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n200080 [17]
3 years ago
7

Which of the following structures is NOT found in the respiratory system?

Chemistry
2 answers:
tamaranim1 [39]3 years ago
8 0
The answer is esophagus
bonufazy [111]3 years ago
6 0
Esophagus I tell you it's the esophagus
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Which of these elements have the strongest and the weakest forces between its atoms.Give A Reason For Your Answer. Copper,oxygen
fiasKO [112]

Answer:

Copper

Explanation:

Within intermolecular forces, ion-dipole is the strongest, followed by hydrogen bonding, then dipole-dipole, and then London dispersion.

4 0
2 years ago
35.0 grams of nitrogen gas reacts with 60.0 grams of hydrogen gas: N2 + 3H2--> 2NH3
Misha Larkins [42]

Explanation:

Moles of N2 = 35.0g / (28g/mol) = 1.25mol

Moles of H2 = 60.0g / (2g/mol) = 30.0mol

Since 1.25mol * 3 < 30.0mol, nitrogen is limiting.

Moles of NH3 = 1.25mol * 2 = 2.50mol.

Mass of NH3 = 2.50mol * (17g/mol) = 42.5g.

30.0mol - 1.25mol * 3 = 26.25mol.

Excess mass of H2

= 26.25mol * (2g/mol) = 52.5g.

6 0
3 years ago
calculate the volume (in mL) of 0.100 M CaCl2 needed to produce 1.00 g of CaCO3 (s). There is an excess of Na2CO3. Volume of cal
shepuryov [24]

Answer:

100. mL

Explanation:

Step 1: Write the balanced equation for the double displacement reaction

CaCl₂ + Na₂CO₃ ⇒ 2 NaCl + CaCO₃

Step 2: Calculate the moles corresponding to 1.00 g of CaCO₃

The molar mass of CaCO₃ is 100.09 g/mol.

1.00 g × 1 mol/100.09 g = 0.0100 mol

Step 3: Calculate the moles of CaCl₂ required to produce 0.0100 moles of CaCO₃

The molar ratio of CaCl₂ to CaCO₃ is 1:1. The moles of CaCl₂ required are 1/1 × 0.0100 mol = 0.0100 mol.

Step 4: Calculate the volume of 0.100 M CaCl₂ that contains 0.0100 mol

0.0100 mol × 1 L/0.100 mol × 1000 mL/1 L = 100. mL

5 0
3 years ago
What is the molar mass of a substance
Mazyrski [523]

Answer:

So the molar mass of a chemical compound is defined as the mass of a sample of that compound is divided by the amount of the substance in that sample measured in the moles.

3 0
4 years ago
What is the I.U.P.A.C. name of this<br> c2h5-o-ch2-c(ch3)3?
Alja [10]

Answer:

1-ethoxy-2,2-dimethyl-propane

Explanation:

common name

ethyl neopenthyl ether

3 0
3 years ago
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