Answer:
20% by mass means 20 g of the NaOH is dissolved in 100 g of solution. If that is what you mean.
Step-by-step explanation: What is the meaning of 20% mass by volume solution?
20% mass by volume means 20 g of the NaOH is dissolved in 100 mL of the solution.
Depends on the concentration terms meaning and values also changes.
Answer: 4,899,879 - 3,114,721 = 1,785,158
Step-by-step explanation:
See what you know and solve from there.
Answer:
Step-by-step explanation:
<u>We know that:</u>
- Perimeter of a rectangle = Sum of all its sides
- Length of rectangle = 4x² - x + 2
- Width of rectangle = 5x - 3
To find the perimeter, we need to use the equation "Perimeter of a rectangle = Sum of all its sides".
<u>Solution:</u>
- Perimeter of a rectangle = Sum of all its sides
- => 2[{4x² - x + 2} + {5x - 3}] = Perimeter
- => 2[4x² - x + 2 + 5x - 3] = Perimeter
- => 2[4x² + {-x + 5x} + {2 - 3}]
- => 2[4x² + 4x - 1]
- => 8x² + 8x - 2
Hence, the perimeter of the rectangle is 8x² + 8x - 2.
Since ABCD is a parallelogram, the opposite sides will be parallel and equal,
Consider that AC acts as a transversal to the parallel lines AB and CD, so we can write,
So by the ASA criteria, the triangle AED is congruent to the triangle CEB,
Then the corresponding parts of the triangles will be equal,
Hence Proved.