<h3>Further explanation</h3>
1.Atomic Number (Z) = Mass Number (A) - Number of Neutrons
neutrons = mass number-atomic number
Atomic mass Cl-37= 17
Mass number Cl-37=37
Neutrons = 37-17=20
2. Mass atom X = mass isotope 1 . % + mass isotope 2.%...
3. The energy in one photon can be formulated as
f = c / λ, so :
Energy is directly proportional to frequency and inversely proportional to the wavelength
So, as the frequency of photon increases, the energy of photon increases
4. Based on answer number 3 :
A. The wavelength becomes longer, and the energy decreases
Answer:
Balanced Chemical equation:
3Mg(s) + 2FeCl₃(s) → 2Fe(s) + 3MgCl₂(s)
Explanation:
Chemical equation:
Mg(s) + FeCl₃(s) → Fe(s) + MgCl₂(s)
Balanced Chemical equation:
3Mg(s) + 2FeCl₃(s) → 2Fe(s) + 3MgCl₂(s)
Solid magnesium react with solid iron(III) chloride and produce solid iron and magnesium chloride.
The oxidation state of iron changed from +3 to zero and that of magnesium is from zero to +2.
<em>Coefficient with reactant and product:</em>
Mg(s) 3
FeCl₃(s) 2
Fe(s) 2
MgCl₂ 3
<em>≈ 0,27 g/cm³</em>
<em>36.5 l = 36.5 dm³ = 36500 cm³</em>
<em>10 kg = 10000 g</em>
<em>d = m/V</em>
<em>= 10000g/36500cm³</em>
<em>≈ 0,27 g/cm³</em>
<u>Answer:</u>
Specific heat of a substance is the value that describe how the added heat energy of substance has the impact on its temperature.
Unit is <em>
</em>
<em>C = Q/m. ∆T</em>
<em>C – Specific heat </em>
<em>Q- heat energy (J)</em>
<em>M – Mass (Kg)</em>
<em>∆T- change in temperature (K) </em>
<u>Explanation:</u>
<em>Given data:</em>
<em>M= 140 g = 0.14 Kg</em>
<em>Q – 1080 Joules.</em>
<em>∆T – 98.4 – 62.2 = 36.2</em>
Substituting the given data in Equation
<em>Specific heat of Aluminium = 
</em>
Answer: What best describes the reaction is "A single replacement reaction takes place because zinc is more reactive than hydrogen."
