Answer:
0.48
Explanation:
all you need is to decide 12% with 100% then you multiply it by 4L.
You need 0.111 g of NH₃ to provide the same number of molecules as
in 0.95 g of SF₆.
<em>Step 1</em>. Convert grams of SF₆ to moles of SF₆
Moles of SF₆ = 0.95 g SF₆ × (1 mol SF₆/146.06 g SF₆) = 0.006 50 mol SF₆
Now, we can use the knowledge that <em>1 mol of anything has the same number of molecules</em> (Avogadro’s number) <em>as 1 mol of anything else</em>
.
Thus, 0.006 50 mol NH₃ has the same number of molecules
as 0.006 50 mol SF₆.
<em>Step 2</em>. Convert moles of NH₃ to grams of NH₃.
Mass of NH₃ = 0.006 50 mol NH₃ × (17.03 g NH₃/1 mol NH₃) = 0.111 g NH₃
People conduct scientific investigations by formulating a hypothesis and observing the results. They then draw conclusions from those results and then share those conclusions with the larger scientific community.
Answer:
Have you ever noticed that the night sky in winter looks different than the summer? We see constellations at different times of the year - spring, summer, fall, & winter. This occurs because the Earth is orbiting the Sun. ... In summer, we see the opposite (we see Scorpius at night and Orion is in the sky during the day).
Answer:
Barb tested the streak and luster.
Explanation:
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