Sendok yang biasa kita gunakan terbuat dari stainless atau campuran baja dengan beberapa logam, namun sendok tidak mudah berkarat padahal yang kita ketahui bahwa logam jika kontak langsung dengan air dan oksigen akan mudah berkarat. Alasan yang benar untuk pernyataan tersebut adalah

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?

Name the element in group 17, period 2. (periodic table)