Answer:
Charging Level The cycle life of Lithium batteries can be increased by reducing the charging cut off voltage.
Explanation:
The answer is glyceride, hope I helped
(a) at the bottom - high density organic compound dissolved in methylene chloride
(b) at the bottom - saturated aqueous sodium chloride
Explanation:
Sodium chloride is dissolved in water while the organic compounds are dissolved in methylene chloride. After mixing the two solutions two layers will form because water (polar molecule) will not mix with the methylene chloride (nonpolar molecule).
The layer with higher density will be at the bottom.
(a) saturated aqueous sodium chloride (d = 1.2 g/mL) - upper layer
high density organic compound dissolved in methylene chloride (d = 1.4 g/mL) - bottom layer
(b) saturated aqueous sodium chloride (d = 1.2 g/mL) - bottom layer
low density organic compound dissolved in methylene chloride (d = 1.1 g/mL) - upper layer
Learn more about:
liquids with different densities
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1) Chemical equation:
Mg + I2 ---> Mg I2
2) molar ratios
1 mol Mg : 1 mol I2 : 1 mol Mg I2
3) Calculate the number of moles of Mg in 48 grams
Atomic mass of Mg: 24.3 g/mol
number of moles = mass in grams / atomic mass = 48 g / 24.3 g/mol = 1.975 mol Mg
4) Use a proportion with the molar ratios
1 mol I2 / 1 mol Mg = x / 1.975 mol Mg =>
=> x = 1 mol I2 * 1.975 mol Mg / 1 mol Mg = 1.975 mol I2
5) Convert 1.975 mol I2 to grams
molar mass of I2 = 2 * 126.9 g/mol = 253.8 g/mol
mass = number of moles * molar mass = 1.975 mol * 253.8 g/mol = 501.255 g
Answer: 501 grams
