Answer:
11.35 g/cm³
Explanation:
If your rounding then 11.4. hope this helps :)
Firstly calculating number of moles of hcl disssolved. The answer would be in the pic above. Concentration of hydrogen ions can be calculated by using that mole amount dividing by 3litres of solution to get 0.003196. Hence the ph of solution will be -log10(h+ concentration) which is equal to 2.495
Answer:
number of individuals
Explanation:
calculated by dividing the number of people by area
Answer:
28%
Explanation:
Primero <u>calculamos los mililitros de etanol presentes en la primera solución</u>:
- 200 mL * 70/100 = 140 mL etanol
Para calcular el nuevo porcentaje en volumen, dividimos los mililitros de etanol (<em>que permanecen iguales durante el proceso de dilución</em>) entre el volumen final.
- Volumen final = 200 mL + 300 mL = 500 mL
- % Volumen de Etanol = 140 mL / 500 mL * 100% = 28%
1 proton = 1 positive charge
1 electron = 1 negative charge
+21-19= <u>+3</u>
