Plastic Identification Scientific Background
A student, who lives in Miami, picks up trash on the beach while volunteering for a service club. The student knows that any plastic items collected needs to melt within a range of 100 to 150 degrees Celsius in order to be recycled at a local recycling facility.

Writing Task
Write an explanation that determines the identity of the plastic and whether or not it is recyclable at the local recycling center.

In your essay, be sure to complete the following tasks:
- Calculate the density of the plastic trash and predict the density of the ocean water.
- Identify the plastic and predict if it would sink or float in the ocean.
- Create an argument about whether the plastic would be recyclable at the local recycling center.

(Documents A through D are related to this Writing Task.)

DOCUMENT A

Substance Letter
Identity
Density
A
Isopropyl Alcohol
0.8 g/mL
B
Water
1.0 g/mL
C
Ocean Water
?
D
Honey
1.4

DOCUMENT B

Volume of Water in the Graduated Cylinder
Before the plastic trash is added
100.0 mL
After the plastic trash is added
106.3 mL

DOCUMENT C

Mass of plastic piece
5.99 g

DOCUMENT D

Density Table of Types of Plastic

Substance
Density (g/mL)
PETE
1.39
HDPE
0.95
PVC
1.25
PP
0.91

DOCUMENT E

Type of Plastic
Melting Point
PETE
260oC
PP
160oC
HDPE
145oC
PVC
100oC

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

Consider the reaction: n2(g) + o2(g) ⇄ 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

Maleic acid is a carbon-hydrogen-oxygen compound used in dyeing and finishing fabrics and as a preservative of oils and fats.* in a combustion analysis, a 1.054-g sample of maleic acid yields 1.599 g of co_2 and 0.327 g of h2o.* when 0.609 g of maleic acid is dissolved in 25.00 g of glacial acetic acid, the freezing point drops by 0.82 c. maleic acid does not ionize in glacial acetic acid, which has a freezing-point depression constant of k_{\rm f}=3.90~^\circ {\rm c}/m.* in a titration experiment, a 0.4250- g sample of maleic acid is dissolved in water and requires 34.03 ml of 0.2152 m koh for its complete neutralization.* the ph of 0.215 g of maleic acid in 50.00 ml of aqueous solution is found to be 1.80.part adetermine the empirical formula for maleic acid. enter the atoms in order ofc, h, and o. part bdetermine the molecular formula for maleic acid. enter the atoms in order of c, h, and o. express your answer as a chemical formula. part cbased on the titration data, how many ionizable h atoms are in each molecule of maleic acid, c4h4o4? express your answer as an integer. i got the part a and b which is cho and c4h4o4 respectively, can anyone me for part c? the below is what i have so far from other qa'sfinding the empirical formula for maleic acid, needs this info"a combustion analysis a 1.054-g sample of maleic acid yields 1.599g of and 0.327g of ".the rest of your data is used to find molar mass, molecular formula, equivalent mass, # of h+ ions / molecule & katypically this should be: a 1.054-g sample of maleic acid yields 1.599g of co2 and 0.327g of h2osofind mass using molar masses1.599g of co2 @ (12.01 g carbon) / (44.01 g co2) = 0.436 grams of carbon0.327g of h2o @ (2.016 g hydrogen) / (18.01 g/mol h2o) = 0.037 grams of hydrogen1.054-g sample - 0.436 grams of carbon - 0.037 grams of hydrogen = 0.581 grams of oxygennow use molar masses to find moles0.436 grams of carbon @ 12.01 g/mol = 0.0363 mol c0.037 grams of hydrogen @ 1.008 g/mol = 0.0367 mol h0.581 grams of oxygen @ 16.00 g/mol = 0.0363 mol oyour empirical formula ischo and molecular is c4h4o4