Correct answer is C
Na2O + H2O ----> 2 NaOH
:-) ;-)
Answer
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
WHAT IS THE DEFINITION FOR ISOTOPES
<u><em>the same atomic number (number of protons), but different mass number of neutrons and protons.</em></u>
WHAT ARE EXAMPLES OF ISOTOPES
<em><u>carbon</u></em>
<em><u>nitrogen</u></em>
<em><u>hydrogen</u></em>
WHAT ARE NON EXAMPLES OF ISOTOPES
<u><em>tiger-striped cat</em></u>
<u><em>idk other ones sorry...</em></u>
Answer:
0.625 mol
27.5 g
Explanation:
Given data
- Molar mass (M): 44.01 g/mol
- Temperature (T): 19.0°C + 273.15 = 292.2 K
We can find the moles of dinitrogen monoxide gas using the ideal gas equation.
P × V = n × R × T
n = P × V/R × T
n = 0.500 atm × 30.0 L/0.0821 atm.L/mol.K × 292.2 K
n = 0.625 mol
Then, we can find the mass corresponding to 0.625 moles.
0.625 mol × 44.01 g/mol = 27.5 g
Mendeleev arranged the elements in rows in order of increasing mass so that elements with similar properties were in the same column.
So, the answer will be When Mendeleev organized elements in his periodic table in order of increasing mass, elements with similar properties were in the same Column.
