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tigry1 [53]
3 years ago
14

HURRY FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry
2 answers:
miss Akunina [59]3 years ago
8 0
B. The sand increases friction by increasing roughness.
Nat2105 [25]3 years ago
5 0

Answer:

B. The sand increases friction by increasing roughness.

  • Explanation: bc

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Materials are transported within a single celled organism by the
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The cytoplasm transports materials within a single celled organism. that is the answer.
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An experiment is designed to test what color of light will activate a photoelectric cell the best. The photocell is set in a cir
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The light intensity. The transparency of the filter, the bandwidth of the filter,  

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A class of substances known as __________ are used for their medicinal properties.
Misha Larkins [42]

Answer: Alkaloids

A class of substances known as alkaloids are used for their medicinal properties.

Explanation:

Alkaloids are small but complex organic substances with at least one nitrogen atom in its ring structure. Hence, they have strong basic properties, and are produced in naturally by some plants.

Examples of alkaloids and their medicinal properties are as follows:

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3 years ago
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A particle has 5 protons, 6 neutrons, and 5 electrons. What is its net charge.
Trava [24]
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4 0
3 years ago
What Element am I?
rjkz [21]

Answer:

The correct answer is - sulfur.

Explanation:

In the periodic table, there are 18 groups and 7 rows or periods arranged according to their atomic number or electronic configuration. In the question, it is mentioned that the desired element atomic mass is less than the atomic mass of the selenium which is 78.96, and more than oxygen which is 15.99 with 6 electron valence and present in the third row.

As it has 6 valency of electron it must be in the 16 group of the table that comprises the 6 valency and as it is located in the 3rd row it must be sulfur that also has an atomic mass between selenium and oxygen.

6 0
3 years ago
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