This attached picture !!

The math department is putting together an order for new calculators. The students are asked what model and color they prefer. The math department is putting together an order for new calculators. The students are asked what model and color they prefer. The math department is putting together an order for new calculators. The students are asked what model and color they prefer. The math department is putting together an order for new calculators. The students are asked what model and color they prefer. The math department is putting together an order for new calculators. The students are asked what model and color they

Explanation:

The math department is putting together an order for new calculators. The students are asked what model and color they prefer. The math department is putting together an order for new calculators. The students are asked what model and color they prefer.

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

the answer is barium and copper bromide