The balanced chemical reaction is:
<span>2 Al (s) + 3 Fe(NO3)2 (aq) = 3 Fe (s) + 2 Al(NO3)2 (aq)
</span>
The ratios or the coefficients between the reactants and the products will be used for further calculations.
305 g Fe(NO3)2 solution (.755) = 230.275 g <span>Fe(NO3)2
</span> 230.275 g Fe(NO3)2 ( 1mol / 179.87 g) ( 3 mol Fe / 3 mol <span>Fe(NO3)2) ( 55.85 g / mol) = 71.500 g Fe</span>
Answer:
cooking pot - conducts heat
bin - insulates from heat
plate - brittle
The balanced chemical reaction is:
<span>K2CrO4(aq) + PbCl2(aq) → 2KCl(aq) + PbCrO4(s)
We are given the amount of the reactants to be used for the reaction. These amounts will be the starting point of our calculations. </span>
<span>
3.0 M K2CrO4 (.500 L) = 1.5 mol K2CrO4
</span>1.5 mol K2CrO4 (1 mol PbCrO4 / 1 <span>mol K2CrO4</span>) ( 323.2 g/mol)=484.8 grams PbCrO4
Therefore, the best answer from the choices is 480 grams.
Answer:
pH = 4.09
Explanation:
molarity of oxalic acid in the solution
= 0.1 x 25 / (25 + 35)
= 0.0417 M
molarity of NaOH in the solution
= 0.1 x 35 / (25 +35)
= 0.0583 M
H2C2O4 + NaOH -------------------> NaHC2O4 + H2O
0.0417 0.0583 0 0
0 0.0166 0.0417
now second acid -base titration
NaHC2O4 + NaOH -------------------> Na2C2O4 + H2O
0.0417 0.0166 0 0
0.0251 0 0.0166 ---
now
pH = pKa2 + log [Na2C2O4 / NaHC2O4]
pH = 4.27 + log (0.0166 / 0.0251)
pH = 4.09
One is b, through the logic that group one can only lose or gain one electron and group 18 which is the noble gases and 132 doesn't make sense.
number two is ionic because they are metals who usually form bonds with non metals, covalent bonds are nonmetals and nonmetal bonding.
for three if the charge is a positive then yes because the atom then becomes neutral. True.
B
B
A
