4) When solid sodium nitrate is heated, solid sodium nitrite and oxygen gas (02) are produced. Write the balanced chemical equation for this chemical
reaction using the correct chemical formulas and include conditions (s, l, g, or
aq). Put your answer in the box below.

Write the balanced chemical equation and state what type of chemical reaction this is.

Omg imgonnafailnfiedkla use complete sentences to explain how the mass of hydrogen is conserved during cellular respiration.

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.