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son4ous [18]
3 years ago
14

Pleaseeee help me only 29 and 30

Chemistry
1 answer:
stepladder [879]3 years ago
3 0

Answer:

29: a. unbalanced

b. unbalanced

c. unbalanced

30. a. coefficient b. subscript c. formula unit d. element e. reactant f. product

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Calculate the moles of FeFe in 1.17×10221.17×1022atoms of FeFe.
Ivenika [448]

Answer:

The number of moles of Fe in 1.17*10^22 atoms Fe is 0.0194 moles

Explanation:

Step 1: Data given

Number of atoms of Fe = 1.17 * 10^22 atoms

Number of Avogadro = 6.022 *10^23

Step 2: Calculate number of moles Fe

Moles Fe = atoms Fe / number of Avogadro

Moles Fe = 1.17*10^22 atoms / 6.022*10^23 / moles

Moles Fe = 0.0194 moles

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ElenaW [278]

Explanation:

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Step 1: Wind moves the blades of the turbine.

Step 2: Internal shaft spins

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7 0
3 years ago
To what temperature must 7. 50 moles of a gas have to be heated in a 20L container in order for it to exert a pressure of 6. 50
givi [52]

Answer:

<em>21.14 K</em>

Explanation:

<em>We know the Ideal Gas Equation is :-</em>

<em>PV = nRT</em>

<em>=> T = PV/nR</em>

<em>=> T = 6.5 x 20 / 7.5 x 0.082</em>

<em>=> T = 130 / 6.15</em>

<em>=> T = 21.14 K</em>

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