The periodic table is arranged in rows and columns. From left to right along a row, the atomic number in each column
a. decreases by 2.
b. increases by 1.
c. decreases for gases.
d. increases for metals.

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1

Amanda pushes a box across the room with a force of 30 n. it accelerates at 5 m/s/s. what is the mass of the box? * 6 kg 1.16 kg 30 kg 5kg