Answer:
when solid dry ice vaporizes (physical change), carbon dioxide molecules absorb energy. When liquid water becomes ice, energy is released. Remember that all chemical reactions involve a change in the bonds of the reactants.
Explanation:
Answer:
Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together. After the salt compounds are pulled apart, the sodium and chloride atoms are surrounded by water molecules, as this diagram shows. Once this happens, the salt is dissolved, resulting in a homogeneous solution.
Explanation:
Answer:
ch3c(ch3)(oh)ch3
Explanation:
that should be the answer
Answer:
The answer to your question is: # of atoms = 2.42 x 10¹⁰
Explanation:
Data
radius = 248 pm
row = 6 cm long
Conversion
1 pm ------------------- 1 x 10 ⁻¹⁰ cm
248 pm -------------------- x
x = (248 x 1 x 10⁻¹⁰) / 1
x = 2.48 x 10⁻¹⁰ cm
Divide
# of atoms = 6 / 2.48 x 10⁻¹⁰
# of atoms = 2.42 x 10¹⁰
Answer:
1 mol of H2SO4 contains 6.022 x 10^23 molecules. : 0.5 mol of H2SO4 contains 0.5 x 6.022 x 10^23 molecules. = 3.011 x 10^23 molecules . that is 49 g of H2SO4 contains 3.011 x 10^23 molecules of H2SO
Explanation:
