Answer:
(x + 2)(x + 2)
Explanation:
You need 2 numbers that times to give 4 and add to give 4. So 2 and 2.
<span>1. Which variable is the independent variable and which is the dependent variable? Density vs. ethylene glycol
The independent variable would be ethylene glycol and dependent variable would be density.
A. A 25-mL volumetric flask with its stopper has a mass of 32.6341 g. The same flask filled to the line with ethylene glycol (C2H6O2, automotive antifreeze) solution has a mass of 58.0091 g. What is the density of the ethylene glycol solution?
Density = 58.0091 - 32.6341 / .025 = 1015 g/L
B. What is the molarity of the ethylene glycol solution, if the mass of ethylene glycol in the solution is 12.0439 g?
Molarity = 12.0439 ( 1 mol / 62.07 g) / 0.025 = 7.8 M</span>
Answer:
<h3>The answer is 8.98 g/cm³</h3>
Explanation:
The density of a substance can be found by using the formula
From the question
mass of cube = 150 g
volume = 16.7 cm³
We have
We have the final answer as
<h3>8.98 g/cm³</h3>
Hope this helps you
<h3><u>Answer</u>;</h3>
B) Al2O3
<h3><u>Explanation;</u></h3>
Aluminium reacts with oxygen to form aluminium oxide.
The chemical reaction for the reaction between Aluminium and Oxygen is;
4Al+ 3O₂→ 2Al₂O₃
Therefore;
Compound X is Aluminium oxide (Al₂O₃)
