3 years ago

Earths rotation takes about ____, whereas its revolution takes about _.

1 answer:

8 0

A.) a rotation is the earth "rotating" on its axis while a revolution is the earth "revolving" around the sun so 1 rotation is from sun rise to sun rise while one revolution is from January 1st to the next January 1st

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CHEMISTRY PLEASE HELP!!!???

Montano1993 [528]

1. Solids

- definite volume & shape

- little energy

-vibrate in place

- very incompressible

2. Liquids

- held together yet can still flow

5 0

2 years ago

How many nanoseconds are there in one minute?

umka21 [38]

1 minute equals 6e+10 nanoseconds.
I hope this helped! :>

3 0

3 years ago

Bromine has two isotopes 79Br and 81Br, whose masses (78.9183 and 80.9163 amu) and abundances (50.69% and 49.31%, respectively)

Reika [66]

Answer:

Average atomic mass = 79.9034 amu

Explanation:

The formula for the calculation of the average atomic mass is:

$Average\ atomic\ mass=(\frac {\%\ of\ the\ first\ isotope}{100}\times {Mass\ of\ the\ first\ isotope})+(\frac {\%\ of\ the\ second\ isotope}{100}\times {Mass\ of\ the\ second\ isotope})$