Answer:
independent variable - the thing you change
dependent variable - the thing you measure
control variables - the things you keep the same
-58 °C
The melting point is the same as the freezing point.
Answer:25.3 g of KNO₃ contain 0.25 moles.
Explanation:
Answer:
C.) 35
Explanation:
The mass is made up of the total protons and neutrons in an atom. Protons and neutrons both have a mass of 1 amu. Electrons are not included in this measurement because they have an insignificant mass (practically 0).
(17 protons x 1 amu) + (18 neutrons x 1 amu) = 35 amu
Therefore, if an atom contains 17 protons and 18 neutrons, the mass should be 35 amu.
