<span>after the 1940, the infention of : PASTEURIZATION permitted wines to be produced in places where climate was not ideal for wine production
after pasteurization process, all the microbes that exist within the wine are eliminated, which will prevent it from rottening. This make it possible to store wine for a long period of time even thought it's not in the harvesting climate</span>
Answer:
Explanation:
We want to convert from moles of water to grams of water.
First, find the molar mass of water (H₂O) Look on the Periodic Table for the masses of hydrogen and oxygen.
- Hydrogen (H): 1.008 g/mol
- Oxygen (O): 15.999 g/mol
Next, add up the number of each element in water. The subscript of 2 comes after the H, so there are 2 moles of hydrogen.
- 2 Hydrogen: (1.008 g/mol*2) = 2.016 g/mol
Finally, add the molar mass of 2 hydrogen and 1 oxygen.
- 2.016 g/mol (2 Hydrogen) + 15.999 g/mol (1 oxygen)= 18.015 g/mol
Next, find the grams in 6.5 moles.
Use the molar mass we just found as a ratio.
We want to find the grams in 6.5 moles. We can multiply the ratio above by 6.5
Multiply. Note that the moles of H₂O will cancel each other out.
If we want to round to the technically correct significant figures, it would be 2 sig figs. The original measurement, 6.5, has 2 (6 and 5).
Answer:
d. The particles of matter are arranged
in different ways for the different
states.
Explanation:
when you hear kinetic think hot or cold
example
water when its hot its a gas and looks different under a microscope
water when its cold its ice and looks different under a microscope
Solution :
<u>Spontaneous Process</u>
A spontaneous process is defined as the process that occurs without the help of any external aid or inputs. A spontaneous process is a natural process which occurs naturally in the environment.
<u>Non Spontaneous process</u>
A non spontaneous process is a process which does not occur naturally. Some inputs are provided for the process to occur. Energy from external source is applied into the process to start the process.
The following processes are :
1. Melling of ice ---- Spontaneous
2 Rusting of iron --- Spontaneous
3. Marble going down the spiral. --- spontaneous
4. Going up the hill ---- Non spontaneous
5. Keeping the food fresh from spoilage --- Non spontaneous
Answer:
138.39 g/mol
Explanation:
Formula mass is a synonym for molar mass, which is the sum of all the masses of the elements. These can be found on a periodic table.
Because this is hydrated, the formula needs to include H2O.
MgSO4 + H2O
Mg + S + 4O + 2H + O
24.31 + 32.07 + (4*16) + (2*1.008) + 16 = about <u>138.39</u>