C) in a straight lines is the closest thing to it bc waves normally come in a wave form
Trough* and it's wave hieght
Answer:
Electromagnetic waves can travel through empty space; mechanical waves can not
Explanation:
The salient differences between electromagnetic waves and mechanical waves is that electromagnetic waves can travel through empty spaces but mechanical waves cannot.
Mechanical waves always requires a material medium for their propagation. No known mechanical waves can pass through an empty vacuum.
Electromagnetic waves on the other hand can pass through vacuum. They do not require a material medium for propagation.
This makes them unlimited in their form and mode of propagation.
Answer:
0.38dm³ or 38mL
Explanation:
Given parameters:
molarity of HCl = 5.5M
volume of Mg(OH)₂ = 85mL
molarity of Mg(OH)₂ = 1.22M
Unknown:
Volume of HCl solution = ?
Solution:
we have to adopt the mole concept to solve this problem.
Complete reaction equation:
2HCl + Mg(OH)₂ → MgCl₂ + 2H₂O
For a standard acid titrated against a standard base,
aA + bB → cC + dD
A is the acid, B is the base
since number of moles = C x V
C is the molarity
V is the volume
CₐVₐ / CₓVₓ = a / x
a = acid
x = base
85mL to dm³ = 0.085dm³
since the unknown is Vₐ,
let us make it the subject of the expression;
Vₐ = (a/x) x ( CₓVₓ/ Cₐ)
Va = = 0.38dm³