<span>Heterogeneous:
</span>- A salad with tomatoes and almonds
- Salt and Pepper mixed in a bowl (dry)
- A fruit bowl
- Oil and Water
- Solid Tea Herbs and Water
Homogeneous:
- Salt water
- A well blended fruit smoothie
- Lemon water
- Gatorade
- Sprite
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Find the hydroxide ion concentration of a solution with a pOH of 5.90. To solve this, use a scientific calculator and enter 5.90 and use the +/- button to make it negative and then press the 10x key.
Answer:
1360.0 g/mol
Explanation:
If there is one atom of cobalt in every molecule of cyanocobalamin its chemical formula must be
CoX₂, so there is 1 mol of cobalt for 1 mol of the compound. The molar mass of the cobalt is 59 g/mol. So, there is 59 g of cobalt in 1 mol of the cyanocobalamin and it represents 4.34% of the total mass, so:
0.0434m = 59
m = 1359.45 g of cyanocobalamin
The molar mass of the molecule is the mass divided by the number of moles (which is 1), so it is:
M = 1359.45 g/mol = 1360.0 g/mol
