List 4 factors that suggest a chemical reaction has taken place

A 52.9g sample of brass, which has a specific heat capacity of 0.375·J·g-1°C-1, is put into a calorimeter (see sketch at right) that contains 100.0g of water. The temperature of the water starts off at 15.0°C.

Find the final equilibrium temperature when a 10.0 g of milk at 10.0c is added to 1.60 x 10^2 g of coffee with a temperature of 90.0 c

A hypothesis must be testable and falsifiable to be considered scientific A. True B. false

How could you find the molar mass of a compound such as water (H2O)

How does a plant take up nitrogen from surrounding soil

Which element has an isotope mass number of 32 and is used as an ecological tracer?

Which laws can be combined to form the ideal gas law? Boyle's law and Charles's law Gay-Lussac's law and Avogadro's law Charles's law, Avogadro's law, and Boyle's law Dalton's law, Gay-Lussac's law, and Avogadro's law

What determines the horizontal arrangement of the periodic table?

A 55.3 g sample of lead heated and then quenched in a 175g sample of water. During the quenching reaction the temperature of the water increases from room temperature, 25.0 °C, to 42.6 °C.

What conclusion can you draw from this experiment about the components of the black ink