Answer:
An acute triangle (or acute-angled triangle) is a triangle with three acute angles (less than 90°).
Explanation:
hope this helps
Answer:
moles Pb(NO₃)₂ ≅ 0.0213 mole (three sig. figs.)
Explanation:
converting...
grams to moles => divide by formula weight
moles to grams => multiply by formula weight
for this problem ...
moles Pb(NO₃)₂ = 7.04g / 331.2g/mol = 0.021256 (calculator answer)
≅ 0.0213 mole (three sig. figs.)
<span>The question says, 'water vapor comes together to form a cloud. This is an example of what change in state. The correct option is condensation. Condensation occurs when water collect as droplets on a cool surface when it comes in contact with humid air. It involves the conversion of a vapor to liquid.</span><span />
A. An element in its pure state is always 0.
B. One of the oxidation rules is that H with a nonmetal (which is Cl) is always +1. Cl would be -2 because -2 + (+1) equals -1.
C. Oxygen is always -2, so Cl- would have to be -1 to equal -3.
It has been awhile since I learnt this in AP Chem so answers could be a little rusty. Hopefully it helps.
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