Science Homework Help - Tagged with chemistry

A 0.10 M solution of a weak acid HA turns red in phenol red and yellow in thymol blue. Determine the approximate pH of HA.  

Posted by seventhheaven May 20, 2013 at 8:48 AM via web. 1 educator answer. »

How to construct an ionic equation for the reaction of magnesum and dilute acid.

Posted by tamanimat May 20, 2013 at 8:48 AM via web. 1 educator answer. »

If the pH is 2.5 what is [H3O+] and [OH-] and if pOH is 4.6 what is [H3O+] and [OH-]    

Posted by mpumpkin May 20, 2013 at 2:28 AM via web. 1 educator answer. »

What is the pH of a 0.00750 M H2SO4 solution?

Posted by bec-bec May 20, 2013 at 1:56 AM via iOS. 1 educator answer. »

41g of glass at 95 deg. C is put in 175g of H2O at 21 deg. C in an insulated container. What is the final temp. of the H2O mixture? Spec. heat...

Posted by jokojoko May 19, 2013 at 10:44 PM via iOS. 1 educator answer. »

Explain why different molecules have different sequences of energy in their molecular orbitals?

Posted by kumarvaibhav123 May 19, 2013 at 7:49 PM via web. 1 educator answer. »

What does this mean and how do I do it? I have a test tomorrow and I don't understand this...  Give  the  general  formula  and  class...

Posted by madikarrots May 19, 2013 at 4:55 PM via web. 1 educator answer. »

Name and e xplain acid HBr O 3?

Posted by varka May 19, 2013 at 2:19 PM via web. 1 educator answer. »

What is the differences between calcination and roasting?

Posted by spsaroj May 19, 2013 at 2:54 AM via web. 1 educator answer. »

H2CO3, write the expression for Ka for the acid. Assume only one hydrogen is ionized.  

Posted by bubblelots101 May 18, 2013 at 10:11 PM via web. 1 educator answer. »