Answer:
150 g of potassium contained 3.8 moles of potassium.
Explanation:
Given data:
Mass of potassium = 150 g
Moles of potassium = ?
Solution:
Number of moles = mass/ molar mass
Molar mass of potassium = 39 g/mol
Now we will put the values in formula:
Number of moles = mass/ molar mass
Number of moles = 150 g/ 39 g/mol
Number of moles = 3.8 mol
150 g of potassium contained 3.8 moles of potassium.
Approximating 7 to 20 kilometers
Hope this helps
Question∵
Compared to visible light, an electromagnetic wave that has a longer wavelength will also have?
Answer:
Hi, There! -Randp12- My Name Is jay I'm here to help! :)
<u><em>The correct answer is lower frequency.</em></u>
Explanation:
Information to Support My Answer :D
it is visible that wavelength and frequency follow inverse relation. For increase in wavelength, the value of frequency decreases and vice-versa.
Therefore for higher wavelength, the electromagnetic wave will also have lower frequency.
Hope this helps!
:D
Explanation:
C₄H₈O₂ C₂H₄O
C₄H₁₂O₄ CH₃O
C₂H₁₀O₂ CH₅O
The empirical formula is that which expresses the composition of a compound in the simplest whole number ratio of the atoms of the different elements that makes up a compound.
The molecular formula is the true formula of the compound. It expresses the actual number of moles of atoms of the different elements present in a molecule of the compound.
C₄H₈O₂ C₂H₄O
4: 8 : 2 divided by 2 gives 2: 4 : 1
C₄H₁₂O₄ CH₃O
4: 12: 4 divided by 3 gives 1: 3: 1
C₂H₁₀O₂ CH₅O
2: 10: 2 divided by 2 gives 1: 5: 1
learn more:
Empirical formula brainly.com/question/2774727
#learnwithBrainly
