Answer:
The intensity in 10-3 W/m2 at 39.3 m is
Explanation:
Given Data:
frequency=1,054 Hz
intensity=6.429 mW/m^2
distance=7.945 m.
Required:
intensity in 10^-3 W/m^2 at 39.3 m=?
Solution:
Intensity at distance r from point source which is emitting sound waves of power P is given by the following formula:
Intensity=I=
Where:
P is the power
r is the distance
The intensity in 10^-3 W/m2 at 39.3 m is
Answer:
A. Provides H in water - Arrhenius acid
B. Provides OH - in water - Arrhenius base
C. Proton donor - Bronsted-Lowry acid
D. Proton acceptor - Bronsted-Lowry base
E. Electron pair donor - Lewis base
F. Electron pair acceptor - Lewis acid.
Explanation:
Definition:
A Lewis base is any substance, such as the OH- ion, that can donate a pair of nonbonding electrons. A Lewis base is therefore an electron-pair donor.
A Bronsted-Lowry acid is a chemical species that donates one or more hydrogen ions in a reaction. Also, a Bronsted-Lowry base accepts hydrogen ions.
An Arrhenius acid is a substance that dissociates in water to form hydrogen ions or protons. In other words, it increases the number of H+ ions in the water. Also, an Arrhenius base dissociates in water to form hydroxide ions, OH-.
<u>Substance</u><u>:</u><u>-</u>
- A substance is matter which has a specific composition and specific properties.