Which of these is a chemical property?
- AFlammability
- BColour
- CBoiling point
- DDensity
Which of these is a chemical property?
元素記号Kをもつ元素はどれか。
How many moles of oxygen atoms are in 1 mole of carbon dioxide, CO₂?
Which element has chemical properties most similar to calcium?
A bag of 5% (w/v) glucose solution (called 5% dextrose in the US) contains 5 g of glucose per 100 mL. How many grams of glucose are in 1 L?
What colour is phenolphthalein indicator in a basic solution?
Using PV = nRT with R = 0.082 L·atm/(mol·K), how many moles of gas are in 24.6 L at 1 atm and 300 K?
Why does drinking seawater make dehydration worse?
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