Which of these is a mixture of a solid that is soluble in water and a solid that is insoluble in water?
a) iron and steel
b) salt and sugar
c) iron and gravel
d) gravel and sugar

What must be in balance for temperatures to remain constant?

Detrimental the length of the object shown 1. 97.8mm 2. 97.80 mm 3. 97mm 4. 98mm

How many grams of oxygen gas will react completely with a block of calcium metal that is 3.0 cm by 3.5 cm by 4.2 cm, if the density of calcium is 1.55 g/ml? show all steps of your calculation as well as the final answer.