If an element’s atomic number is 15, how many electrons must it have in order to be neutral?

1 answer:

6 0

Answer:

Explanation:

atomic number is the same as protons so 15 protons and 15 electrons would be neutral

You might be interested in

Allisa [31]

Answer: Picture

Explanation: I got it right

8 0

3 years ago

IRISSAK [1]

Answer:

Final temperature = 28.0 degrees C.

Explanation:

heat absorbed = mass * specific heat * rise in temperature.

The specific heat of water is 4.186 J /g/C so we have the equation

209 = 10 * 4.186 * x where x is the temperature increase

41.86x = 209

= 5 degrees C.

7 0

3 years ago

WINSTONCH [101]

D but I’m not to sure about it

4 0

3 years ago

Neporo4naja [7]

Answer:

2000 L

General Formulas and Concepts:

Atomic Structure

Gas Laws

Ideal Gas Law: PV = nRT

Explanation:

Step 1: Define

[Given] 8.8 moles gas

[Given] 0.12 atm

[Given] 56 °C = 329.15 K

Step 2: Solve for V

Substitute in variables [Ideal Gas Law Formula]: $\displaystyle (0.12 \ atm)V = (8.8 \ mol)(0.0821 \ \frac{L \cdot atm}{mol \cdot K})(329.15 \ K)$
Isolate V: $\displaystyle V = \frac{(8.8 \ mol)(0.0821 \ \frac{L \cdot atm}{mol \cdot K})(329.15 \ K)}{(0.12 \ atm)}$
Multiply/Divide [Cancel out units]: $\displaystyle V = 1981.7 \ L$