An ion from a given element has 20 protons and 18 electrons. What is the charge on the ion? |
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What is the name of the element?
What is the symbol for the ion?

Which best describes why nh4+ can form an ionic bond with ci-?

How many neutrons does a atom of cobalt have?

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign