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7nadin3 [17]
3 years ago
13

The figure shows a graph of Allison’s walk to school. She follows the black vectors to get to her school. Which if the following

best describes her walk?

Chemistry
1 answer:
Lubov Fominskaja [6]3 years ago
7 0

Answer:

Allison walks 5 blocks west and 3 blocks south.

Explanation:

Vectors have both magnitude and direction. The attached figure shows the graph of Allison’s walk to school. She follows the black vectors to get to her school.

The first vector on the horizontal axis points towards west and there are 5 blocks. Initially, she walks 5 blocks in west direction.

The second vector points in the negative vertical axis. It means that she walks  3 block in south direction.

Hence, the correct option is (D) i.e. Allison walks 5 blocks west and 3 blocks south.

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How many atoms of oxygen are present in 7.51 grams of<br> glycine with formula C₂H5O2N?
Blizzard [7]

1.205 × 10²³ atoms of oxygen will be present in 7.51 grams of glycine with formula C₂H5O2N. Details about number of atoms can be found below.

How to calculate number of atoms?

The number of atoms of a substance can be calculated by multiplying the number of moles of the substance by Avogadro's number.

However, the number of moles of oxygen in glycine can be calculated using the following expression:

Molar mass of C₂H5O2N = 75.07g/mol

Mass of oxygen in glycine = 32g/mol

Hence; 32/75.07 × 7.51 = 3.2grams of oxygen in glycine

Moles of oxygen = 3.2g ÷ 16g/mol = 0.2moles

Number of atoms of oxygen = 0.2 × 6.02 × 10²³ = 1.205 × 10²³ atoms

Therefore, 1.205 × 10²³ atoms of oxygen will be present in 7.51 grams of glycine with formula C₂H5O2N.

Learn more about number of atoms at: brainly.com/question/8834373

#SPJ1

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If the distance between 2 objects increased, what would happen to the force of gravity between them.
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