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eduard
3 years ago
15

Help? for me? yes? please?

Chemistry
1 answer:
Sladkaya [172]3 years ago
6 0

Answer:

2 Mg + O2 -> 2 MgO

is a synthesis reaction.

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Equation is balanced already
mojhsa [17]

Answer:

1.) 13 g C₄H₁₀

2.) 41 g CO₂

Explanation:

To find the mass of propane (C₄H₁₀) and carbon dioxide (CO₂), you need to (1) convert mass O₂ to moles O₂ (via molar mass), then (2) convert moles O₂ to moles C₄H₁₀/CO₂ (via mole-to-mole ratio from equation coefficients), and then (3) convert moles C₄H₁₀/CO₂ to mass C₄H₁₀/CO₂ (via molar mass). It is important to arrange the ratios in a way that allows for the cancellation of units. The final answers should have 2 sig figs to match the sig figs of the given value.

Molar Mass (C₄H₁₀): 4(12.011 g/mol) + 10(1.008 g/mol)

Molar Mass (C₄H₁₀): 58.124 g/mol

Molar Mass (CO₂): 12.011 g/mol + 2(15.998 g/mol)

Molar Mass (CO₂): 44.007 g/mol

Molar Mass (O₂): 2(15.998 g/mol)

Molar Mass (O₂): 31.996 g/mol

2 C₄H₁₀ + 13 O₂ ----> 8 CO₂ + 10 H₂O

 48 g O₂             1 mole             2 moles C₄H₁₀            58.124 g
---------------  x  -----------------  x  -------------------------- x  ------------------  =  
                         31.996 g              13 moles O₂               1 mole

=  13 g C₄H₁₀

 48 g O₂             1 mole               8 moles CO₂            44.007 g
---------------  x  -----------------  x  -------------------------- x  ------------------  =  
                         31.996 g              13 moles O₂               1 mole

=  41 g CO₂

6 0
2 years ago
Earth's oceans absorb carbon dioxide emitted by humans and other animals, and eventually turn it into carbonate rocks. Which "sp
Likurg_2 [28]
<span>A. biosphere
</span><span>C. geosphere
</span>E. atmosphere
<span>F. hydrosphere
</span>
Earth's oceans absorb carbon dioxide emitted by humans and other animals, and eventually turn it into carbonate rocks. Which "spheres" are part of this<span>process? Select all that apply.
</span>
NOT:
<span>B. exosphere
</span><span>D. cryosphere</span>
4 0
3 years ago
Read 2 more answers
A chemist needs 2.00 liters of hydrochloric acid. How many pints is this?
77julia77 [94]
Is that supposed to say 200/2.00??
6 0
4 years ago
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Based on its position on the periodic table sodium is a solid at room temperature
ruslelena [56]

True

Explanation:

The position of sodium on the periodic table makes the element a solid at room temperature is very correct.

  • Sodium is an elements with 11 electrons in its shell.
  • It is located in group 1 on the periodic table because it contains an outer valence electron.
  • In a free state Na metal, the atoms exhibit metallic bonding.
  • Metallic bonding is responsible for the solid nature of this alkali metal at room temperature.
  • It is highly reactive because it has just one valence electron.
  • Metals are usually found left of the periodic table.

Learn more:

Group 1 brainly.com/question/2154626

#learnwithBrainly

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If your bike isn't the right size, your legs could be rubbing up against the seat of your bike. The friction can chafe the skin on your legs. If you were to crash your bike, skidding on the ground can cause anywhere from minor scrapes to serious friction burns.
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3 years ago
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