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madam [21]
3 years ago
13

10

Chemistry
1 answer:
Tpy6a [65]3 years ago
6 0

Answer:

one is a and my sister in the with me to go in my

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Determinar los mililitros de solución 0.5 Normal de NaCl que se pueden preparar a partir de 3 L de solución de cloruro de sodio
MrMuchimi

Answer:

uhmmm english?

Explanation:

6 0
3 years ago
What does it mean if an element has 8 valence electrons? O A. It has 8 protons. O B. It has a full octet. O O O O C. It reacts v
Goshia [24]

Answer:

i belive its c

Explanation:

Atoms of group 18 elements have eight valence electrons (or two in the case of helium). These elements already have a full outer energy level, so they are very stable. As a result, they rarely if ever react with other elements. Therefore, it is very reactive and gives up electrons in chemical reactions.

4 0
3 years ago
Read 2 more answers
Chlorine has two naturally occurring isotopes, ³⁵Cl and ³⁷Cl. What is the mass number of each isotope? How many protons, neutron
Arte-miy333 [17]

The mass number of ³⁵Cl and ³⁷Cl is 35 and respectively.

<h3>What is atomic mass? </h3>

Atomic mass is defined as the sum of number of protons and number of neutrons of an element.

Atomic mass is represented by A.

<h3>What is Atomic number?</h3>

Atomic number is defined as the number of electron in an element.

Atomic number is represented by Z.

<h3>What is Isotopes? </h3>

Isotopes are the element which have same atomic number but have different atomic mass.

Number of proton is equal to number of electrons.

Proton is positively charged, electrons are negativity charge while neutrons are neutral in nature.

Proton and neutrons are present in the nucleus of an element. On the other hand, electron revolves around the nucleus.

The atomic number of ³⁵Cl and ³⁷Cl is 17.

Number of protons = Number of electrons = 18.

Neutrons = atomic mass - atomic number

Neutrons of ³⁵Cl = 35-17 = 18

Neutrons of ³⁷Cl= 37- 17= 20

So, they have different atomic mass and number of neutrons.

Thus, we concluded that the mass number of ³⁵Cl and ³⁷Cl is 35 and 37 respectively.

learn more about atomic mass:

brainly.com/question/14250653

#SPJ4

6 0
2 years ago
All plants and animals need energy in order to survive. The diagram above shows how energy gets transferred among living things
Andre45 [30]
I believe it would be A, frogs and spiders, because frogs and spiders both eat grasshoppers. But I cannot see the diagram it talks about, so it's harder to tell.
8 0
3 years ago
How does periodic table summarize what we know about elements?
anyanavicka [17]

The periodic table is a representative of all elements we know today.


3 0
3 years ago
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