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meriva
3 years ago
6

6. Which of the following forces occurs when forces push or pull in opposite directions?

Chemistry
1 answer:
evablogger [386]3 years ago
7 0
Tension is the core answer
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A buffer is prepared by adding 20.0 g of sodium acetate 1ch3coona2 to 500 ml of a 0.150 m acetic acid 1ch3cooh2 solution. (a) de
cupoosta [38]
First, we have to get moles of CH3COONa = mass/molar mass

 = 20 g / 82.03 g/mol = 0.244 moles 

when we have  [CH3COOH] = 0.15 M

∴ [CH3COONa] = moles of CH3COONa / Volume of solution
                           
                           = 0.244 moles / 0.5L = 0.488 M


when we look up for Ka of acetic acid value it is equal 1.8 x 10^-5

So we can get Pka = -㏒Ka
                             
                                = -㏒(1.8 x10^-5)
                                = 4.7 

now we will use Henderson - Hasselbalchn equation to get the PH:

PH = Pka + ㏒[conjugate basic/weak acid]

when CH3COOH is the weak acid & CH3COO- is the conjugate base so by substitution:

PH = 4.7 + ㏒ (0.488/0.15)

      = 5.2

b) 
when we have this equation for the reaction:

HCl + CH3COONa → CH3COOH + NaCl

ionic equation : H+ + Cl- + CH3COO- + Na+ → CH3COOH + Na+ + Cl-

when HCl + H2O → H3O+  + Cl-

∴ the reaction will be:

CH3COO- (aq) + H3O+(aq) → CH3COOH(aq)  + H2O(l)
7 0
3 years ago
Read 2 more answers
GIVE ME BRAINLIEST!!!!<br><br> nah im jk lol<br><br> ANYWAY HAVE A GREAT DAY!
topjm [15]

Answer:

okie then you too

                     

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3 years ago
Two people are playing tug of war. One person pulls to the right with 32 N of force. The other person pulls to the left with 37
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Answer:

The net force is 5 N and to the left.

Explanation:

37 N - 32 N = 5 N and since there is a stronger pull from the rope moves towards the left so the direction of motion is left.

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Whivh is the correct mole ratio of K3N to KCI in the chemical reaction ​
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3.65. The mole ratio from the balanced equation is 2 moles CO2 : 2 moles CO. 2.

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What’s the amino acid for this?
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The amino acid for this should be Arginine. I am not entirely sure.
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