Answer:
I believe the answer is Newton's Second Law
Explanation:
Newton's Second Law states that the acceleration of an object will count on how much mass and the amount of force that is applied.
The bowling ball was dropped from the 10th story window and had more force than when the ball was dropped from the 5th story window because the 10th story window gave the bowling ball more acceleration.
It’s 172 and you gotta divide it lol sorry I need help
Answer:
The chemical properties are then number 2 and 4:
- It reacts with metals to form metal hydroxide and hydrogen gas.
- It decomposes to form hydrogen and oxygen.
Justification:
The chemical properties can only be observed when the substance undergoes a chemical change, which is that the substance is transformed into one or more different substances. As result of a chemical change, the composition of the former substance changes, braking some chemcial bonds and formng new ones.
The number 1 states that the water reacts with metals to form metal hydroxide, meaning that the water is transformed into a new substance, the composition will not be H₂O andy more, since the atoms will be combined with atoms of different elements. Same, can be told about the number 2, which states that hydrogen and oxygen were obtained when water decomposed.
On the other hand, the thermal conductivity of water and the boiling point (the temperature at which the water evaporates) can be measured without changing the composition of the water, so those are physical properties.
Answer:
The usual way of converting black oxide to red oxide involves treating the black oxide with sulphuric acid and then roasting the intermediate product thus formed. lt is known that the amount of acid can be considerably less than the stoichiometric amount needed to convert all the black oxide to a sulphate.
Hope it helps :9