Insulation is an important part of the building process; we insulate our homes, schools and businesses to conserve energy. Insulation helps to help us cool in the summer and warm in the winter. Students were asked to design an insulating box, one that would keep ice cubes from melting using their choice of insulting materials: ~styrofoam ~cotton batting ~6 sheets of newspaper ~bubble wrap After leaving the containers over night, the class compared their results.

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?

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)

Why do lunar and solar eclipse not happen every month