7. Which of the equations below contains the most oxygen atoms? a. 2AgNO3 + K2SO4 - Ag250. + 2KNO
b. 4Fe + 6H20 - 3024Fe(OH),
C 6CO2 + 6H20 - CH20, +602
d. CzH4 + 3022002 + 2H20

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

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