20 points!

every year eli and his family visit great sand dunes desert in colorado. elliott notices that more dunes with varied shapes and sizes appear each year. explain what causes this phenomenon.

In 2002, the rare earth elements mine in mountain pass, california was closed because

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.