Identify each category of substance as soluble or insoluble in water. Salts of Group 1 elements Soluble Most halide (Br-, Cl-, and I-) salts Soluble Most nitrate salts Soluble Most silver salts Soluble Most carbonate and phosphate salts InsolubleSuppose you are studying an unknown solution based on its precipitation reactions with other solutions, resulting in this data table. Na2SO4 NaCl Na2CO3 Unknown Precipitate Precipitate No reaction Which compounds might be your unknown? Select one or more: A. Ba(NO3)2 B. NaNO3 C. AgNO3 D. Ca(NO3)2 E. Pb(NO3)2 F. Sr(NO 3)2

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.