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ZanzabumX [31]
3 years ago
11

Why is Ca(OH)2 alkali?

Chemistry
1 answer:
Mashcka [7]3 years ago
4 0
Honestly I also have a question... Why is an elementary student learning high school level science. Back to the answer now; <span>An alkali is a basic hydroxide or </span>ionic salt of an alkali metal or alkaline earth metal element,<span> which is soluble in water. Hope this helped</span>
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If your good at science you could help me out so much!
Andrei [34K]

Answer:

Potassium (K) and Lithium (Li) for the fist one i cant see the second

Explanation:

6 0
2 years ago
According to the image, identify the number of neutrons in the most common isotope of aluminum.
wolverine [178]

Answer:

The number of neutron in the Aluminium Isotope is :

B. 14

Explanation:

Isotopes : These are the atoms which have same atomic number but have different mass number.

<u>This image shows the average atomic mass of Al element because it is in decimals</u>.

Atomic mass = 26.98154

(Note : mass number of single isotope can never be in decimals)

It is the average of mass of different isotopes of Al

Major Isotopes of _{13}^{26.98154}\textrm{Al} are :

  1. _{13}^{26}\textrm{Al}......atomic mass = 26
  2. _{13}^{27}\textrm{Al}.......atomic mass = 27

mass of Al given in image(26.98) is nearly equal to mass of 2nd isotope(27)

mass of _{13}^{26.98154}\textrm{Al}\ \approx 27

Now calculate the neutron in _{13}^{27}\textrm{Al}

Number of neutron = mass number - atomic number

                                = 27 - 13

Number of neutron = 14

(Atomic mass is same as mass number)

5 0
2 years ago
Justin mixed two clear liquids together during an experiment and made the following observations: The mixed liquids decreased in
kvasek [131]

Answer:

B

Explanation:

A chemical change occurred, and this caused the liquid’s physical properties to change.

when we read her experiment we can see that color changed to blue, it is because new products are formed. And the temperature cause this.

5 0
2 years ago
50 POINTS
Trava [24]
My guess is b for the question
3 0
2 years ago
Read 2 more answers
8.
Dima020 [189]
The correct answer is b hope this helps air
5 0
2 years ago
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