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Sauron [17]
3 years ago
10

What contribution did john dalton make to chemistry?

Chemistry
1 answer:
damaskus [11]3 years ago
5 0
The son of a weaver, Dalton's major contribution to the field of chemistry is his atomic theory proposed in 1803.
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How many chloride ions are in a 220 grams of calcium chloride?
steposvetlana [31]

Answer: Hello, There! Your Answer is Below

2.4 x 1024 ions

Explanation:

220 g of CaCl₂  =  X moles

Solving for X,

                                                X  =  (220 g × 1 mol) ÷ 110.98 g

                                                X  =  1.98 moles

As,

                          1 mole contained  =  1.20 × 10²⁴ Cl⁻ Ions

Then,

                   1.98 mole will contain  =  X Cl⁻ Ions

Solving for X,

                                                 X  =  (1.98 mol × 1.20 × 10²⁴ Ions) ÷ 1mol

                                                 X  =  2.38 × 10²⁴ Cl⁻ Ions

Hope this Helps!

Have a great DAy!

`August~

3 0
2 years ago
Carbon dioxide in the oceans is affecting its pH.<br><br> a. True<br> b. False
monitta
Its true it affects the pH balance
7 0
2 years ago
Give the chemical symbol or name for each of the following elements, as appropriate: (a) carbon, (b) nitrogen, (c) titanium, (d)
Elanso [62]

The correct answers are ,

A) C

B) N

C) Ti

D) Zn

E) Fe

F) Phosphorus

G)Calcium

H) Helium

I) Lead

J) Silver

<h3>How are elements named?</h3>

Elements have been given names based on a variety of factors, <u>including their characteristics</u>, the compound or ore from which they were extracted, the method by which they were found or acquired, mythical characters, locations, and well-known individuals. Some components have <u>names that are descriptive and are based on one of their attributes.</u>

The International Union of Pure and Applied Chemistry chooses the official element names and symbols (IUPAC). However, different nations frequently use similar names and symbols for elements. Official names and symbols for elements are not given until after their discovery has been confirmed. The discoverer may then suggest a name and a symbol.

There are name standards for several element groupings. Names of halogens end in -ine. All noble gas names, save helium, end in -on. The names of most other elements finish with -ium.

To learn more about elements:

brainly.com/question/14347616

#SPJ4

6 0
1 year ago
I NEED HELP FAST!!!!! Can you tell me about the location of electrons in atoms and how energy affects their location??? I have a
Art [367]
Their locations can vary depending on the molecule they are associated with but they are usually in a "cloud " that is on the outside of an atom/molecule and if the atom is unstable the  electrons tend to be located farther away from the atom.
5 0
3 years ago
2H2 + O2 --&gt; 2H2O can be classified as what type of reaction?
Sveta_85 [38]
Combustion reaction
Key: O2
O2 is normally in a chemical formula when you are used to burn anything, so basically, anything with O2 involves burning.
5 0
3 years ago
Read 2 more answers
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