A silver bar with a mass of 250 grams is heated from 25 C to 69 C. How much heat does the bar absorb? The specific heat (C beta ) for silver is 0.335 J/g

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.

How many grams of phosphorus are contained in 5.09 moles of phosphorus?

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse