Tuesday
September 2, 2014

Posts by yui


Total # Posts: 10

chemistry
Which of following statements correctly describes energy levels? A. Electrons can never move to a higher or lower energy level. B.In it's outermost energy level, oxygen has 4 valence electrons. C. The second energy level holds a maximum of eight electrons. D. The greater ...
August 23, 2014

chemistry
Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? A. Magnesium has a 22 oxidation number and chlorine has 1+ oxidation number. B. Magnesium has 1+ oxidation number and chlorine has a 12 oxidation number. C. Magnesium has 22 ...
August 23, 2014

chemistry
What is the proper name for MgSO4/H2O? A. Manganese sulfate hexahydrate B. Magnesium sulfite dihydrate C. Magnesium sulfite heptahydrate D. Magnesium sulfate heptahydrate
August 23, 2014

chemistry
Which statement correctly describes an atom of the element helium? A. An atom of helium has its valence electrons in it's first energy level. B. An atom of helium most similarly behaves like an atom of hydrogen since it is in the same period. C. An atom of helium has a ...
August 23, 2014

chemistry
When water decomposes into oxygen and hydrogen, the mass A. increases B. varies according the number of hydrogen and oxygen molecules that form. C. remains constant D. decreases
August 23, 2014

Literatue- Ms. Sue help me plz
As in Hawthorne's Young Goodman Brown the autobiographical story of Sojourner Truth is written on all of these levels except? (A). interior narrative B. exterior commentary C. social commentary D. dramatic narrative
July 5, 2014

7th Grade Science
D, is the correct answer. Just used A as an answer and it was wrong.
August 21, 2012

science
Calculate the volume of distiled water to prepare 10%w/v solution of solute if 8g of the solute is to be used.
March 4, 2011

chemistry
how will u prepare 500g of aqueos solution which is 10% NaOH by mass?(%W/W)
March 4, 2011

banyan elementary
if 1 row=12 den 7=a DEN 7.12=84
January 19, 2011

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