This is how many extra electrons are in the Lewis structure of the sulfate ion, SO42–.
What is 2?
This is what alpha particles are:
What is Helium nuclei?
In the equation 2Al(s) + 3Fe(NO3)2(aq)--> 3Fe(s) + 2Al(NO3)3(aq), aluminum replaced
What is iron (Fe)?
The reaction represented by the equation 2HgO(s) --> 2Hg(l) + O2(g) is a(n)
What is decomposition reaction?
For the reaction represented by the equation C + 2H2--> CH4, this is this is the mole ratio of hydrogen to methane, CH4.
What is 2:1?
This is the density of a 14 gram cube with a volume of 27 cm3
What is 0.52 g/cm3?
D=m/v = 14g/27cm3 = 0.51851... = 0.52 g/cm3
When U-235 absorbs a neutron and splits into Ba-141, Kr-92 and 3 neutrons it is this type of reaction:
What is fission?
When Hydrogen-2 and Hydrogen-3 combine to form Helium-4 is this type of reaction:
What is fussion?
For the reaction represented by the equation 2H2 + O2 --> 2H2O, this is how many grams of water are produced from 6.00 mol of hydrogen.
What is 108g?
When the equation __NaI +__Pb(SO4)2 -->__PbI4 + __Na2SO4 is correctly balanced, this is the coefficient of NaI?
What is 4?
The density of aluminum is 2.70 g/cm3. What is the mass of a solid piece of aluminum with a volume of 1.50 cm3?
What is 4.05g?
D=m/v m=DV = 2.70 g/cm3 x 1.50 cm3 = 4.05 g
When this equation is balanced this is what goes in the blank:
22688Ra -> 222 86 Rn + _____
What is an alpha particle ( 42He)?