Chemistry, 18.03.2021 03:40 BreBreDoeCCx
20 g of Sulfuric acid is added to 80g of NaOH. They react producing water , sodium sulfate and lot of heat. The mass of the products is only 95g. What could be the reason for the lower mass of the products?
Answers: 3
Chemistry, 21.06.2019 18:20
Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0
Answers: 2
Chemistry, 22.06.2019 11:20
Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.
Answers: 1
Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
Chemistry, 22.06.2019 23:00
In which region is the substance in both the solid phase and the liquid phase? 1 2. 3 4 mark this and return save and exit next
Answers: 2
20 g of Sulfuric acid is added to 80g of NaOH. They react producing water , sodium sulfate and lot...
Mathematics, 29.11.2020 05:20
Mathematics, 29.11.2020 05:20
English, 29.11.2020 05:20
Mathematics, 29.11.2020 05:20
Mathematics, 29.11.2020 05:20
Social Studies, 29.11.2020 05:20
Biology, 29.11.2020 05:20
English, 29.11.2020 05:20
Mathematics, 29.11.2020 05:20