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3 years ago

Why does carbon form so many organic compounds?

1 answer:

8 0

Because each carbon atom can form for chemical bonds to another’s atoms and because the carbon atom is just the right small size to fit in comfortably as parts of very large molecules

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Propane, the gas used in barbeque grills, is made of carbon and hydrogen. will the atoms that make up propane form covalent bond

Anika [276]

The atoms in propane form covalent bonds. The four valence electrons of carbon are either shared with electrons from either carbon or hydrogen. Only covalent bonding is possible for this compound. Ionic bonding cannot occur because in this molecule, C and H do not exist as ions. The formula of propane is C3H8.

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4 years ago

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Based on what you have learned about currents, how do you think this mass of trash ends up in the Great Pacific Garbage Patch?

Nonamiya [84]

By currents which push the trash into the “great pacific garbage patch” and the currents never stop so they can’t get out of the circle
(Hope this helps)

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3 years ago

Which is a conversion factor for this statement of equality: 12 in. = 1 foot?

Lera25 [3.4K]

Isn't that going to be an D since 1 foot is equal 12 inches.

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3 years ago

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A 0.630 gram sample of a metal, M, reacts completely with sulfuric acid according to:A volume of 291 mL of hydrogen is collected

Lina20 [59]

Answer:

55.0 g/mol

Step-by-step explanation:

Step 1. Partial pressure of hydrogen

You are collecting the gas over water, so

$p_{\text{atm}} = p_{\text{H}_{2}} + p_{\text{H}_{2}\text{O}}$

$p_{\text{H}_{2}} = p_{\text{atm}} - p_{\text{H}_{2}\text{O}}$

$p_{\text{atm}} = \text{756.0 Torr}$

At 25 °C, $p_{\text{H}_{2}\text{O}} = \text{23.8 Torr}$

$p_{\text{H}_{2}} = \text{756.0 Torr} - \text{23.8 Torr} = \text{732.2 Torr}$

===============

Step 2. Moles of H₂

We can use the Ideal Gas Law.

pV = nRT Divide both sides by RT

n = (pV)/(RT)

p = 732.2 Torr Convert to atmospheres

p = 732.2/760

p = 0.9634 atm

V = 291 mL Convert to litres

V = 0.291 L

R = 0.082 06 L·atm·K⁻¹mol⁻¹

T = 25 °C Convert to kelvins

T = (25 + 273.15 ) K = 298.15 K

n = (0.9632 × 0.291)/(0.082 06 × 298.15)

n = 0.2804/24.47

n = 0.011 46 mol

===============

Step 3. Moles of metal

The partial chemical equation is

M + H₂SO₄ ⟶ H₂ + …

The molar ratio of M:H₂ is 1 mol M:1 mol H₂.

Moles of M = 0.011 46× 1/1

Moles of M = 0.011 46 mol M

===============

Step 4. Atomic mass of M

Atomic mass = mass of M/moles of M

Atomic mass = 0.630/0.011 46

Atomic mass = 55.0 g/mol

7 0

4 years ago

Describe how is the atomic mass of an atom is calculated. URGENT, NEED TO KNOW NOW!!!

padilas [110]

If it's your first encounter with chemistry, your instructor will want you to learn how to use the periodic table to find the atomic mass (atomic weight) of an element. This number usually is given below an element's symbol. Look for the decimal number, which is a weighted average of the atomic masses of all the natural isotopes of an element.

8 0

3 years ago