Answer:
i have taken environmental science so i can help
Answer:
Oxygen
Explanation:
Atomic radius trend
-decreases from left to right
-increases from top to bottom
Tungsten is in period 7, which has a larger atomic radius
Oxygen is in period 2, which is in a lower energy level and is on the right side. Therefore, has a smaller atomic radius.
Answer:
The answer is the solution containing the 90g of water.
Explanation:
Because both solutions have the same amount of the sodium chloride, the concentration would be the same if they both had the same amount of water.
Because the second solution has less water, there is more of the sodium chloride per each drop of water.
I hope this helps :)
Hello!
How many molecules are in 30 liters of methane (CH4) at STP ?
We have the following information:
Knowing that by Avogadro's Law for each mole of substance we have 6.02 * 10²³ molecules, it is known that in STP (Standard Temperature and Pressure) one mole of any gas equals 22.4 L, then:
22.4 L ----------------- 6.02*10²³ molecules
30 L -------------------- y molecules

multiply the means by the extremes




Answer:
8.0625*10²³ molecules of methane
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Answer:
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