Which best describes the act of using senses or tools to gather information? creating a hypothesis making an observation summarizing the results recording the measurements

Each molecule of nitric acid has the formula hno3. if there are 6000 oxygen atoms present and 6000 nitrogen atoms present, how many hydrogen atoms will be required to convert all of the oxygen atoms into nitric acid? select one:

A chemical reaction gives off 1,500 kJ of heat energy. About how many calories is this? (1 calorie = 4.18 Joules)

Which bond or interaction would be most difficult to disrupt when compounds are placed into water?

What happens to water when it changes to ice? Its density increases. Its density decreases. Its mass increases. Its mass decreases. Its volume increases. Its volume decreases.

Which participates in chemical reactions? electrons protons neutrons gamma rays

Consider the following half-reactions: Half-reaction E° (V) I2 (s) + 2e - 2I - (aq) 0.535V 2H + (aq) + 2e - H2 (g) 0.000V Zn2 + (aq) + 2e - Zn (s) - 0.

Where did the longest tsunami form?

Calculate the number of H atoms in 0.190 mole C 6 H 14 O .

What fuel is produced by the electrolysis of water? chlorine gas hydrogen gas natural gas oxygen gas

Model describe how you would show j. j. thomson's model of the atom using small beads and clay