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3 years ago

Which of the following is an example of a man-made polymer?

Chemistry

2 answers:

Natalka [10]3 years ago

7 0

Answer:

c) Polyester

Explanation:

Jobisdone [24]3 years ago

4 0

Polyester is man made synthetic fiber

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If 0.05 mol of I2 were actually produced in a reaction starting with 15 grams of CO what is the percent yield of I2

Andrew [12]

Answer:

6.2

Explanation:

<h2>I AM SMOooOooOooORT</h2><h2 /><h2>no but really trust the process</h2><h2 />

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3 years ago

Imagine that you could dive deep into the Atlantic Ocean where the South American plate and African plate meet at a plate bounda

Alex787 [66]

Answer:

At the plate boundary, there would be a divergent boundary where we can see a mid ocean ridge and a gap. We would be able to see the mantle because there would be a fissure from where magma will rise and solidify.

Explanation:

Under the South American plate and African plate, there are currents that cause a divergent boundary. They create this boundary since they pull the tectonic plates apart, causing a mid-ocean ridge with an opening that allows the rising of the magma that was underneath. Once that the magma is out, it solidifies, and the currents will try to create another ridge to repeat the process.

When the plates are apart, the mantle that is beneath is exposed, and we can see the magma.

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3 years ago

How many meters did the bus travel in 4.5 minutes

sertanlavr [38]

Answer:

Using the graph, we can see that after 4.5 minutes, the bus traveled 4500 meters. Find 4.5 on the x axis, and then see what y value it corresponds to.

Let me know if this helps!

3 0

3 years ago

Read 2 more answers

Commercially available aqueous nitric acid has a density of 1.42 g/mL and a concentration of 16 M. Calculate the mass percent of

luda_lava [24]

Answer:

The mass % of HNO3 in the solution is 71.0 %

Explanation:

Step 1: Data given

Density of HNO3 = 1.42 g/mL

Concentration = 16 M = 16 mol /L

Molar mass HNO3 = 63.01 g/mol

Assume the volume = 1L or 1000 mL

Step 2: Calculate mass of the solution

Mass = density * volume

Mass = 1.42 g/mL * 1000 mL

Mass = 1420 grams

Step 3: Calculate moles HNO3

Moles = molarity * volume

Moles = 16 M * 1L

Moles = 16 moles

Step 4: Calculate mass HNO3

Mass HNO3 = moles * molar mass

Mass HNO3 = 16.0 moles * 63.01 g/mol

Mass HNO3 = 1008.16 grams

Step 5: Calculate the mass percent

mass % = (1008.16 grams / 1420 grams) *100%

mass % = 71.0 %

The mass % of HNO3 in the solution is 71.0 %

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3 years ago

How do you identify an acid from its chemical formula

Usimov [2.4K]

First find the names of the acids end in “acid”. Acid formulas have one of these forms: HX(aq) or HaXbOc then find the Ionic compounds that contain hydroxide. (OH-) , carbonate (CO32-) , or hydrogen carbonate (HCO3-) anions are basic.

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3 years ago