Answer:
the metal loses electrons to become a positively charged cation
Explanation:
Answer:
Chemical change
Explanation:
Matter changes into a new substance by changing into a chemical change. In a chemical change, the substance cannot be changed back to its previous state and a new substance is formed.
The initial ph of the 0. 10M ch3cooh (aq) solution is -0.64.
The salt sodium acetate is present at the equivalency point. It is a salt of a strong base and a weak acid. The expression "its pH" provides the information.
pH = 7 + 0.5p + 0.5logC
where C is the salt concentration. Monobasic acid is Acetic acid here.
25 ml of 0.10 M NaOH solution are needed for the titration of 25 ml of 0.10 M acetic acid.
Total volume = 25 + 25 = 50ml
The salt concentration = C = 0.10× = 0.05
The pH for weak acid is given by,
pH =
(p
+ logC)
pH =
(1.8× + log0.05)
pH =
[1.8× + (-1.30)]
pH =
(1.8× -1.30)
pH = -0.64
Learn more about pH here;
brainly.com/question/15192160
#SPJ4
Answer:
The value of k is equal to 9.
Explanation:
The given number is 4,522,800,000
We need to write it n the form of a×10ᵇ.
We will count the numbers after 4 in the given number. There are 9 number after 4. So,

So, we can say that the value of k is equal to 9.
Explanation:
1. Latitude or distance from the equator – Temperatures drop the further an area is from the equator due to the curvature of the earth. In areas closer to the poles, sunlight has a larger area of atmosphere to pass through and the sun is at a lower angle in the sky.