Which of the radioactive decay particles have the lowest penetrating power?

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Which of the radioactive decay particles have the lowest penetrating power?
Mixture A is formed using KCl and H2O and mixture B is formed using MgCl2 and H2O. If the two mixtures have the same molality, which of the following statements would be true about the boiling point of the mixtures?
Which of the following will not dissolve in water?
If an unknown compound is found to have an empirical formula of CH4, which of the following is the molecular formula if the molar mass was determined to be 128 g/mol?
What is the final oxidation number of carbon in the following chemical reaction?
6CO2 + 6H2O -> C6H12O6 + 6O2
Which of the following compounds would have the highest boiling point?
According to the ideal gas law at STP, which of the following is the value of the ratio between moles (assume 1 mole), the gas constant R, temperature and the pressure?
Balance the following equation:
Butane + O2 -> H2O + CO2
Placing an inflated balloon in the freezer would result in which of the following?
If the temperature of a gas is quadrupled from 40K to 160K, which of the following accurately describes the change in the average kinetic energy of the gas?