Answer:
They are arranged by increasing atomic mass/number. Atomic mass/number is identified by the amount of protons in the element. For example, Helium has an atomic mass of 2. That means it has 2 protons. Groups are identified when elements have similar properties, and periods are the rows of elements with the same number of electron shells.
I hope this helps!
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Answer:
The answer to your question is a) C = 0.056 cal/g°C b) 107.8 g/mol
Explanation:
I included a picture of the problem because it says that it has inappropriate words or links
Answer:
4.62 M
Explanation:
Molarity = moles/volumes (L), so you need to find the moles and the volumes in liters.
Finding the volume is easy because you just have to convert mL to L, so the volume is 0.45 L
Next, find the moles. You can do this by using the molar mass of aluminum to convert the grams to moles. The molar mass of aluminum is 26.98 g/mol.
56 g * (1 mol/26.98 g) = 2.08 mol
Now, divide the moles (2.08) by the volume (.45 L)
Molarity = 4.62 M
Answer:
Over the past few decades, humans have released so many different chemicals into the air that they have changed the mix of gases in the atmosphere. ... In addition, the exhaust from cars, trucks, and buses releases nitrogen oxides and sulfur dioxide into the air.
