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Rom4ik [11]
2 years ago
8

Mendeleev is the scientist who first developed

Chemistry
1 answer:
Schach [20]2 years ago
7 0
Dmitri Mendeleev is the scientist who first developed the periodic table.

He is a Russian chemist and inventor who formulated the periodic law and created the periodic table of elements. He corrected some of the properties of the elements. Now, we can easily locate the elements we wanted to identify. With the help of Mendeleev, studying chemistry is not that difficult because he tried to simplify some of the concept that was complex before.
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Someone please help me!!!!
Artyom0805 [142]

Double replacement :

2Na₃PO₄+3CaCl₂⇒6NaCl + Ca₃(PO₄)₂

<h3>Further explanation</h3>

1. A single replacement reaction is a chemical reaction in which one element replaces the other elements of a compound to produce new elements and compounds

2. Double-Replacement reactions. Happens if there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product

3. Combination/syntesis : 2 or more reactants combine to form a new compound

4. Decomposition : the reactant is decomposed into 2/more products

If we look at the reaction options available, all of them can be included in the double replacement reaction, but we only choose the reaction from Sodium phosphate and Calcium chloride which leads to options: C because it is balanced (from the number of atoms in the same reactant and product) and is in accordance with the chemical formula of each compound (both products and reactants)

3 0
3 years ago
All of the Gathered in an investigation must be recorded. (Fill in the blank)
Zigmanuir [339]
The answer is "Incidents"
4 0
3 years ago
A(n) _____ is the smallest unit of an element that still retains the chemical and physical properties of that element.
Usimov [2.4K]
An atom, I believe.
7 0
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Read 2 more answers
Grains of sugar dissolve more quickly in tea than do sugar cubes. Which answer correctly describes why this occurs?
AnnZ [28]

Answer:

sugar cube is at great pressure

Explanation:

this is because great pressure means its more solid

6 0
2 years ago
Which solution when mixed with a drop of bromthymol blue will cause the indicator to change from blue to yellow?
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