45 POINTS Isabella finds a sample of an unknown metal. It has a luster and is silvery in 2 points
appearance. When she determined its volume, it was 25.0 ml. Its mass
was measured at 177.9 g. Using the chart, determine the identity of the
unknown metal. *
Mass
Tin Ball
25.5 9
Nickel Ball 31.29
Aluminum Ball 9.459
Zinc Ball
24.99
Initial Volume Final Volume
30.0 mL 33.5 mL
30.0 mL 33.5 mL
30.0 mL 33.5 mL
30.0 mL
33.5 ml
A) Tin
B) Nickel
C) Aluminum
D) Zinc

Both models are effective because they show the valence electrons, and these valence electrons indicate the reactivity of an element.

Idont really know sorry

First up write the aim
then write the materials reqd.
then the procedure which you follow
then observation
then conclusion
then you can write lab safety rules or precautions(you can avoid if u want).
lemme' give an example
aim: to observe the double displacement reaction
materials reqd: bacl2 and na2so4, test tubes and a dropper
procedure:
1. take bacl2 in a test tube and na2so4 in the other.
2. then pour bacl2 into na2so4 solution.
3. observe
observation:
you will see that a white precipitate is formed called baso4. along with that common salt or nacl is formed.
the equation is
bacl2+na2so4=baso4+2nacl
conclusion:
a double displacement reaction is observed.
hope it

Heat capacity = mcδtheat capacity = 2.676×10^3 j ..the heat capacity given is for 7.00 g of kcn,potassium cyanide which is equal to 0. mole of mole = mass  ÷ mr of kcn is 7  ÷ 65 =0.therefore: 0. of kcn liberates 2.676×10^3 j of heat1 mole   (2.676×10^3    ÷  0.107 )  × 1 =do the calculation to obtain 25009 j = 25kj