In a metallic bond, atoms of the metal are surrounded by a constantly moving "sea of electrons". This moving sea of electrons enables the metal to conduct electricity and move freely among the ions.
Answer:
D is correct
Explanation:
because
we know that
density of lead is 11.36 g/cm3
and
density of tin is 7.31 g/cm3
so..
density of alloy by mixing 50/50
=(11.36+7.31)/2 g/cm3
=18.67/2 g/cm3
=9.33 g/cm3
The mass of the piece of wood is 35.58 g.
Joule = M × T × C
Where, M = mass
T = change in temperature(42C-23C=19 C)
C = specific heat capacity = 1.716 joules/gram
Substituting the values in the equation,
1160 = M × 19 × 1.716
M = 1160/32.604 = 35.58 g
Therefore, the mass of the piece of wood = 35.58 g
<h3>What is meant by specific heat capacity?</h3>
A material's specific heat capacity, which is defined as its heat capacity divided by its mass, determines how much energy is required to increase a gram's temperature by one degree Celsius (or one Kelvin)
<h3>What is mass?</h3>
Mass is the quantity of matter in a physical body.
To learn more about specific heat capacity visit:
brainly.com/question/1747943
#SPJ4
Answer:
Mg(s) + 2H⁺(aq) ⟶ Mg²⁺(aq) + H₂(g)
Explanation:
A net ionic equation shows all the ionic substances as ions and shows the correct state of each substance.
Answer:
Explanation:
(a) Balanced reaction of gallium with oxygen is as follows:
(b) 
Multiply the carbon dioxide by 6 to balance carbon as follows:
After that multiply H2O by 7 to balance hydrogen as follows:
Finally balance oxygen by multiplying O2 by 19/2. Therefore, balanced reaction is as follows:
(c) 
first balance calcium, by multiply 
by 3 as follows:
After that balance phosphorous by multiplying 
by 2 as follows:
Finally balance Na by multiplying NaCl by 6. Therefore, balance reaction is as follows:
