Answer:
0.00147 Molar is the molarity of the solution.
Explanation:
Molarity of the solution is the moles of compound in 1 Liter solutions.
Mass of calcium sulfate = 0.03 g
Molar mass of calcium sulfate = 136 g/mol
Volume of the calcium sulfate = 150. mL = 0.150 L ( 1 L = 0.001 mL)
0.00147 Molar is the molarity of the solution.
Answer:
Answer: (b) F
Explanation:
Sodium has 1, magnesium has 2 and Aluminium has 3 electrons in its outermost shell whereas Fluorine has 7 electrons in its outermost shell hence Fluorine does not lose electrons easily.
The electronic configuration of fluorine is 2,7.
Fluorine is the ninth element with a total of 9 electrons.
The first two electrons will go in the 1s orbital.
The next 2 electrons for F go in the 2s orbital.
The remaining five electrons will go in the 2p orbital. Therefore the F electron configuration will be 1s22s22p5.
Answer:
4 mL
Explanation:
Data Given:
Density (d) = 4.8 g/mL
Mass of the substance (m) = 19.2 g
Volume of the sample (V) = ?
Solution:
Formula will be used
d = m/V
As we have to find volume so rearrange the above equation
V = m/d . . . . . . . . . . . (1)
Put values in above equation 1
V = 19.2 g / 4.8 g/mL
V = 4 mL
So,
volume of sample = 4 mL
The compound that is formed is calcium hydroxide.
<h3>Preparation of calcium hydroxide</h3>
When limestone is decomposed at a high temperature, calcium oxide is formed as the residue.
When the calcium oxide residue is treated with water, a calcium hydroxide solution is formed.
More on calcium hydroxide can be found here: brainly.com/question/9584549
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Relative atomic mass =
(42*112)+(58*96) all divided by 100
Hope this helps :)
