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schepotkina [342]
2 years ago
11

U wanna talk with me hit me up

Chemistry
1 answer:
anzhelika [568]2 years ago
3 0

Answer:

No thanks bro.

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Which process is an example of a chemical change? drying clothes in the dryer heating a cup of tea chopping a tree activating a
coldgirl [10]
Answer:

Activating a glow stick is the example of a chemical change, as snapping one will cause a chemical reaction, causing the glow. All of the other options are physical changes because nothing new is formed. Hope this helps!
8 0
3 years ago
Which of the following measurements is expressed to three significant figures?
tiny-mole [99]
D. is the answer
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8 0
3 years ago
When MgCl2 dissolve in water does the Mg and Cl split apart?
Artyom0805 [142]

Answer:

Yes they do,

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7 0
3 years ago
.
konstantin123 [22]

Answer:

the temperature of the star

Explanation:

The color of stars usually indicates the temperature of the star.

A star that is relatively cold usually shows a typical red color.

The hottest stars have a blue color.  

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  • A broad spectrum between blue, the hottest color,  and red the coldest is used.
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8 0
2 years ago
How many atoms of oxygen are in 0.100 mol of silicon dioxide?
lys-0071 [83]
1) Silicon dioxide formula: SiO2  ....... 2 is a subscript for the O atom

2) From the formula you have 1 molecula of SiO2 contains 1 atom of SiO2

3) Then, 0.100 mol of SiO2 contains 0.1 mol of Si

4) Multiply by Avogadro's number: 0.100mol *  6.022*10^23 atoms/mol= 6.02*10^22 atoms

Answer: 6.02*10^22 atoms
3 0
3 years ago
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