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TEA [102]
2 years ago
10

Which of the atoms shown has an atomic number of 4?

Chemistry
1 answer:
spin [16.1K]2 years ago
8 0

Answer:

B. Be

Explanation:

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(08.02 MC)
lesantik [10]

Answer:

d. 0.208 M NaOH

Explanation:

M[NaOH] = 23+16+1= 40g/mol

2.40L = 2.4dm3

M=m/Mv

M=20.0g/40g/mol×2.4dm3

M=20.0g ÷ 96

M= 0.208 M NaOH

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2 years ago
What kind of energy does a rubber band have when stretched
ICE Princess25 [194]
Elastic potential energy
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3 years ago
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Consider the following reaction: 3Fe(s) + 4H₂O(g) ➞ Fe₃O₄(s) + 4H₂(g). To answer the following question: "How many moles of hot
UkoKoshka [18]
X moles of hot water vapor(H2O) * 1 mol Fe3O4 / 4 mol H2O * 233.55g Fe3O4 / 1 mol = 275 g

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x = 4.71 mol of hot water vapor (steam)

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7 0
2 years ago
3. How many moles of aluminum are needed to react completely with 1.2 mol of FeO?
hoa [83]

Answer:

ssf

Explanation:

3 0
2 years ago
Convert a pressure of 0.0248 mm Hg to the equivalent pressure in pascals (Pa). How did you get your answer ?
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