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slava [35]
3 years ago
9

If 5.0mL of HC2H30 require 4.96mL of 0.9581 M NaOH to just consume the HC2H302, what is the

Chemistry
1 answer:
Liono4ka [1.6K]3 years ago
5 0

Answer:

it is a

Explanation:cause its a

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What happens to an endothermic reaction when an equilibrium system is heated?
mina [271]

Answer:

The system shifts forward

Explanation:

The forward reaction is favoured in order to reduce the disruption (excess heat) to the system. Position of equilibrium shifts rightwards of the equation for excess heat to be absorbed during the endothermic forward reaction

8 0
3 years ago
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How many gallons of a 60​% antifreeze solution must be mixed with 70 gallons of 25​% antifreeze to get a mixture that is 50​% ​a
Neporo4naja [7]

Answer:

The answer to your question is 175 gallons

Explanation:

Data

60% antifreeze solution  volume = ? = x

25% antifreeze solution   volume = 25%

Final concentration 50%

Process

              0.6x + 0.25(70) = 0.5(70 + x)

Simplification

              0.6x + 17.5 = 35 + 0.5x

              0.6x - 0.5x = 35 - 17.5

                          0.1x = 17.5

                              x = 17.5/0.1

Result

                              x = 175 gallons

6 0
3 years ago
What is an independent variable
frez [133]

Answer:

a variable (often denoted by x ) whose variation does not depend on that of another.

Explanation:

4 0
3 years ago
A 25.0 ml sample of 0.150 m butanoic acid is titrated with a 0.150 m naoh solution. what is the ph after 26.0 ml of base is adde
lesantik [10]
First,
Moles of HBu = Volume per liter * moles of HBu/ liter
                        =  25ml/1000 * 0.15 = 0.00375 moles
moles of NaOH = volume per liter * moles of NaOH/liter
                           = 1 ml/1000 * 0.15 =  0.00015 moles
according to this equation:
HBu + NaOH → H2O + NaBu
when 1 mol of NaOH gives 1mol of HBu
So     0.00015 of NaOH will give 0.00015 mol of HBu 
∴moles of HBu which remains =   0.00375- 0.00015 = 0.0036 moles 

∴moles of Bu- produced = 0.00015 moles
when the total volume = 0.025 + 0.026 =0.051 L
[HBu] = 0.0036moles / 0.051 L = 0.071 moles
[Bu] = 0.00015 / 0.051L = 0.0029 moles
when Ka = [H+] [Bu] / [HBu]
1.5x10^-5 = [H+] (0.0029) /(0.071)
∴[H+] =1x10^-6 / 0.076 = 1.5 x 10^-5
∴PH = -㏒[H+]
        = - ㏒ 1.5x10^-5 
        = 4.81

3 0
3 years ago
When a strip of magnesium metal is touched to a flame, a bright light and a whitish substance are produced. Why is the burning o
skad [1K]

Answer:

The production of the whitish substance.

Explanation:

When you add heat to a strip of magnesium, the metal reacts with the surrounding oxygen and produces a whitish smoke that is a new compound that wasn't there before.

6 0
3 years ago
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