• We’re trying to inscribe a square inside of a circle
• If we bisect the square, we get two triangles with right angles
• Circle diameter = 1.4m = hypothenuse of triangles = 2 * radius
• 2r = r * sqrt(2) + r * sqrt(2)
• We want to know the value of r * sqrt(2) is since that’s one of the sides of the inscribed square
• (0.7) * sqrt(2) = 0.99 m = side of inscribed square
• 0.99m < 1 m side
• So we are just barely not able to cut a 1m sided square in a circle piece of tin with 1.4m diameter
Answer:
3.5n+6.4=42.5
-6.4=-6.4
3.5n=36.1
————— (divide)
3.5=3.5
n=36.1/3.5 or 10.314
Explanation:
I'm confused by the question... is the question what is the first step of solving this equation?? and if it is, your answer is correct. which is subtract 6.4 for both sides.
Given 30.00 ml of 0.10 m acetic acid and 50.00 ml of 0.100 m koh, the pH of the solution is 12.40
<h3>What is the pH of a substance?</h3>
This is the measure of the acidity or the basicity of an aqueous or liquidsolution.
The details that are contained in this question are:
Mole of CH3COOH = 0.1 M
Volume of CH3COOH = 30 mL
Mole of KOH = 0.1 M
Volume of KOH = 50 mL
mol of (CH3COOH) = 0.1 Mole * 30 mL = 3 mol
mol of (KOH) = 0.1 Mole * 50 mL = 5 mol
From the solution above,
mol of CH3COOH = 3 mol
mol of KOH = 5 mol
3 mol of both substances is going to react
excess KOH remaining = 5 - 3 = 2 mmol
Volume of both Solutions
= 30 + 50 = 80 mL
OH⁻ = 2/80
= 0.025 M
use:
pOH = -log [OH-]
= -log (0.025)
pOH = 1.602
PH = 14 - pOH
= 14 - 1.60
= 12.40
The calculated pH is therefore 12.40
Read more on pH here: brainly.com/question/22390063
Answer:
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Root hair cells are adapted by having a large surface area so they can absorb more water and minerals and have lots of mitochondria which release glucose during respiration which provides energy for active transport
I might be wrong
