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3 years ago

Balance equation Al(s)+CuSO4(aq) = Al2(SO4)3(aq)+__Cu(s)

Chemistry

2 answers:

Leokris [45]3 years ago

8 0

2Al +3CuSO4=Al2 (SO4)3+3Cu.

is the balanced equation.

HOPE IT HELPS YOU '_'

Setler79 [48]3 years ago

3 0

2 Aluminum
3 Sulfate
3 Copper

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Which description is a characteristic of a base?

MA_775_DIABLO [31]

I am pretty sure it is B. If it turns litmus paper red it is acidic. The other 2 make no sense.
I might be wrong tho.
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3 years ago

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If it takes 20.4 mL of NaOH(aq) to reach the equivalence point of the titration, what is the molarity of H2SO4(aq)? For your ans

Alik [6]

Question is incomplete, complete question is;

A 34.8 mL solution of $H_2SO_4$ (aq) of an unknown concentration was titrated with 0.15 M of NaOH(aq).

$H_2SO_4(aq)+2NaOH(aq)\rightarrow Na_2SO_4(aq)+2H_2O(l)$

If it takes 20.4 mL of NaOH(aq) to reach the equivalence point of the titration, what is the molarity of $H_2SO_4(aq)$ ? For your answer, only type in the numerical value with two significant figures. Do NOT include the unit.

Answer:

0.044 M is the molarity of $H_2SO_4$ (aq).

Explanation:

The reaction taking place here is in between acid and base which means that it is a neutralization reaction .

To calculate the concentration of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $H_2SO_4$

$n_1,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is NaOH.

We are given:

$n_1=2\\M_1=?\\V_1=34.8 mL\\n_2=1\\M_2=0.15 M\\V_2=20.4 mL$

Putting values in above equation, we get:

$2\times M_1\times 34.8 mL=1\times 0.15 M\times 20.4 mL\\\\M_1=\frac{1\times 0.15 M\times 20.4 mL\times 10}{2\times 34.8 mL}=0.044 M$

0.044 M is the molarity of $H_2SO_4$ (aq).

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3 years ago

Why does a group of warmer atoms take up more volume than a group of cooler atoms ?

const2013 [10]

Warmer atoms expand. There is also more movement. This is also explained when putting it into terms with solid vs. gas. in a solid, the atoms vibrate, but they can't move very far because there is not a lot of space between them. In a gas, on the other hand, the atoms are spread apart, and they move very fast. Putting it into context with water, the steam (gas) version is hot, and the ice cube (solid) version is cold.

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3 years ago

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The rate law for a reaction is rate=k[A][B] Which one of the following statements is false? The rate law for a reaction is Which

Andrews [41]

Answer: The reaction is first order overall.

Explanation: Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

$Rate=k[A]^x[B]^y$

k= rate constant

For the given rate law:

$Rate=k[A]^1[B]^1$

x = 1= order with respect to A

y =1= order with respect to B

n =( x+y)= (1+1) = 2 = Total order

a) If [A] is doubled, the reaction rate will increase by a factor of 2: True

$Rate'=k[2A]^1[B]^1$

$Rate'=k[2]^1[A]^1[B]^1$

$Rate'=[2]^1\times Rate$

$Rate'=[2]\times Rate$

b) The reaction is first order overall: False

The overall order is 1+1= 2.

c) k is the reaction rate constant: True

$Rate=k[A]^x[B]^y$

k= rate constant

d) The reaction is first order in [B]: True

For the given rate law:

$Rate=k[A]^1[B]^1$

x = 1= order with respect to A

e) The reaction is first order in [A]: True

For the given rate law:

$Rate=k[A]^1[B]^1$

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3 years ago

PLEASE HELP ME Which of the following is an example of -ΔS? Picking up marbles and placing them in a sack Paint spilling onto th

yan [13]

Answer:

Picking up marbles and placing them in a sack

Explanation:

The entropy of a chemical system is defined as the measure of disorder. Therefore a negative change in entropy is the movement to a more ordered state. The only option here which achieves a more ordered state, would be the first option.

Picking up marbles and placing them in a stack achieves more order, rather than the other options - that achieve more disorder.

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3 years ago

Balance equation Al(s)+__CuSO4(aq) = ____Al2(SO4)3(aq)+____Cu(s)

Balance equation Al(s)+CuSO4(aq) = Al2(SO4)3(aq)+__Cu(s)