B
Solar energy does not give off toxic wastes as nuclear energy does (ex. Chernobyl)
Answer:you killed a person
Explanation:that is a example
Answer:
Urea contains more nitrogen
Explanation:
1 mole of Urea contains 2 moles of Nitrogen and 1 mole of ammonium sulfate contains, also, 2 moles of nitrogen.
60g of urea (Molar mass: 60g/mol) contains:
60g × (1mol / 60g) = 1 mole. As 1 mole of urea contains 2 moles of nitrogen, moles of nitrogen are 2.
100g of ammonium sulfate (Molar mass: 132g/mol) contains:
100g × (1mol / 132g) = 0.758 moles.
As 1 mole of urea contains 2 moles of nitrogen, moles of nitrogen are 0.758×2 = 1.516 moles.
That means, <em>urea contains more nitrogen</em>.
Answer:
1. dividing the mass of water lost by the mass of hydrate used is equal to the fraction of water in the compound. Multiplying this fraction by 100 gives the percent water in the hydrate.
2. hydrate or compounds that incorporate water molecules into the fundamental solid structure in a hydrate which usually has a Pacific crystalline form a Define number of water molecules are associated with each formula unit on the primary material Gypsum is a hydrate with two water molecules present for each formula unit of caso4 the chemical formula for Gypsum is caso4 . H2O
