Answer:
a.) because your ankle is taking in cold energy from the cold pack
Explanation:
all of the other ones say heat, which is not applied in this question
Answer:
From this I could observe the effect of concentration and surface area on the reaction rate. The concentrated acids can dissolve a large piece of limestone in a few days because the higher reactant concentration leads to more frequent collisions which increases the reaction rate. Acid rain is diluted with water which is why it can take decades. However, statues with intricate carvings break down more quickly because it increases the surface area which increases reaction rate.
Explanation:
Explanation:
When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral. ... Chemically, we say that the atoms have formed bonds.
Answer:
Moles: 
Molar mass: 
Explanation:
Hello,
In this case, we can use the ideal gas equation to compute the moles of the gas sample as shown below:
Thus, we should use the pressure in atm as follows:
Moreover, the molar mass is obtained by dividing the given mass by the obtained moles:
Best regards.
the unnamed spacecraft which travels to Mars, will have the greatest weight on the Earth.
