The size of a hydrogen atom is about 1.2×10^−10 m across. The size of an oxygen atom is 0.000000000152 m across. What is the difference between the sizes of these atoms in scientific notation?
To find the difference between the sizes of these atoms in scientific notation, we need to subtract the size of the hydrogen atom from the size of the oxygen atom.
Size of hydrogen atom: 1.2 × 10^(-10) m
Size of oxygen atom: 1.52 × 10^(-10) m
Now let's subtract the sizes:
1.52 × 10^(-10) m - 1.2 × 10^(-10) m = 0.32 × 10^(-10) m
Since 0.32 is between 0.1 and 1, we can rewrite it as 3.2 × 10^(-11), moving the decimal point one place to the left.
Therefore, the difference between the sizes of these atoms is 3.2 × 10^(-11) m.
A red blood cell has a bigger diameter than a platelet by 5.17×10^−6 m.
To find out how many more people live in China than in India, we need to subtract the population of India from the population of China.
China's population: 1.45 × 10^9
India's population: 1,400,000,000
To begin, let's convert India's population to scientific notation: 1,400,000,000 = 1.4 × 10^9
Now let's subtract the populations:
China's population - India's population = 1.45 × 10^9 - 1.4 × 10^9 = 0.05 × 10^9
Since 0.05 is between 0.1 and 1, we can rewrite it as 5 × 10^7, moving the decimal point one place to the left.
Therefore, there are 5 × 10^7 (or 50,000,000) more people living in China than in India.
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Platelets and red blood cells are components of the blood. A typical platelet and red blood cell have diameters of approximately 2.33×10^−6 m and 0.0000075 m, respectively. Which blood component has a bigger diameter, and approximately by how much?
To determine which blood component has a bigger diameter and by approximately how much, we need to compare the diameters of the platelet and red blood cell.
Diameter of platelet: 2.33 × 10^(-6) m
Diameter of red blood cell: 0.0000075 m
Let's compare the diameters:
2.33 × 10^(-6) m is equivalent to 2.33 × 10^(-6) m.
Since 0.0000075 is larger than 2.33 × 10^(-6), the red blood cell has a bigger diameter.
To calculate how much bigger it is, we can subtract the diameter of the platelet from the diameter of the red blood cell:
0.0000075 m - 2.33 × 10^(-6) m = 0.0000075 m - 0.00000233 m = 0.00000517 m
Therefore, the red blood cell has a diameter that is approximately 0.00000517 m bigger than the platelet.
Platelets and red blood cells are components of the blood. A typical platelet and red blood cell have diameters of approximately 2.33×10^−6 m and 0.0000075 m, respectively. Which blood component has a bigger diameter, and approximately by how much?
Responses
A platelet has a bigger diameter than a red blood cell by 5.17×10−6 m.
A platelet has a bigger diameter than a red blood cell by 5.17 times 10 superscript negative 6 baseline m.
A red blood cell has a bigger diameter than a platelet by 9.83×10−6 m.
A red blood cell has a bigger diameter than a platelet by 9.83 times 10 superscript negative 6 baseline m.
A platelet has a bigger diameter than a red blood cell by 9.83×10−6 m.
A platelet has a bigger diameter than a red blood cell by 9.83 times 10 superscript negative 6 baseline m.
A red blood cell has a bigger diameter than a platelet by 5.17×10^−6 m.
Subtract Numbers in Scientific Notation Quick Check
China and India are the most populous countries in the world. China’s population is approximately 1.45×10^9, while India’s population is approximately 1,400,000,000. How many more people live in China than in India?
Responses
5×107
5 times 10 superscript 7 baseline
5×109
5 times 10 superscript 9 baseline
5×1010
5 times 10 superscript 10 baseline
5×10^8
To find the difference between the sizes of these atoms, we need to subtract the size of the hydrogen atom from the size of the oxygen atom. Let's begin by converting both sizes to scientific notation.
The size of a hydrogen atom is given as 1.2×10^−10 m.
The size of an oxygen atom is given as 0.000000000152 m, which can be written as 1.52×10^-10 m.
Now, subtract the size of the hydrogen atom from the size of the oxygen atom:
1.52×10^-10 m - 1.2×10^−10 m = (1.52 - 1.2) × 10^-10 m = 0.32 × 10^-10 m.
In scientific notation, 0.32 × 10^-10 m can be simplified as 3.2 × 10^-11 m.
Therefore, the difference in sizes between the hydrogen and oxygen atoms is 3.2 × 10^-11 m.