Answer:
0.3415 J/g °C
Explanation:
M1 = 213.0g
c1 = ?
T1 = 70.2°C
T3 = 25.6 °C
T2 = 22.5°C
C2 = 4.186 J/g°C
Vol. of water = 250mL = 250cm³
p (density of water ) = 1g/L
p = mass / volume
mass (m) = density (p) * volume (v)
m = 1 * 250 = 250g
Heat loss by metal = heat gain by water
Q1 = Q2
Mc∇T = Mc∇T
Mc (T1 - T3) = Mc* (T3 - T2)
213 * c * (70.2 - 25.6) = 250 * 4.186 * (25.6 - 22.5)
(213 * 44.6)c = 1046.5 * 3.1
9499c = 3244.15
c = 0.3415 J/g.°C
The specific heat capacity of the metal is 0.3415 J/g °C
Answer:
Unit cells which are present per cubic centimeter of Ag = 
Volume = 
Edge length = 
Explanation:
(a)
Given that:-
The density of the solid Ag = 10.5 g/cm³
Molar mass of silver = 107.8682 g/mol
So, Moles present per cm³ of Ag =
=0.0973 mol/cm³
Also, 1 mole =
atoms.
So,
Atoms present per cm³ of Ag = 
Thus, answer = 
In FCC, the number of atoms in the unit cell = 4 unit cells
So,
Unit cells which are present per cubic centimeter of Ag = 
<u>Unit cells which are present per cubic centimeter of Ag =
</u>
(b)
The reciprocal of the unit cell/cm³ is the volume of the unit cell.
So, 
<u>Volume =
</u>
(c)
Also, Volume =
Thus, edge length =
=
<u>Edge length =
</u>
Answer:
Thermal energy is transferred between particles that are in direct contact with each other.
Thermal energy is transferred between objects of different temperatures.
Thermal energy is transferred from fast-moving particles to slow-moving particles.
Explanation:
The wavelength is 4.0 * 10^-13 m while the frequency is 7.5 * 10^20 s−1
Using the formula;
E =hf
Where
E = Energy of the photon
f = Frequency of photon
h = Plank's constant = 6.6 * 10^-34 Js
To obtain the energy in Joules;
E = 3.02 × 10^11 J/mol/6.02 * 10^23 mol
= 5 * 10^-13 J
f = E/h
f = 5 * 10^-13 J/6.6 * 10^-34 Js
f = 7.5 * 10^20 s−1
f = c/λ
c = speed of light = 3 * 10^8 m/s
λ = c/f
λ = 3 * 10^8 m/s/7.5 * 10^20 s−1
λ = 4.0 * 10^-13 m
The wavelength is 4.0 * 10^-13 m while the frequency is 7.5 * 10^20 s−1
Learn more: brainly.com/question/2393994
The correct answer is D. Valence