Chemistry, 16.09.2021 21:10, Tyrant4life
HELP!! : 2 H2 + O2 --> 2 H2O. Why isn't there any coefficient in front of oxygen?
A. A one is assumed when no coefficient is present.
B. There is an unlimited amount of oxygen
C. The 2 after the oxygen is all that is needed
D. All of these
Answers: 3
Chemistry, 21.06.2019 20:40, ellemarshall13
Which of the following pressures is equal to 760 mm hg? 2.0 atm 101.3 pa 101,300 kpa 101,300 pa
Answers: 2
Chemistry, 22.06.2019 03:50, Pizzapegasus1
Express the following number in scientific notation. 0.026890 =
Answers: 1
Chemistry, 22.06.2019 05:00, hjamya17
In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?
Answers: 1
Chemistry, 22.06.2019 11:40, Wemaybewrong
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
HELP!! : 2 H2 + O2 --> 2 H2O. Why isn't there any coefficient in front of oxygen?
A. A one is a...
Biology, 16.10.2019 19:00
Mathematics, 16.10.2019 19:00
Computers and Technology, 16.10.2019 19:00
Advanced Placement (AP), 16.10.2019 19:00