Answer:
Carbon
Carbon atoms have 6 protons.
The answer is A, mass and volume.
The equation for density, <span>ρ,</span> is ρ = m/V. m is mass and V is volume.
Answer:

Explanation:
Hello there!
In this case, according to the given information, it turns out necessary for us remember that the first-order kinetics is given by:

Whereas the 27.5% complete means A/Ao=0.275, and thus, we solve for the rate constant as follows:

Then, we plug in the variables to obtain:

Regards!
It depends if it occurs naturally it has oxidation number of 0
but when it react with other element it has an oxidation number of -1