I'LL RATE YOU BRAINLEIST IF YOU ANSWER THIS PLUS I REALLY NEED THI RTNOW What is the average atomic mass of strontium? Naturally occurring strontium consists of four isotopes,
Sr-84, Sr-86, Sr-87 and Sr-88. Below is the data concerning strontium.
Sr-84 Sr-86 Sr-87 Sr-88
0.56% 9.86% 7.00% 82.58%

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

You open a can of soda at room temperature and hear a hiss. which of the following factors has changed inside the container? a.) atmospheric pressure b.) temperature of gas c.) type of gas d.) amount of gas

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.)