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kogti [31]
3 years ago
12

Where might you find products made from polystyrene

Chemistry
1 answer:
kobusy [5.1K]3 years ago
6 0
It can be cast into moulds with fine detail, for example yogurt cups, plastic cutlery and CD and DVD cases. Polystyrene can be transparent or can be made to take on various colours. Products made from foamed polystyrene are nearly everywhere, for example packing materials, insulation, and foam beverage cups.
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A neutral atom has a mass number of 108 and in atomic number of 47 which atom is this? explain how you know.
Colt1911 [192]
Mass number of Silver: The element Silver (Symbol Ag) has the Atomic Number of 47. The number of protons in atom of silver is therefore 47. Silver has the Atomic Mass weight of 107.87. Round to the nearest whole number. The mass number of silver is therefore 108.
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3 years ago
Which of the following was not a geological clue used to support the theory of continental drift
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The answer is:

D. Samples of ocean water.

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When water droplets in a cloud combine, become too heavy, and fall to the ground as rain, snow, sleet, or hail, we are experienc
tatiyna

Answer:

precipitation

Explanation:

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3 years ago
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Which of the following is not a natural
Morgarella [4.7K]

Answer:

cup...................

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3 years ago
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HELP!!!
vladimir2022 [97]

Answer:

2.5 × 10⁻⁵ M H₃O⁺ and 4.0 × 10⁻¹⁰ M OH⁻.

Explanation:

<em>∵ pH = - log[H₃O⁺]</em>

∴ 4.6 = - log[H₃O⁺].

∴ log[H₃O⁺] = - 4.6.

∴ [H₃O⁺] = 2.51 x 10⁻⁵.

∵ [H₃O⁺][OH⁻] = 10⁻¹⁴.

[H₃O⁺] = 2.51  x 10⁻⁵ M.

∴ [OH⁻] = 10⁻¹⁴/[H₃O⁺] = 10⁻¹⁴/(2.51  x 10⁻⁵ M) = 3.98 × 10⁻¹⁰ M ≅ 4.0 × 10⁻¹⁰ M.

<em>So, the right choice is: 2.5 × 10⁻⁵ M H₃O⁺ and 4.0 × 10⁻¹⁰ M OH⁻.</em>

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3 years ago
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