The atomic mass number is the number of neutrons and protons, and the atomic number is just the number of protons. Therefore, subtract the atomic mass number (35) from the atomic number (17) to find the number of neutrons. 35 - 17 = 18.

6 0

3 years ago

Two balloons having the same charge of 1.2 × 10-6 coulombs each are kept 5.0 × 10-1 meters apart. What is the magnitude of the r

Pavel [41]

The answer is 5.2 × 10-2 newtons.

To calculate this, we will use Coulomb's Law:
F = $\frac{k * Q_{1} * Q_{2} }{ r^{2} }$
where F is repulcive force, k is constant, Q is charge, r is distance between charges.

If:
 $Q_{1}$ = $Q_{2}$ = 1.2 × $10^{-6}$ C²
r = 5.0 × $10^{-1}$ C²
k = 5.0 × $10^{9}$ $\frac{N*m^{2} }{ C^{2} }$

Then:
 $F = \frac{5.0* 10^{-1} \frac{N* m^{2} }{ C^{2}} * 1.2 * 10^{-6} C * 1.2 * 10^{-6} C }{(5.0* 10^{-1} m)^{2}}$
⇒ $F= \frac{9 * 1.2 * 1.2 * 10^{-3} N }{25* 10^{1} }$
⇒ $F = \frac{12.96* 10^{-2} }{25} N$
⇒ $F = 5.2 N$

3 0

3 years ago

Give 3 examples of how anions are named

AlekseyPX

Answer:...

Here are several examples of anions:

Bromide - Br -

Chloride - Cl -

Fluoride - F -

Iodide - I -

Nitride - N 3-

Oxide - O 2-

Sulfide - S 2

Explanation:

6 0

3 years ago