For each problem below, please refer to the following diagram. Calculate the missing values a. The painter weighs 300 newton, the helper weighs 150 newton, the board weighs 600 newtons.. The tension in rope A is 350 newtons. What is the tension in rope A?

b. The tension in rope A is Newtons, the helper weighs 100 newton, the board weighs 1500 newtons.. The tension in rope A is 1050 newtons. What is the weight of the painter?

100mg magnesium reacts with 20ml of 1.0m hcl

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst

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.)