B. HNO3 because it is copper and can not move the place of hydrogen's atom from the acid
Answer:
A)The total number of protons plus neutrons= Weight of an atom
Yes, you can. If you heat it in the microwave (make sure not to put thin plastic in there, as the plastic will melt), or add hot water (steaming, not boiling) to it, it will turn back into liquid. For the microwave, make sure you have the lid of the honey jar off, and check it every 10-15 seconds in the microwave until it turns back to liquid. Make sure to not put it in there for too long; it will boil over if you heat it too much!
Answer:
Explanation:
Many common everyday services such as weather forecasting, remote sensing, satellite navigation systems, satellite television, and some long-distance communications systems critically rely on space infrastructure. ... Of the sciences, astronomy and Earth science benefit from space technology am in 6th grade btw
Answer:
Chilling the hydrogen peroxide solution
Explanation:
The MnO₂ is acting as a catalyst.
Chilling the hydrogen peroxide solution reduces the average kinetic energy of the H₂O₂ molecules.
Fewer of them will have enough kinetic energy to overcome the activation energy of the reaction. The rate will decrease.
A is wrong. Using a larger amount of solution does not increase the number of H₂O₂ molecules that can reach the surface of the catalyst per second. There is no effect on the rate.
B is wrong. Increasing the mass of the cube increases its surface area. More molecules of H₂O₂ can reach the surface of the catalyst per second. The rate increases.
D is wrong. Smashing the cube into pieces vastly increases the surface area, so the rate increases
