Which step of the scientific method involves obtaining information through the senses?

A. analyzing data

B. drawing conclusions

C. making observations

D. revising a hypothesis

What is the equivalent mass of HBr in a complete neutralization reaction?

Otters are one of the few animals that can use tools. When otters need to open the hard shells of the animals they eat, they have been known to use a rock. Some, but not all, otters have been seen using this behavior. This behavior is most likely.

The addition of 3.72 g of Ba (OH) 2 · 8 H2O to a solution of 1.26 g of NH4SCN in 133 g of water in a calorimeter caused the temperature to fall by 4.3°C. Assuming the specific heat of the solution and products is 4.

Biomes are defined by specific characteristics. What characteristics would define the biome shown? a. cool and windy with coarse gravelly soil b. low-growing shrubs and large furry carnivores c. cool and windy with small nocturnal carnivores d.

A gas sample has a temperature of 22c with an unknown volume. The same gas has a volume of 456 mL when the temperature is 86c with no change in the pressure or amount of gas. What was the initial volume in millimeters oh the gas

What factors can make atoms unstable

Nitrogen (N), oxygen (O), chlorine (Cl), neon (Ne), and argon (Ar) are all elements that occur as a gas at room temperature (20°C). Using the periodic table, which pair of gases has the most similar properties?

what will be the new volume of a 250mL sample of gas at 300 k and 1 atm if heated to 350 k at 1 atm law use:

Which statement describes the chemical property of oxygen

The reaction CH3NC? CH3CN is called an isomerization reaction andinvolves the breaking of a C-N bond and subsequent formation of a C-C bond-the reactant andproduct have the same molecular formulas and so are isomers.