1.简单
Which state of matter has neither a fixed shape nor a fixed volume?
- AGas
- BLiquid
- CSolid
- DCrystal
Which state of matter has neither a fixed shape nor a fixed volume?
一种溶液的 pH 为 3。应如何描述它?
According to the kinetic molecular theory, how do gas particles move?
At STP (0 °C and 1 atm), what volume does 1 mole of an ideal gas occupy?
How many moles of gas are in 44.8 L at STP (0 °C and 1 atm)?
What is the formula of the hydroxide ion?
A solution contains 250 mg of a substance in every 5 mL. How many grams of the substance are in 100 mL?
5.85 g of NaCl (molar mass 58.5 g/mol) is dissolved to make 500 mL of solution. What is the molarity?
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