The grams of water needed to react with 44.9 grams of Li2O is calculated as follows
write the equation for reaction
Li2O +H2O = 2LiOH
find the moles of Li2O = mass/molar mass
= 44.9/29.9 = 1.5 moles
by use of reacting ratio between Li2O to H2O which is 1:1 the moles of H2O is therefore = 1.5 moles
mass is therefore = moles x molar mass
= 1.5 mol x 18 g/mol = 27 grams
The volume of the gas mixture is 1.7 L and its total pressure is 0.810 atm. ... If the carbon and oxygen react completely to form CO(g), what will be the final .... acid to generate hydrogen gas, which is collected over a liquid whose vapor ..... It takes more energy to add an electron to fluorine than to oxygen because the radius
Answer:
by pumping blood throughout the body.
Explanation:
From the combustion of octane, the formaldehyde will be formed as this equation:
C8H18 + O2 → CH2O + H2O this is the original equation but it is not a balanced equation, so let's start to balance it:
the equation to be balanced so the number of atoms on the right side of the equation sholud be equal with the number of atoms on the lef side.
-we have 8 C atoms on left side and 1 atom on the right side so we will try putting 8 CH2O on the right side instead of CH2O
C8H18 + O2 → 8 CH2O + H2O
we have 2 O atoms on the left side and 9 atoms on the right side so we will try first to put 9 O2 instead of O2 on the left side and put 2H2O on the right side and put 16 CH2O instead of 8 CH2O to make the atoms of O are equal on both sides = 18 atoms
C8H18 + 9 O2 → 16 CH2O + 2H2O
put now we have 8 atom C on the left side and 16 atom on the right side so, we will put 2 C8H18 instead of C8H18 now we get this equation:
2C8H18 + 9O2 →16 CH2O + 2H2O
-now we have 36 of H atoms on both sides.
- and 16 of C atoms on both sides.
- and 18 of O atoms on both sides.
now all the number of atoms of O & C & H are equal on both sides
∴ 2C8H18 + 9O2 → 16 CH2O + 2 H2O
is the final balanced equation for the formation of formaldehayde
Isotopes= a group of atoms with the same no. of protons , but different no. of neutrons
Hydrogen isotopes
The name of the second isotope is deuterium and the name of the third isotope is tritium(radioactive).The most abundant isotope is
