Hi, I need some help with this question. Could anyone help? Tammy has 15 coins that total $1. What coins does she have and how many of each? Is there more than one answer? Find all the possibilities. Thanks, Hannah
If I add all the numbers from 1-100 what do I get? This question has been confusing me for a while...
7. Which of the following is true? A. Cesium is the most active group 1 metal, because its valence electron is held more tightly than the others in the same group. B. Group 1 elements are more reactive than the group 2 elements because they have more valence electrons to lose....
15. When chromium loses two electrons, its configuration changes to A. [Ar]4s1. B. [Ar]3d4. C. [Ar]4s13d5. D. [Ar]4s13d4. I'm guessing it's B but I just want to double check
Hi! I need some help with a problem in the packet I have to complete over the summer. Can anyone help? at uncle joe's farm there are chickens and sheep. tommy counted the heads and got a total of 12 heads. then he counted feet and got a total of 38. can you figure out how ...
a 2.00 kg rock is dropped from a bridge to the water 50.0m below. what is the velocity as it hits the water? what is its kinetic energy as it hits the water?
SPECTROPHOTOMETRIC ANALYSIS OF STEEL I have a known molarity of KMnO4 solution. It was diluted by a factor of 20. Its absorbance is now 1.18. The length of the path is 1 cm.What is the molarity of the new solution.
Atoms of the group 15 elements tend to react to form _______ ions. A. 5+ B. 32 C. 52 D. 3+ My guess is D. Which is correct?
Solve the triangle using the law of cosine: a= 5 b= 6 y= 35