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omeli [17]
3 years ago
8

Which substance is most likely a lipid? -long chains of molecules composed of carbon, hydrogen, and oxygen atoms -compounds that

are composed of amino acids and atoms, such as nitrogen, that are joined together by peptide bonds -a nonpolar organic compound that is insoluble in water -a molecule that constitutes the building blocks of more complex molecules that are soluble in water
Chemistry
1 answer:
gulaghasi [49]3 years ago
3 0

Answer:

The answer is

Explanation:

- A nonpolar organic compound that is insoluble in water

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How many molecules of O2 are present in a 3.90L flask at a temperature of 273K and a pressure of 1.00atm?
Lisa [10]

Based on the ideal gas relation:

PV = nRT

where P = pressure ; V = volume ; T = temperature

n = number of moles; R = gas constant = 0.0821 L atm/mol-K

Step 1: Find the number of moles of O2

n = PV/RT = 1 * 3.90/0.0821*273 = 0.1740 moles

Step 2: Calculate the molecules of O2

Now, 1 mole of O2 corresponds to 6.023 * 10²³ molecules of O2

Therefore, 0.1740 moles of O2 corresponds to-

0.1740 moles of O2 * 6.023*10²³ molecules of O2/1 mole of O2

= 1.048 * 10²³ molecules of O2

4 0
2 years ago
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Answer:

Hcl

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3 years ago
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Answer:

Explanation:

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7 0
3 years ago
Balance this redox reaction occurring in acidic media:
Lelu [443]
Add 7 water atom to the right hand side to adjust the quantity of oxygen. Increase Cr(+3) by two to adjust the quantity of Cr. Duplicate Cl-by two to adjust the quantity of chlorine molecules. 
Cr2O7[2-](aq) +2 Cl[-](aq) < - >2 Cr[3+] (aq) + Cl2(g)+7H2O 
Presently adjust that charges. 
you have - 4 charges on the left hand side, while +18 charges on the right hand side, there for include 14H+ the left hand side to adjust the charges 
Cr2O7[2-](aq) +2 Cl[-](aq)+14H+ < - >2 Cr[3+] (aq) + Cl2(g)+7H2O 
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