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Oksana_A [137]
3 years ago
5

What does mechanical energy mean?

Chemistry
2 answers:
avanturin [10]3 years ago
8 0
Mechanical energy is the sum of potential energy and kinetic energy. It is the energy associated with the motion and position of an object.
Tamiku [17]3 years ago
3 0

Answer:

Mechanical energy is basically the energy of movement

For example, if I am running, im using Mechanical energy

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What is the molarity of a 250.0 milliliter aqueous solution of sodium hydroxide that contains 15.5 grams of solute? 6.2 M
Alchen [17]
Moles = 15.5 g / 40 g/mol = 0.3875 mol

M = 0.3875 mol / 0.250 L = 1.55M
8 0
4 years ago
Read 2 more answers
Why are halogens reactive?
erica [24]

<u>Halogens are reactive because:</u>

They have high electronegativity and also high nuclear charge. So, they are reactive and also gain an electron when they react with other elements.

Since they are very reactive, halogens are very harmful to living organisms. Some of the halogens are fluorine, chlorine, bromine, iodine, astatine. These are mostly non metals. Fluorine is one of the most reactive gas and also very toxic gas. When Fluorine reacts with glass along with small amounts of water, it forms silicon tetra fluoride (SiF4). Hence fluorine should be handled with substances like the inert organofluorine compound Teflon.

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3 years ago
A 98.0°C piece of cadmium (c=.850J/g°C) is placed in 150.0g of 37.0°C water. After sitting for a few minutes, both have a temper
Eduardwww [97]
The answer is 19.9 grams cadmium. 
Assuming there was no heat leaked from the system, the heat q lost by cadmium would be equal to the heat gained by the water:
     heat lost by cadmium = heat gained by the water
     -qcadmium = qwater
Since q is equal to mcΔT, we can now calculate for the mass m of the cadmium sample:
     -qcadmium = qwater
     -(mcadmium)(0.850J/g°C)(38.6°C-98.0°C)) = 150.0g(4.18J/g°C)(38.6°C-37.0°C)
     mcadmium = 19.9 grams
3 0
3 years ago
Draw a transition state for the reaction between ethyl iodide and sodium acetate
SCORPION-xisa [38]
Transition state <span> for the reaction between ethyl iodide and sodium acetateis shown below </span>

6 0
4 years ago
The element aluminum has an atomic number of 13. How many protons are in the nucleus of an aluminum atom?
morpeh [17]

Answer:

aluminium has 13 protons,13 electron,and 14 neutron.

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4 years ago
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