Answer:
1. high pH
2. produce hydroxide ions
Answer:
Burning Paper
Explanation:
Burning Paper is an example of a chemical change because;
- A new substance called ''Ash'' is formed.
- It is an irreversible reaction.
Answer:
Molar masses of X and Z
Explanation:
To determine the mole percent of a mixture ( mole percent of unknown metals = number of mole of each of them divided the total of both the unknown salt × 100) since the percent by mass is know; we the molar mass of X and Z
mole = mass given / molar mass
Answer:
Your question is not specific enough so, I've given you a list of things that occurs, when a reaction has taken place.
It could be in the form of:
Heat or light given off or a colour change.
Hope this helps!
Answer:
178.56 cm3
Explanation:
V1/T1=V2/T2
V2=V1T1/T2
V1 (volume) is 200 cm3
T1 (temperature) is 60°C but convert into Kelvin
T2 (temperature) is 100 °C but convert into Kelvin
Plug in the values...
V2= (200 cm3)(60+273.15)/ (100+273.15)
V2=178.56 cm3
