What is the change from a gas directly to a solid, skipping the liquid state, called?
- AFreezing
- BDeposition
- CSublimation
- DCondensation
What is the change from a gas directly to a solid, skipping the liquid state, called?
水がしばしば「万能の溶媒」と呼ばれるのはなぜか。
Which element makes up the largest share of the human body by mass?
Which element has chemical properties most similar to calcium?
A piece of metal has a density of 8 g/cm³ and a volume of 5 cm³. What is its mass?
A solution has a pH of 10. What is its pOH at 25 °C?
What fraction of a radioactive isotope remains after three half-lives?
2090 J of heat is added to 50 g of water (specific heat 4.18 J/g·°C). By how much does its temperature rise?
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