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cestrela7 [59]
3 years ago
13

The degree to which various compounds will dissociate in solution varies greatly.

Chemistry
1 answer:
uranmaximum [27]3 years ago
5 0

Answer: True

Explanation:

Weak electrolytes are those solutions which do not undergo complete dissociation when dissolved in water. The dissociation of weak electrolytes is given by an equilibrium.

Example: CH_3COOH\rightleftharpoons CH_3COO^-+H^+

Strong electrolytes are those solutions which undergo complete dissociation when dissolved in water.  The dissociation of strong electrolytes is given by a right arrow.

Example: HCl\rightarrow H^++Cl^-

Thus the degree to which various compounds will dissociate in solution varies greatly is true.

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15. The mass of a sample of iron is 114 g, and the density of iron is 7.86 g/cm3. What is the volume of this iron sample?
anyanavicka [17]

Answer:

The answer is

<h2>14.50 cm³</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}

From the question

mass of iron = 114 g

density = 7.86 g/cm³

The volume is

volume =  \frac{114}{7.86}  \\  = 14.50381679

We have the final answer as

<h3>14.50 cm³</h3>

Hope this helps you

5 0
3 years ago
A copper coin with a mass of 6.30 grams changes temperature in the sunshine from 20.0°C to 32.0°C. How much energy is transferre
mote1985 [20]

Answer:

The energy transferred is  28.5  j

calculation

energy is calculate  MCΔT  formula  where,

M(mass)= 6.30  grams

C(specific heat capacity)= 0.377 j/g

ΔT(change in temperature)= 32.0c- 20 c= 12 c

Energy is therefore= 6.30 g   x 0.377  j/g /c x   12 c =28.5 j

4 0
3 years ago
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