Answer:
The correct answer will be "18.25 g".
Explanation:
The given values are:
Specific heat,
C = 0.45 J/g・°C
Heat involved,
q = 801 J
Temperature,
ΔT = 120.0°C-22.5°C
= 97.5°C
As we know,
⇒ 
On substituting the given values, we get
⇒ 
⇒ 
First, let's explain the variables. F means force, m means mass, and a means acceleration. F is measured in Newotns [N], mass is measured in kilograms [kg], and acceleration in measured in meters per squared second [m/s²].
Now let's mover on the first problem.
Given
m = 1000 kg
a = 3 m/s²
According to the second law of Newton, the force is equal to the acceleration multiplied by the mass.

The answer is 3000 N.
The second problem is smiliar.
Given
m = 70 kg
F = 250 N
We use the same formula from before, and use a bit of algebra to adapat it to our needs.

The answer is 24 1/7 s/m^2.
Answer:
Explanation:
The name of the compound is:
Al(NO₃)₃ is Aluminium nitrate
Aluminium nitrate is an ionic compound formed when Al loses 3 valence electrons to the nitrate.
Formula of cation: A cation is a positive charged specie
Al³⁺
Formula of anion: Anion is a negatively charged specie;
NO₃⁻
<span>The carbon sp2 is hybridized in any cabozxylic acid oninon and it forms one simga bond with each oxygine and one sigma bond with carbon backbone.</span>