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How many molecules are in 0.25 moles of oxygen gas (O2)? (2022)
How many molecules are in 0.25 moles of oxygen gas (O2)? (2022)
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Practice Questions
1 question
Q1
How many molecules are in 0.25 moles of oxygen gas (O2)? (2022)
3.011 x 10^23
6.022 x 10^22
1.2044 x 10^23
1.5055 x 10^23
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Number of molecules = moles x Avogadro's number = 0.25 moles x 6.022 x 10^23 molecules/mole = 1.5055 x 10^23 molecules.
Questions & Step-by-step Solutions
1 item
Q
Q: How many molecules are in 0.25 moles of oxygen gas (O2)? (2022)
Solution:
Number of molecules = moles x Avogadro's number = 0.25 moles x 6.022 x 10^23 molecules/mole = 1.5055 x 10^23 molecules.
Steps: 5
Show Steps
Step 1: Understand that 1 mole of any substance contains Avogadro's number of molecules, which is approximately 6.022 x 10^23.
Step 2: Identify how many moles of oxygen gas (O2) you have, which is 0.25 moles in this case.
Step 3: Use the formula to find the number of molecules: Number of molecules = moles x Avogadro's number.
Step 4: Plug in the values: Number of molecules = 0.25 moles x 6.022 x 10^23 molecules/mole.
Step 5: Calculate the result: 0.25 x 6.022 = 1.5055, and keep the exponent the same, so you get 1.5055 x 10^23 molecules.
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