Author: Anonymous

Metals are important in many functions in the human body, such as the functioning of nerve cells, muscle cells, the brain and the heart, the transport of oxygen and so on. Which from the following list of metals is most likely to be found naturally in the human body? Osmium (Os),   Thallium (Tl),   Palladium (Pd),   Chromium (Cr),   Barium (Ba)      

How many electrons are in the ion, Mg2+?

Which element has a electron configuration of 1s2 2s2 2p6?

A gas sample occupies 1.00 L at 120.°C and 1.00 atm. What volume will it occupy at STP?  (10pts)

Given the electronegativities below, which covalent single bond is most polar?

How many protons (p) and neutrons (n) are in an atom of Tc?

This exercise is called a: Watch Media Name: Q1 Video (00:07) Duration: 00:07 Added: 09 May 2020 07:25 PM Added By: Oladipo Eddo Description:   Tags:   Watch Media Name: Q1 Video (00:07) Duration: 00:07 Added: 09 May 2020 07:25 PM Added By: Oladipo Eddo Description:   Tags:  

An atom of 26Mg contains ________ neutrons.

You may have heard that mixing household bleach with household ammonia is dangerous, this is true! Many different reactions can occur when these are mixed, almost all of them bad. One of these is shown below, where sodium hypochlorite, NaOCl (in bleach), reacts with ammonia, NH3, to give NaCl and H2O (which are harmless), and hydrazine, N2H4, which is toxic. NaOCl + NH3 → NaCl + H2O + N2H4 What is the balanced version of this equation?

A study is measuring the effect of a new drug to treat Alzheimer’s disease. One group of patients is taking the drug and the other is taking a placebo. All participants have their beta amyloid levels measured after the study. Which statistical test is best to test for any change?