Cat asked:

So 1 mole=6.02 x 10^23 particles
1 teaspoon o baking soda = 5 grams
correction: it’s 7.167 x 10^22 not the 23rd.
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larry G asked:

An unknown volume of water at 18.2 degrees Celsius is added to 24.4 mL of water at 35.0 degrees celsius. If the final temperature is 23.5 degrees celsius what was the unknown volume. Assume no heat is lost to the surroundings; d of water = 1.00 g/ml

much appreciated.
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