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3 years ago

Which substance is a polymer found in nature? carpet cotton paint nylon

Chemistry

2 answers:

emmasim [6.3K]3 years ago

5 0

Answer:

cotton

Explanation:

Somebody already answered this lol but i also need points

11Alexandr11 [23.1K]3 years ago

3 0

Answer:

Cotton

Explanation:

I need more points

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Define Triple point of water?

Ilia_Sergeevich [38]

<h2>Hey There!</h2><h2>_____________________________________</h2><h2>Answer:</h2><h2>_____________________________________</h2><h2>TRIPLE POINT:</h2>

Triple point is that temperature, at which the substance is found in all three states i.e. solid, liquid and gas. Every substance has different triple point, because Triple point is just above the freezing point and each substance has different freezing and boiling point.

<h2>_____________________________________</h2><h2>WATER:</h2>

Water has a Melting point or Freezing Point (MP or FP) of $0^0$ C or 273K and Boiling point (BP) $100^{0}$ C or 373 K. Since the triple point is just above the MP or FP thus Triple Point of water is $0.01^{0}$ C or 273.16K.

<h2>_____________________________________</h2><h2>Best Regards,</h2><h2>'Borz'</h2><h2 />

6 0

3 years ago

Read 2 more answers

A 2.00 g sample of a bromine oxide (brxoy) is converted to 2.94 g of agbr. all the bromine in the original oxide compound ends u

qwelly [4]

In comparing two isotopes of the same element, the atomic number, stays the same.

Allow me to explain: The protons in an isotope ALWAYS stays the same, but the neutrons change. But, what's the atomic number made up of?

Protons, which means it won't change.

However, the atomic mass is made up of neutrons + protons, so only the atomic mass would change - not the atomic number.

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3 years ago

A laboratory technician needs to prepare 500 milliliters of a 2 M solution of sodium hydroxide (NaOH) in a flask. The flask has

Marat540 [252]

Answer:

40 g NaOH

Step-by-step explanation:x

To make 500 mL of a 2 mol·L⁻¹ solution, the technician must measure the correct mass of NaOH.

Step 1. Calculate the <em>moles of NaOH </em>

c = n/V Multiply both sides by V

n = Vc

c = 2 mol·L⁻¹

V =0.5 L

n = 0.5 × 2

n = 1 mol NaOH

Step 2. Calculate the <em>mass of NaOH </em>

The molar mass of NaOH is 40.00 g/mol.

m = 1 × 40.00/1

m = <em>40 g NaOH </em>

The technician must measure <em>40 g of NaOH</em>.

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4 years ago

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The concentration of Pb²⁺ in a sample of wastewater is to be determined by using gravimetric analysis. To a 100.0-mL sample of t

svetoff [14.1K]

Answer:

0.005404 M

Explanation:

$Pb^{2+}(aq) + Na_{2}CO_{3}(aq) ---> PbCO_{3}(s) + 2Na^{+}(aq)$

Since you added an excess of sodium carbonate you warrantied that all the $Pb^{+2}$ in the sample reacted with it. So we can say that the insoluble lead (II) carbonate $PbCO_{3}$ contains all the $Pb^{+2}$ ions in the original sample.