Chemistry, 22.12.2019 12:31 miraclewhipppp
The height of a sound wave is called its
a: amplitude
b: altitude
c: attitude
d: atmosphere
also answer these 3
what is light?
a: a wave of vibrating electric and magnetic energy
b: a wave that travels by compressions
c: a wave that travels by rare fractions
d: a state of matter
the height of a sound wave is called its
a: amplitude
b: altitude
c: attitude
d: atmosphere
the sun appears to move across the sky each day. what time of day will the shadow be shortest?
a: sunrise
b: noon
c: sunset
d: midnight
Answers: 1
Chemistry, 22.06.2019 08:30
In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?
Answers: 2
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 15:30
The identities of substances are the same before and after which type of change
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Chemistry, 22.06.2019 19:30
How might this scientific phenomena be explained? a paper clip floats on water.
Answers: 1
The height of a sound wave is called its
a: amplitude
b: altitude
c: attitude<...
a: amplitude
b: altitude
c: attitude<...
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