What is the final step of the scientific method?

communicating results

collecting data

proving the hypothesis

writing a conclusion

Which elements have properties similar to calcium?

What type of radiation is likely to occur when the ratio of protons to neutrons is below the band of stability? a. alpha decay b. beta decay c. neutron emission d. positron emission

28.5g of iron shot is added to a graduate cylinder containing 45.50 mL of water. The water level rises to the 49.10 mL, From this information calculate the density of the iron?

A first order reaction has a rate constant of 0.816 at 25 oC. Given that the activation energy is 22.7 kJ/mol, calculate the rate constant at 34 oC. (enter answer to 3 decimal places)

In a DNA molecule, if 38% of the molecular bases are C (cytosine), what percent of the bases are T (thymine) ?

What is the full form of PVC

What happens when the land in the sea warm-up at different rates during the day

Increasing which variable would decrease the pressure of a contained gas?

How many moles of h2o are produced when using 7 moles of h2

A 25 mL sample of 0.100 M HNO3 completely reacts with NaOH according to this equation: HNO3 (aq) + NaOH (aq) → NaNO3 (aq) + H2O (1) How many moles of HNO3 are in the sample?