Answer: I think the answer <em><u>MIGHT</u></em> be: Boron, germanium, and tellurium....
Explanation:I know this cuz I had this question on my unit test and I had to look it up online....Hope this helps
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Answer:
The apparent fit of the eastern coastline of South America and western coastline of Africa
Similarities of plants and animal fossils in South America and some parts of African continent which were separated by a vast ocean
Similarities in the sequence of rock layers of opposite sides of the Atlantic Ocean
Answer:
volume is base*length*height
v = b*l*h
472.5 = 7*3*length
(rearranging the equation)
length = 472.5/21
= 22.5
We assume that nitrogen gas sample here is an ideal gas. So that, we can use the ideal gas equation which is expressed as follows:
PV = nRT
First, we calculate the number of moles from the equation above. Then, use molar mass to calculate mass.
n = PV/RT
n = (745/760) (0.250) / 0.08206 (30+273.15)
n = 0.01 mol
m = 0.01 ( 28) = 0.28 g
