Statement 2 is correct.
solids moving into solution is a physical change as the core structure of the molecules remain the same. evaporation of water and crystallization of salt are both physical changes as well.
The water does not change it's H2O chemical makeup because salt was dissolved into it.
Answer:
The answer to your question is
51.- 1.59 x 10⁻⁶
53.- NaHCO₃ + HCl ⇒ H₂O + CO₂ + NaCl
Explanation:
51.- Convert 0.00159 ml to liters
Use a rule of three
1000 ml -------------- 1 l
0.00159 ml --------- x
x = (0.00159 x 1) / 1000
x = 0.00000159 l = 1.59 x 10⁻⁶ l
53.- Sodium hydrogen carbonate (NaHCO₃) reacts with hydrochloric acid to produce salt, water and carbon dioxide.
Sodium hydrogen carbonate = NaHCO₃
Hydrochloric acid = HCl
Reaction
NaHCO₃ + HCl ⇒ H₂O + CO₂ + NaCl
water = H₂O
carbon dioxide = CO₂
salt = NaCl
Answer:
0.629 gramos de PH3 es la máxima de cantidad que puede ser producida.
Explanation:
¡Hola!
En este caso, dado que tenemos la siguiente reacción química, la cual se puede balancear directamente:
Podemos calcular la masa máxima de cualquier producto, digamos PH3, al comparar la masa de este, que 2 g the Ca3P2 y 1 g de H2O producen por separado y de acuerdo a la estequiometría:
De este modo, infermos que solamente 0.629 gramos the PH3 pueden ser obtenidos al ser el agua el reactivo límite.
¡Saludos!
An electron this is the smallest particle and it takes up the least mass because its negative charge makes it harder for electrons to have a place in an atom.
Answer:
yes
Explanation:
yes because u cant observe a physical change, u can't see with your eye the temperature
