Answer:
40.02 calories
Explanation:
V = 10 mL = 10g
we know t went <em>up</em> by 4°C, this is our ∆t as it is a change.
Formula that ties it together: Q = mc∆t
where,
Q = energy absorbed by water
m = mass of water
c = specific heat of water (constant)
∆t = temperature change
Q = (10 g) x (4.186 J/g•°C) x (4°C)
Q = 167.44 J
Joules to Calories:
167.44 J x 1 cal/4.184 J = 40.02 calories
(makes sense as in image it is close to the value).
Answer:
c. ionic compound
Explanation:
Ammonium fluoride -
It is an inorganic salt , which has the molecular formula of .
As it is a salt , it is ionic in nature , i.e. , it has a cationic part and an anionic part , i.e. ,
is the cationic species .
And
is the anionic species.
is a crystalline solid , just like most of the salts , and has a very s alt salty taste to it.
Hence, from the given option ,
The correct option is ionic compound.
Ammonium fluoride is the inorganic compound with the formula NH4F. It crystallizes as small colourless prisms, having a sharp saline taste, and is exceedingly soluble in water.
The number of electrons in the outermost shell determine the reactivity.
The subatomic particle that makes the atoms of each element different are the protons. The specific number of protons for a particular element distinguishes one element to another.
They are too small to see with the naked eye