Thus we can balance the oxygen atoms by putting a prefix of 25/2 on the left side. To obtain a equation containing whole numbers, we multiply the entire equation by 2. This gives the final equation. 2 C8H18 + 25 O2 ---> 16 CO2 +18 H2O.
Answer: Earth's climate has fluctuated through deep time, pushed by these 10 ... How Earth's Climate Changes Naturally (and Why Things Are Different Now) ... So if the climate changed before humans, how can we be sure we're ... can be disruptive, but in the grand scale of Earth's history it's tiny and temporary
Explanation:
Answer:
Explanation:
Water is called the universal solvent. It is a polar molecule (105 degree angle between the H atoms) that gives it a + and a - side so to speak....which allows it to 'pull apart' substances....overcome their intra-molecular attractions to each other ...i.e. disssovle them
Answer:
0.18 mol
Explanation:
Given data
- Mass of carbon tetrachloride (solvent): 750 g
- Molality of the solution: 0.24 m
- Moles of iodine (solute): ?
Step 1: Convert the mass of the solvent to kilograms
We will use the relationship 1 kg = 1,000 g.
![750g \times \frac{1kg}{1,000g} =0.750kg](https://tex.z-dn.net/?f=750g%20%5Ctimes%20%5Cfrac%7B1kg%7D%7B1%2C000g%7D%20%3D0.750kg)
Step 2: Calculate the moles of the solute
The molality is equal to the moles of solute divided by the kilograms of solvent. Then,
![m = \frac{moles\ of\ solute }{kilograms\ of\ solvent} \\moles\ of\ solute = m \times kilograms\ of\ solvent = \frac{0.24mol}{kg} \times 0.750kg = 0.18 mol](https://tex.z-dn.net/?f=m%20%3D%20%5Cfrac%7Bmoles%5C%20of%5C%20solute%20%7D%7Bkilograms%5C%20of%5C%20solvent%7D%20%5C%5Cmoles%5C%20of%5C%20solute%20%3D%20m%20%5Ctimes%20kilograms%5C%20of%5C%20solvent%20%3D%20%5Cfrac%7B0.24mol%7D%7Bkg%7D%20%20%5Ctimes%200.750kg%20%3D%200.18%20mol)