I’m so confused on number 13

Which combination would the president most likely use to convince congress to pass an economic stimulus bill?

Gretchen opens a high-end bakery in a busy section of town. customers pay top dollar for her quality baked goods. just two months later, emily opens a bakery across the street. she also sells baked goods but uses lower- quality ingredients and has a less appealing shop. some of gretchen's customers take their business to emily's bakery because her prices are lower. which industrial revolution-era system or movement is reflected in this scenario? o a. romanticism o b. marxism o c. social criticism o d. capitalism

Tim oxide reacts with the hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grains of sn