Explanation:
Air has a heat capacity of about 700 Joules per kg per °K and a density of just 1.2 kg/m3, so its initial energy would be 700 x 1 x 1.2 x 293 = 246,120 Joules
You will know when the solid has formed a solution with water when you can't see any part of the solid left.
Explanation:
calcium ion is denoted as - Ca ²⁺
The number of electrons in a neutral atom of calcium = 20 , but since ,
it is charged atom ,
i.e. +2 , the number of electrons in calcium ion = 18 .
From , the question ,
The mass number = 41 ,
and
since ,
the mass number = number of protons + number of neutrons .
number of neutrons = mass number - number of protons
since ,
The number of protons for calcium ion = 20
number of neutrons = 41 - 20 = 21
Hence ,
number of neutrons = 21.
In scientific notation, the measurement of each figure to three significant measurements are as follows:
- 87.073 meters = 8.71 × 10⁻¹ meters
- 4.3621 × 10⁸ meters = 4.36 × 10⁸ meters
- 0.01552 meter = 1.55 × 10² meters
- 9009 meters = 9.01 × 10² meters
- 1.7777 x 10-3 m = 1.78 × 10⁻³ meters
- 629.55 meters = 6.30 × 10² meters
A significant figure is the digits in a number that is dependable and absolutely essential to express the quantity of a figure in positional notation. They are utilized to represent the appropriate degree of precision.
A scientific notation is used to express a large number in an easy decimal way multiplied by its power of 10.
From the given information, in scientific notation, and to three significant figures, we have:
- 87.073 meters = 8.71 × 10⁻¹ meters
- 4.3621 × 10⁸ meters = 4.36 × 10⁸ meters
- 0.01552 meter = 1.55 × 10² meters
- 9009 meters = 9.01 × 10² meters
- 1.7777 x 10-3 m = 1.78 × 10⁻³ meters
- 629.55 meters = 6.30 × 10² meters
Therefore, from the above concept, we can conclude that the scientific notation of each figure in three significant figures is shown in bold format.
Learn more about scientific notation here:
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