How many mL of 1.76 M sodium hydroxide solution (strong base) must be added to 0.75
Macetic acid to make 683 mLa pH 49 buffer? (pka of acetic acid is 4.76)

Answer: Special care is required to prepare a solution of sodium hydroxide or NaOH in water because considerable heat is liberated by the exothermic reaction. The solution may splatter or boil. Here is how to make a sodium hydroxide solution safely, along with recipes for several common concentrations of NaOH solution.

Explanation:

Hope this helps!

4. Why is it that your feet don't sink into the earth?

Use the bond enthalpy data given to estimate the heat released when 6.50 g of
nitrogen gas reacts with excess hydrogen gas to form ammonia at 25C.

The ancient Egyptians planted crops and raised
animals for food as early as?
100 AD.
2000 BCE.
5200 BCE.
2560 BCE.

During autumn, days grow colder. What happens to the nights?
They grow brighter.
They grow shorter.
They grow warmer.
They grow longer.

33) 1 e = ........С
O 1.6*10^-27
O * 1.6 *10^-19
O 1.66 * 10^-19
o 1.66* 10^-27​

Oxalic acid is a diprotic acid with a first dissociation constant Ka1 = 0.0537 and a second dissociation constant Ka2 = 5.42×10-5. Consider all the species in equilibrium with each other in a 0.45 M solution. Note that the first acid dissociation constant is pretty large. This acid is almost a strong acid.

Part 1:
What is the concentration of undissociated oxalic acid in the 0.45 M oxalic acid solution?

Part 2:
What is the concentration of hydrogen oxalate?

Part 3:
What is the concentration of oxalate?

Part 4:
What is the concentration of hydronium?

Part 5:
What is the concentration of hydroxide?

Part 6:
What is the pH of the solution?

Sometimes people have to cry out all their tears, to make room for a heart full of smiles.​

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______help in increasing rates of reactions

Which one is location 3 in___

Arm

Center

Different types of cells use ? of the chromosome.