What is the mass percent of water in NiSO₄･4 H₂O? Provide an answer to two decimal places

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

What is i fracture in the crust called when land move up, down or sideways