Copper(ii) sulfide, cus, is used in the development of aniline black dye in textile printing. What is the maximum mass of cus which can be formed when 38. 0 ml of 0. 500 m cucl2 are mixed with 42. 0 ml of 0. 600 m (nh4)2s? aqueous ammonium chloride is the other product.

Did the universe cool off or get hotter as it expanded after the 'big bang"?

Which statements are true for invasive species? 1. they always stabilize an ecosystem. 2. they’re always successful in adjusting to a new habitat. 3. they often compete with the native species for resources. 4. they have the ability to displace the native species. 5. they’re always pests.

Consider a normal distribution of frog weights with u = 500 grams and o = 65 grams. a sample of size 2,000 is drawn from this population. approximately how many of the 2,000 cases would you expect to find between 435 and 565?