What mass of potassium bromate crystallizes on cooling 356 g of a saturated solution at 80°C to 20°C?
100 g of water dissolve 34.0 g at 80 °C and 7 g of salt at 20°C​

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.