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Tanya [424]
3 years ago
8

Helium gas collected at a pressure of 0.0045 atm is put into a flexible balloon measuring 350 mL in volume. What volume, in mL,

would the balloon be if the pressure were increased to 0.350 atm?
Chemistry
1 answer:
NISA [10]3 years ago
6 0
Answer: 0.25 atm
Evidence: i looked it up
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A balloon contains 11.1 g of nitrogen monoxide gas (NO). how many molecules are in the balloon?
grandymaker [24]

The number of molecules that are in balloon are = 2.227 x10^23 molecules

<h3> calculation</h3>

calculate the number of moles of NO

moles = mass/molar mass

molar mass  of NO = 14+ 16 = 30 g/mol

moles is therefore=  11.1 g/30g/mol= 0.37 moles

by use of Avogadro's constant that is

                                     1 mole= 6.02 x10^23  molecules

                                          0.37 =? molecules

=(6.02 x10^23 x  0.37 moles)/ 1mole=2.227 x10^23 molecules

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Answer:c

Explanation:

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7 0
3 years ago
How does electron sharing occur in forming covalent bonds?
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Covelant bonds form when 2 atoms do not have full outer shells.
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Draw the major organic product for the reaction of 1-phenylpropan-1-one with the provided phosphonium ylide.
prohojiy [21]

Answer:

2-methylene propylbenzene

Explanation:

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