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Reika [66]
3 years ago
5

What are insulated foam cups most likely made out of? polyethylene polystyrene nylon thread vulcanized rubber

Chemistry
2 answers:
Solnce55 [7]3 years ago
6 0

Answer:b

Explanation:I d the

tankabanditka [31]3 years ago
3 0

Answer is: polystyrene.

Expanded polystyrene is used to manufacture foam cups.

Polystyrene production is several million tonnes per year.

Polystyrene is a synthetic aromatic hydrocarbon polymer made from the monomer styrene.

Styrene (ethenylbenzene) is an organic compound with the chemical formula C₆H₅CH=CH₂. It is a colorless oily liquid.

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The complete balanced equation for the reaction between zinc hydroxide and<br> acetic acid is
kicyunya [14]

Answer:

Zn(OH)2 + 2CH3COOH -----> Zn(CH3COO)2 + 2H2O

Explanation:

Zn(OH)2 + 2CH3COOH -----> Zn(CH3COO)2 + 2H2O

7 0
3 years ago
What are giant piles of mining waste called?
weqwewe [10]
The giant piles of mining waste called tailings. These wastes consists of ground rock and process effluents from a mining plant. These wastes are stored on a surface either in a facility or in the form of piles. Also, sometimes it is stored underground in areas that are mined out.
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3 years ago
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Which is the best indicator for giving a color change at the equivalence point?
agasfer [191]
There are different types of indicators for different neutralization reactions. The best indicator for giving a colour change at the equivalence point of a neutralization reaction depending on the pH range of a particular indicator and the equivalence point of the reaction. For instance, the best indicator for a neutralization reaction that involve the titration of NaOH with an acid which result in 9.00 equivalence point is phenolphtalein. This is because the equivalence point which is 9.00 is within the pH range of the indicator, which is between 8.0 to 10.1.
3 0
3 years ago
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NEED HELP ASAP!!!!!! <br> describe the two different types of solids.<br> in ur own words
Rudiy27

Answer:

crystalline and amorphous.

Explanation:

Crystalline solids are the most common type of solid, they are characterized by a regular crystalline organization of atoms that confer a long-range order, Amorphous, or non-crystalline, solids lack the long-range order

8 0
2 years ago
Magnesium + oxygen → magnesium oxide [2 mg + o2 → 2 mgo] is an example of:
Levart [38]
All masses are conserved, so mass of Mg + mass of O has to be total mass of MgO.<span>9.72 g Mg + mass of O = 16.12 g MgO </span>
<span>Therefore, mass of O = 6.4 g"</span>
4 0
3 years ago
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