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zzz [600]
3 years ago
7

If a stack of 40 solid oxide fuel cells in series generates 1,000 W of power, and each cell contributes equally to the power of

the stack, how much power does each cell contribute?
0.04 W

14.8 W

25 W

40,000 W
Chemistry
2 answers:
Fittoniya [83]3 years ago
8 0

Answer:

25 W

Explanation:

nexus9112 [7]3 years ago
8 0

Answer:

<h2>25W</h2>

Explanation:

right on edg 2021

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Consider the following balanced equation: SiO2(s)+3C(s)→SiC(s)+2CO(g) Complete the following table showing the appropriate numbe
Step2247 [10]

Answer:

              mol(SiO₂)              mol(C)               mol(SiC)                    mol(CO)

Row 1:      0.8 x 10               0.9 x 10              0.3 x 10                     0.6 x 10

Row 2:     0.2 x 10               0.6 x 10              0.2 x 10                     0.4 x 10

Row 3:         8.0                   2.4 x 10                   8.0                        1.6 x 10

Row 4:         2.8                      8.4                        2.8                            5.6

Row 5:        0.816                  2.45                      0.816                         1.63

Explanation:

  • From the balanced equation:

<em>SiO₂(s) + 3C(s) → SiC(s) + 2CO(g),</em>

<em></em>

It is clear that 1.0 mole of SiO₂ reacts with 3.0 moles of C to produce 1.0 mole of SiC and 2.0 moles of CO.

  • We can complete the table of no. of moles of each component:

<em>A. complete the first row. Express your answers using one significant figure separated by commas. Mol C, Mol SiC, Mol CO =</em>

<em>3.0 moles of SiO₂:</em>

We use the triple amount of SiO₂, so we multiply the others by 3.0.

So, it will be 3.0 moles of SiO₂ with 9.0 moles of C that produce 3.0 moles of SiC and 6.0 moles of CO.

<em>B. Complete the second row. Express your answers using one significant figure separated by commas. Mol SiO2, Mol SiC, Mol CO =</em>

<em>6.0 mole of C:</em>

We use the double amount of C, so we multiply the others by 2.0.

So, it will be 2.0 moles of SiO₂ with 6.0 moles of C that produce 2.0 moles of SiC and 4.0 moles of CO.

<em>C. Complete the third row. Express your answers using two significant figures separated by commas. Mol SiO2, Mol C, Mol SiC =</em>

<em>16.0 moles of CO:</em>

We use the amount of CO higher by 8 times than that in the balanced equation, so we multiply the others by 8.0.

So, it will be 8.0 moles of SiO₂ with 24.0 moles of C that produce 8.0 moles of SiC and 16.0 moles of CO.

<em>D. Complete the fourth row. Express your answers using two significant figures separated by commas. Mol SiO2, Mol C, Mol SiC =</em>

<em>2.8 moles of SiO₂:</em>

We use the amount of SiO₂ higher by 2.8 times than that in the balanced equation, so we multiply the others by 2.8.

So, it will be 2.8 moles of SiO₂ with 8.4 moles of C that produce 2.8 moles of SiC and 5.6 moles of CO.

<em>E. Complite the fifth row. Express your answers using three significant figures separated by commas. Mol SiO2, Mol SiC, Mol CO =</em>

<em>2.45 moles of C:</em>

We use the amount of C lower by 0.8167 times than that in the balanced equation, so we multiply the others by 0.8167.

So, it will be 0.8167 moles of SiO₂ with 2.45 moles of C that produce 0.8167 moles of SiC and 1.633 moles of CO.

  • <em><u>The answers are expressed in the required significant figures in the answer part (table above).</u></em>
4 0
3 years ago
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How many moles of xenon gas are necessary to exert a 0.64atm pressure in an 8.5L container at 300.0K?
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Answer:

0.026 moles

Explanation:

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3 years ago
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If you have 10g of Fe and 20 g of oxygen, how much product will you have?
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20 grams of methamphetamine

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Dafna11 [192]
Be, B, C, N (going from smallest to biggest)
6 0
3 years ago
PLEASEEEE HELP I WILL GIVE 30 POINTS Cobalt
Ymorist [56]

Answer:

Iron: Fe

Co: Cobalt

Na: Sodium

Tin: Sn

P: Phosphorus

F: Flourine

Fe: Iron

Magnesium: Mg

Uranium: U

Ca: Calcium

Carbon: C

Lead: Pb

Ag: Silver

Zn: Zinc

Ni: Nickle

----------------

There is honestly no right answer for this but here is what I would put:

Atomic mass increases as you go from left to right. If you look at the periodic table, it would be between Sn and Sb. It would bet here because Sn is 118 and Sb is 121. Basing it off of Antimony and putting it in group 15, the properties are that it is metallic and is a poor conductor of heat. I would call it Stin, which would be shortened to St.

7 0
3 years ago
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