Calculate the moles in CaCl2 in a 25.00 g sample
25 grams of steam are in 25 grams of water.
For this you need the atomic (molecular) mass of NaHCO3. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel. NaHCO3=84.0 grams110 grams NaHCO3 / (84.0 grams) = 1.31 moles NaHCO3
694 mL of glucose solution 0,2 M are needed.
The answer is 25 dekameter
Wendy has traveled 6/10 of the 50 states.How many is this
Sr is 87.6g/mol, and 25/87.6 = 0.285 moles.
To convert from moles to kilograms, you need to use the molar mass of the substance. The molar mass of the substance in question would determine how many kilograms are in 25 moles. You can calculate it by multiplying the number of moles by the molar mass.
If I take a radioactive sample of 400 moles of an unknown substance and let it decay to the point of three half-lives I would have 50 moles left of the sample. 1/2 of what is left will decay in the next half-life. At the end of that half-life I will have 25 moles left of the unknown substance or 4/25.
The answer is 64,9 moles.
25 moles of sulfur dioxide contain 600 grams of oxygen. Each mole of SO2 contains 2 moles of oxygen, and the molar mass of O is 16 g/mol. So, 25 moles x 2 moles = 50 moles of O, which is 50 moles x 16 g/mol = 800 g of O.
800 g oxygen are needed.
To calculate the number of moles in 25 grams of NaCl, divide the given mass by the molar mass of NaCl. The molar mass of NaCl is approximately 58.44 g/mol. Therefore, 25 grams of NaCl is equivalent to approximately 0.43 moles.
A silver sample with the same mass as the Earth (5.972 × 10^24 kg) would contain about 1.96 × 10^50 atoms of silver. This amount of silver corresponds to approximately 3.25 × 10^25 moles.
From the balanced chemical equation 3Fe2O3 + CO → 2Fe3O4 + CO2, it can be seen that 3 moles of Fe2O3 react with 1 mole of CO to produce 2 moles of Fe. Therefore, if 25 moles of CO react, it will produce 25/3 * 2 = 16.67 moles of Fe.
To find the number of moles, divide the number of molecules by Avogadro's number (6.022 x 10^23 molecules/mol). In this case, 2.0 x 10^25 molecules of silver nitrate is equal to 33.2 moles (2.0 x 10^25 / 6.022 x 10^23).
To determine how many moles of oxygen are needed to completely react with isooctane (C₈H₁₈), we can use the balanced combustion reaction: 2 C₈H₁₈ + 25 O₂ → 16 CO₂ + 18 H₂O. From this equation, 2 moles of isooctane react with 25 moles of oxygen, indicating that 1 mole of isooctane requires 12.5 moles of oxygen. Therefore, for 4 moles of isooctane, 4 × 12.5 = 50 moles of oxygen are needed.
yes because there's should be at least 25 moles and at that my mom have at least 25