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wolverine [178]
2 years ago
7

(9) An element which is used to observe the physical property brittlness

Chemistry
1 answer:
SCORPION-xisa [38]2 years ago
5 0
I would say 3, but I’m not 100% sure
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What is the mass (in grams) of 3.03 × 1024 molecules of carbon dioxide molecules?
krek1111 [17]
1 mole of CO2 has 6.02 x 10^23 molecules of CO2. Say x moles of CO2 has 3.0x10^23 molecules of CO2. Therefore x = 3/6.02 = 0.50. M = 0.50 * (12 + 2x16) = 0.50 * 44 = 22g
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3 years ago
During the formation of the compound sodium chloride, the correct symbol and charge for each of the ions must be...
Xelga [282]

Answer : The correct symbol and charge for each of the ions must be Na^{+1} and Cl^{-1}.

Explanation :

  • Covalent compound : It is defined as the compound which is formed by the sharing of electrons between the atoms forming a compound.

The covalent compound are usually formed when two non-metals react.

  • Ionic compound : It is defined as the compound which is formed when electron gets transferred from one atom to another atom.

Ionic compound are usually formed when a metal reacts with a non-metal.

As we know that the sodium chloride is an ionic compound in which sodium is an alkali metal and has one valence electron and chlorine is a non-metal and has 7 valence electrons.

When sodium atom donates an electron to a chlorine atom then it forms an ionic compound that is sodium chloride (NaCl) and the resulting positive ion Na^{+1} and negative ion Cl^{-1} form a stable ionic compound.

Hence, the correct symbol and charge for each of the ions must be Na^{+1} and Cl^{-1}.

4 0
3 years ago
Oxygen gas is generated in the laboratory by the thermal decomposition of potassium chlorate what volume of oxygen is generated
Kruka [31]
The answer is 2 potassium
8 0
3 years ago
What solution is placed when plating metal with gold?
miskamm [114]

Answer:

The metal atoms that plate your object come from out of the electrolyte, so if you want to copper plate something you need an electrolyte made from a solution of a copper salt, while for gold plating you need a gold-based electrolyte—and so on

Explanation:

Plz give brainiest

stay safe

5 0
4 years ago
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One of the main forces driving plate tectonics is the dissipation of heat from the mantle, through convection or large scale upw
IRINA_888 [86]

Answer:

A)

Explanation:

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