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pantera1 [17]
3 years ago
5

The table shows the density and volume of four liquid samples. The four liquids do not mix with each other. What is the order in

which the layers will be formed, from top to bottom, if the four liquids are poured into a beaker and allowed to settle?
A) Sample A; Sample B; Sample C; Sample D
B) Sample C; Sample A; Sample D; Sample B
C) Sample D; Sample C; Sample B; Sample A
D) Sample B; Sample D; Sample A; Sample C
Chemistry
1 answer:
s344n2d4d5 [400]3 years ago
4 0
The table shows the density and volume of four liquid samples. The four liquids do not mix with each other. What is the order in which the layers will be formed, from top to bottom, if the four liquids are poured into a beaker and allowed to settle
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Hydroxylamine is a weak molecular base with kb = 6.6 x 10-9. what is the ph of a 0.0500 m solution of hydroxylamine?
7nadin3 [17]
Answer is: pH of hydroxylamine solution is 9,23.

Kb(NH₂OH) = 1,8·10⁻⁵<span>.
c</span>₀(NH₂OH)<span> = 0,0500 M = 0,05 mol/L.
c(NH</span>₂⁺) = c(OH⁻) = x.

c(NH₂OH<span>) = 0,05 mol/L - x.
Kb = c(NH</span>₂⁺) · c(OH⁻) / c(NH₂OH).

0,0000000066 = x² /  (0,05 mol/L - x). 

solve quadratic equation: x = c(OH⁻) = 0,000018 mol/L.<span>
pOH = -log(</span>0,000018 mol/L) = 4,74.<span>
pH = 14 - 4,74 = 9,23.</span>


4 0
3 years ago
In a chemical reaction how does the mass of the products compare with the mass of the reaction a greater thenb less thenc equal
Neko [114]
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5 0
4 years ago
Which postulate of Dalton's atomic theory is the result of the law of conservation of mass
creativ13 [48]

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8 0
4 years ago
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Calculate the average reaction rate of Cl2 consumed using the following information. H2 + Cl2 yields 2 HCl A table with three co
klemol [59]
Answer : Option D) 2.50 X 10^{-3} Mol/(L s)

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3 years ago
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