What type of radioactive decay involves two protons and two neutrons?

alpha emission

beta emission

positron emission

gamma rays

What volume of so2 is produced at 325 k and 1.35 atm when 15.0 grams of hcl reacts with excess k2so3?

A chemical reaction was run in 210.0 mL of H2O. During the reaction, the temperature of the H2O changes from 27.2 oC to 57.6 oC. How much heat (in kJ) did the chemical reaction produce? For H2O, Cp = 4.184 J / (g · oC).

If 35.8 g Mg react with 82.3 g HCl according to the reaction below, how many grams of hydrogen gas will produced, and how many grams of the excess reactant will be left over? Unbalanced equation: Mg + HCI - > MgCl2 + H2

Convert 8.30 grams of silver into moles

1. How does the period (row) in which an element is located relate to the number of shells that contain electrons? 2. How does the group (column) in which an element is located relate to the number of valence electrons in its outer shell? 3.

5.0 g of NaCl is dissolved in water, and the solution is brought to a final volume of 150 mL. What is the molarity of this solution?

During which two processes does a substance release energy? 1. | freezing and condensation freezing and melting evaporation and condensation evaporation and melting Submi

Lake michigan holds 1.35 x 10^15 gallons of water

N which orbitals would the valence electrons for selenium (Se) be placed? s orbital and f orbital s orbital only s orbital and p orbital d orbital only

Anne prepares a solution of copper nitrate with a concentration of 30 g/dm³. What mass of copper nitrate did she add to 100cm³ of water, in grams?