Pls answer asap this is due soon

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

One nanometer is equal to how many meters?

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.