9. How many significant figures are there in the number 0.0001372?
2 answers:
Answer: D. 4
Explanation:
For numbers with decimal point, we should start counting from the first number that non-zero from the left.
0.0001372
We start counting from 1, since it is the first non-zero number
1, 3, 7, 2
There are in total 4 significant figures
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Please let me know if you have any question or need further explanation
D because 0 is always ignorant in significant figures. hope that helps:)
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It depends on the plant you have. when you buy a new plant it usually has instructions so you would follow. Hope it helps!!!
Answer:
9.0 g/cm³
Explanation:
Density can be computed with the formula:
Where:
D = Density
M = Mass
V = Volume
In your problem we are given:
84 cm³ = volume
760 g = mass
So we just plug in our given into the formula:
The answer would then be:
9.0 g/cm³
Word equation: magnesium chloride + bromine -> magnesium bromide + chlorine
balance equation: MgCl2 + 2Br -> MgBr2 + 2Cl
Use Raoult's Law:
Psolution = (χsolvent) (P°solvent)
24.90 = (x) (25.756)
x = 0.966765 (this is the solvent mole fraction)
χsolute = 1 - 0.966765 = 0.033235
χsolute = 0.03324 (to four sig figs)
A) Particles of gas move slower.
B) Gas changes to liquid.
C) The gas loses thermal energy.
D) Gas particles decrease.
