometry such as CIF2- is three (3). In studying chemistry, linear molecular geometry describes the geometry around a central atom bind to two other atoms or ligands placed to a bond-angle of 180 degrees.</span>
Answer:
yep.. I am wide awake here.
