Products made of plastic can last a very long time. Explain both the positive and negative effects of plastic being long-lasting. thank uuu

Because plastic products are durable, they can last for a long time. This makes them affordable because they do not have to be replaced often. On the other hand, the popular use of plastics means that many plastics are thrown away. Plastics litter the ocean, causing harm to marine birds and mammals. Plastic breaks down into plastic dust, which can last for up to a thousand years.

Because plastic products are durable, they can last for a long time. This makes them affordable because they do not have to be replaced often. On the other hand, the popular use of plastics means that many plastics are thrown away. Plastics litter the ocean, causing harm to marine birds and mammals. Plastic breaks down into plastic dust, which can last for up to a thousand years.

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Explanation:Plastic is he hardest material to break down with harm to sea life and land life they may be affordable but costly to the environment.

[Ca⁺²] = 0.0123 M

1234 ppm of CaCO₃

Explanation:

Ca(In)²⁺ + EDTA ⟶ Ca(EDTA)²⁺ + In

To solve this problem we need to keep in mind the definition of Molarity (moles/L) and parts per million (mg CaCO₃ / L water). First we calculate the moles of EDTA:

0.0450 M * 13.70 mL = 0.6165 mmol EDTA

Looking at the reaction we see that one mol of EDTA reacts with one mol of Ca(In)²⁺, so we have as well 0.6165 mmol Ca(In)²⁺ (which for this case is the same as Ca⁺²). We calculate the molarity of Ca⁺²:

[Ca⁺²] = 0.6165 mmol / 50 mL = 0.0123 M

For calculating the concentration in ppm, we use the moles of Ca⁺² and the molecular weight of CaCO₃ (100.09 g/mol):

0.6165 mmol Ca⁺² * * 100.09 mg/mmol = 61.70 mg CaCO₃

That is the mass of CaCO₃ present in 50 mL (or 0.05 L) of water, so the concentration in ppm is:

61.70 mg / 0.05 L = 1234 ppm