The Ice and steam points of a certain thermometer are found to be 20 cm apart. What temperatureis recorded in Celsius when the length of mercury theard is 5cm above the ice point mark?
The 4 signifies the
atomic weight, and the 2 subscribes the element's
atomic number(aka the number of protons in the atom).
Answer:
B
A solar flare is a sudden and intense release of electromagnetic radiation
Answer:
A vector is a quantity that has both magnitude and direction. DEF: A scalar is a quantity that has magnitude but NO direction.
Explanation:
If a potassium atom loses one electron than it becomes a +1 charge, because the electrons are negative and the nucleus is positive (the positive comes from the protons). The protons and electrons balance out so it has a neutral charge, but if the atom loses an electrons it has a positive charge, but if the atom gains an electron than it becomes negative. the charge (+/- and the number) of the atom depends on how many electron the atom gains/loses.
the answer is (D.) +1
I hope this helps.