Cal the molarity of solution prepared by dissolving 250 of Ca (NO3) 2 to make 2.5L of solution

What defines an exothermic reaction? O A. A reaction that needs heat added O B. A reaction that possesses enthalpy O c. A reaction that relies on collisions O D. A reaction that produces heat

Check the statement (s) below to ensure that distance readings are accurate.

The element 238 and 92 has how many neutrons? 330 238 184 146 92

2. What happens during a chemical reaction?

How many orbitals are in the n=3 shell?

In which changes of state do atoms lose energy?

Can you live without body tissue? This is a yes or no question, no explaining required, but you can add it if you want. : D

According to the graph, which activity has used the largest amount of water over the past twenty years?

Tiffany leaves balloons filled with helium gas inside her car in on a sunny day when she returns to her car some some of the balloons are much larger and a few have popped explain what happened

If the pH indicator bromothymol blue was added to the nitric acid solution, it's colour would be?