16
Explanation:
The subatomic particles in any atom are made up of protons, neutrons and electrons in it.
Protons are the positively charged particles.
Neutrons do not carry any charges.
Together with protons, they occupy the nucleus.
Electrons are negatively charged particles.
In an atom of B - 11;
11 is the mass number
mass number = number of protons + number of neutrons.
Total subatomic particles = proton + neutrons + electrons
TSP = mass number + electrons
In B, the atomic number = 5 = number of electrons
TSP = 11 + 5 = 16
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Atomic number brainly.com/question/5425825
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15.0 meters = 15,000 millimeters
Answer:
other the effect of temperature on plants
According to boiling point elevation equation:
Δ T = i Kb m
when ΔT (change in boiling point) = 7.10 C°
and i (van't Hoff factor)= 1
and Kb = 0.520
so, by substitution:
7.10 = 1*0.520 *m
m = 7.1 / 0.52 = 13.65 m
Through Air sounds travels approximately 343 meters/second. Why the difference? Because the closer together the molecules in a substance are, the faster sound will travel through that medium.