Need help on worksheet B. Match each term to its description or definition. (4 points)

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A. Heat

B. Thermal energy

C. Conduction

D. Convection

E. Radiation

F. Specific heat

G. Enthalpy

H. Entropy

Heat required to raise 1 g of a substance 1°C

The transfer of thermal energy between objects

A measure of the randomness in a system

Heat transfer through direct contact between molecules

Heat given off or absorbed in a reaction

Heat transfer by way of electromagnetic waves

Total kinetic energy of all molecules in a system

Heat transfer through movement of liquids or gases

1.F

2.D

3.H

4.C

5.G

6.E

7.B

Explanation:

i think this is all correct. im like 90% positive

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g