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valentinak56 [21]
3 years ago
10

Question 9 (1 point)

Chemistry
1 answer:
otez555 [7]3 years ago
5 0
This is true, depending on the color, there should be a chart where you can compare the color of the litmus paper (dipped in acid/base) to figure out how basic or acidic it is
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Which yields H+(aq) as the only positive ion in an aqueous solution?(1) CH3CHO (2) CH3CH2OH (3) CH3COOH (4) CH3OCH3
Arte-miy333 [17]
If H+ would have to dissociate from a substance and must be the only positive ion in the solution that substance must be an acid.
CH3CHO is an aldehyde called acetaldehyde. 
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3 years ago
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When HClO2 is dissolved in water, it partially dissociates according to the equation
Natasha_Volkova [10]

Answer:

x = 100 * 1.1897 = 118.97 %, which is > 100 meaning that all of the HClO2 dissociates

Explanation:

Recall that , depression present in freezing point is calculated with the formulae = solute particles Molarity x KF

0.3473 = m * 1.86

Solving, m = 0.187 m

Moles of HClO2 = mass / molar mass = 5.85 / 68.5 = 0.0854 mol

Molality = moles / mass of water in kg = 0.0854 / 1 = 0.0854 m

Initial molality

Assuming that a % x of the solute dissociates, we have the ICE table:

                 HClO2         H+    +   ClO2-

initial concentration:       0.0854                    0             0

final concentration:      0.0854(1-x/100)   0.0854x/100   0.0854x / 100

We see that sum of molality of equilibrium mixture = freezing point molality

0.0854( 1 - x/100 + x/100 + x/100) = 0.187

2.1897 = 1 + x / 100

x = 100 * 1.1897 = 118.97 %, which is > 100 meaning that all of the HClO2 dissociates

3 0
3 years ago
Drag each tile to the correct location.
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Carbon, helium, and sodium are monoatomic elements.

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How can two objects of similar shape and size have different densities
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The mass and Volume is different even thought they have a similar shape and size
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You make the following measurements of an object – 22 kg and 42 m3. What would the object’s density be? Show your work for credi
Dafna11 [192]
Density = mass / volume
therefore, density = 22/42 = 0.524 kg/m3
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3 years ago
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