Both were created by a Greek astronomer. Both are ways to display the Universe. The models both contain 3 main objects: Earth, Sun, and other planets. Planets orbit in some way.
Answer:
288g
Explanation:
Given parameters:
Number of moles of H₂O = 16moles
Unknown:
Mass of the water = ?
Solution:
To solve this problem, first find the molar mass of H₂O;
Molar mass of H₂O = 2(1) + 16 = 18g/mol
Mass of H₂O = number of moles x molar mass
= 16 x 18
= 288g
Answer:
3.064 $
Solution:
First of all we will find the number of pounds contained by one Kg. Therefore, it is found that,
1 Kilogram = 2.20462 Pounds
Hence, as given,
1 Pound of Margarine costs = 1.39 Dollars
So,
2.20462 Pounds Margarine will cost = X Dollars
Solving for X,
X = (2.20462 Pounds × 1.39 Dollars) ÷ 1 Pound
X = 3.064 Dollars
Answer:
The molar mass and molecular weight of 3CaCl2 is 332.952.
Answer:
0.66g of water
Explanation:
Molar heat of vaporization of any substance is defined as the heat necessary to vaporize 1 mole of the substance.
If heat of vaporization of water is 40.79kJ/mol and you add 1.50kJ, the moles you vaporize are:
1.50kJ × (1mol / 40.79kJ) = 0.0368 moles of water.
As molar mass of water is 18.01g/mol, mass of water that can be vaporized are:
0.0368 moles × (18.01g / mol) = <em>0.66g of water</em>