When we finish, the temperature would be 32.5℃
Density of water = mass/volume
Mass of water = Density × Volume
= Final T - Initial T
Q is the heat energy in calories
c is the specific heat capacity (for water 1.0 cal/(g℃))
m is the mass of water
plugging in the values
Final T = ∆T + Initial T
= 7.5℃ + 25℃ = 32.5℃ (Answer).
4 FeCl3 + 3O2 --> 2Fe2O3 + 6Cl2 balance this please
FeCl3 + O2 = Fe2O3 + Cl2
Convert 1.00atm of pressure to its equivalent in millimeters of mercury.
How many grams of AgCl will be produced from 5.00 g of NaCl and 103 g of AgNO3?
Whenever a similar problem is involved, we need to write the chemical reaction representing the net change, as well as due to the fact that we need to know the stoichiometry involved.
Sodium chloride reacts with silver nitrate in a double displacement reaction to produce a cation exchange, that is, we produce silver chloride and sodium nitrate given by the following balanced chemical equation:
According to the balanced chemical equation, the molar stoichiometry of silver nitrate to sodium chloride is 1 : 1.
Let's find moles of each substance to determine the limiting reactant. To do this, divide mass of each component by its molar mass:
Since the stoichiometry of this reaction is 1 : 1, we can compare the moles directly. Notice that the number of moles of NaCl is lower than the number of moles of silver nitrate. This means NaCl is the limiting reactant.
According to the balanced chemical equation, 1 mole of NaCl produces 1 mole of AgCl, so the amount of AgCl would be:
In order to convert this into mass, let's multiply by the molar mass of AgCl:
Scientists use this technology to map the human genome.
Human genome mapping is the scientific research that helps in determining the set of nucleic acid sequence of humans which make up human DNA. This exercise have many advantages such as: