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2 years ago

Which property do metalloids share?

1 answer:

6 0

Metalloids share many similar properties including: They appear to be metal in appearance, but are brittle. They can generally form alloys with metals. Some metalloids such as silicon and germanium become electrical conductors under special conditions. Mark me brainliest please

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The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs? A. Th

Ede4ka [16]

Answer: In a chemical reaction, the total mass of the particles in the system stays the same

Explanation:

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that total mass on the reactant side must be equal to the total mass on the product side in a chemical reaction.

Every balanced chemical reaction follows law of conservation of mass.

For Example: Formation of water molecule

$2H_2+O_2\rightarrow 2H_2O$

Total mass on reactant side = $[2(2\times 1)+(2\times 16)]=36g/mol$

Total mass on product side = $[2((2\times 1)+16)]=36g/mol$

Hence, in a chemical reaction, the total mass of the particles in the system stays the same

5 0

2 years ago

Describe the heat involved if you touch a flask containing an on-going endothermic reaction

juin [17]

The flask would feel cooler than when the reaction first started.

8 0

3 years ago

Define electronegativity. Where on the periodic table is the highest? Explain why this is the case.

geniusboy [140]

Answer:

Explanation:

Electronegativity is a measure of the ability of an atom to attract the electrons when the atom is part of a compound. Electronegativity values generally increase from left to right across the periodic table. The highest electronegativity value is for fluorine.

5 0

2 years ago

3. How many moles are 1.707 x 10^24 atoms of carbon?

Paraphin [41]

Answer:

2.835 moles of carbon

Explanation:

By definition, there are 6.022x10^23 atoms (or compounds) in one mole.

Write and use this as a conversion factor:

(6.022x10^23 atoms)/mole

(1.707 x 10^24 atoms of carbon)/((6.022x10^23 atoms)/mole) = 2.835 moles carbon

8 0

1 year ago

An example of an extensive property of matter is

timurjin [86]

An example of an extensive property of matter is "mass"

6 0

2 years ago

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