2. How many joules are
required to change the temperature of 120 ml of
water by 5 °C?

Energy required : 2508 J

Given

V= 120 ml

Δt = 5°C

Required

Heat needed

Solution

Heat can be formulated :

Q = m.c.Δt

m = mass, g  

c = specific heat, joules / g °C  (water=4.18 J.g °C)

∆T = temperature difference, ° C / K  

mass water = 120 g(density = 1 g/ml)

Input the value :

Q = 120 g x 4.18 J.g °C x 5 °C

Q = 2508 J

he would use the colour black

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).