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NARA [144]
3 years ago
13

SOMEONE HELP ME PLEWSE !

Chemistry
1 answer:
jasenka [17]3 years ago
7 0
I gave the opportunity to help you for now on
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Which of the fallowing elements is the most reactive?
Alexxx [7]
Which elements are most reactive?

The alkali metals, found in group 1 of the periodic table (formerly known as group IA), are very reactive metals that do not occur freely in nature. These metals have only one electron in their outer shell. Therefore, they are ready to lose that one electron in ionic bonding with other elements.

Fluorine is the most reactive
5 0
4 years ago
What is the change in heat energy when 132g of copper at 32.2°C is raised to 45.0oC? The specific heat of copper is 0.385 J/g °C
Rudik [331]
Heat energy can be calculated by using the specific heat of a substance multiplying it to the mass of the sample and the change in temperature. It is expressed as: 
<span>
Energy = mCΔT
</span><span>Energy = 132 (0.385) (45 - 32.2)
</span><span>Energy = 650.50 J</span>
4 0
3 years ago
A submicroscopic particle suspended in a solution has a volume 1.3um^3. What is this volume in liters?
k0ka [10]
1000 liters = 1 m^3

and
1.3um^3 = 1.3x10^(-6)m^3

multiply both sides of the first equation by 1.3x10^(-6)
1.3x10^(-6) * 1000 liters = 1.3x10^(-6) * 1m^3
1.3x10^(-3) liters = 1.3x10^(-6) m^3
5 0
3 years ago
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What can be said about the polarity of water?
goldenfox [79]
Water is a bent molecule, so it is polar.
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3 years ago
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Fluorine and Nitrogen react to form a covalent molecule. Which best describes the molecule they will make?
mafiozo [28]
I think a is the correct answer
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