Find the half life of a substance that decays from 32g to 11.5 g in 64 days

If the pKa value for a given acid is low, what does that say about the acid (is it weak or strong) ?

Calculate the ph of a solution that is 0.065 m in potassium propionate (c2h5cook or kc3h5o2) and 0.090 m in propionic acid (c2h5cooh or hc3h5o2).

What is the best safety practice recommended before leaving the chemistry laboratory?

Where do producers get matter and energy to live and grow? A) the soil B) all of these answers are correct C) the sun D) the atmosphere

Which age of river is usually slow and meandering? A. mature B. youth C. middle age D. new

A student used a DCP solution (standardized to 9.98x10-4M) to analyze a sample of extract from 2.50g of solid food. The titration required 22.49mL of DCP. 87.00% of all the ascorbic acid in the food was collected in the extract.

Barium-131 is a radioactive isotope of the element barium used for gastrointestinal tract scans in doctors offices. Barium-131 has a half-life of 10 days.

The name for Na2 O in chemistry

What is the simplest alkane

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