Answer:D. In order to restore equilibrium, the reaction shifts right, towards products
Explanation:
Answer:
1) prokaryote : no nucleus and is unicellular
2)nucleus : contains genetic information
3) structure: the way it is made
4) eukaryotes : has a nucleus , some are unicellular
5) organelles : perform the different functions the cell need
6) tissue: composed of many cell
7)cell : basic units of Life
8) Mathias schleiden : concluded that all plants are made up of cell
9) Theodore Schwann :concluded all animals are made up of cell
10) Rudolf Virchow : concluded that all cells come from pre-existing cell
It is B, and also for a moment I didn't understand that 4.69 x 10^22. I almost did this whole problem wrong.
1) Write the balanced equation to state the molar ratios:
<span>3H2(g) + N2(g) → 2NH3(g)
=> molar ratios = 3 mol H2 : 1 mol N2 : 2 mol NH3
What volume of nitrogen is needed to produce 250.0 L of ammonia gas at STP?
First, convert the 250.0 L of NH3 to number of moles at STP .
Use the fact that 1 mole of gas at STP occupies 22.4 L
=> 250.0 L * 1mol/22.4 L = 11.16 L
Second, use the molar ratio to find the number of moles of N2 that produces 11.16 L of NH3
=> 11.16 L NH3 * [1 mol N2 / 2 mol NH3] = 5.58 mol N2
Third, convert 5.58 mol N2 into liters at STP
=> 5.58 mol N2 * [22.4 L/mol] = 124.99 liters
Answer: 124,99 liters
What volume of hydrogen is needed to produce 2.50 mol NH3 at STP?
First, find the number of moles of H2 that produce 2.50 mol by using the molar ratios:
2.50 mol NH3 * [3mol H2 / 2 mol NH3] = 3.75 mol H2
Second, convert the number of moles to liters of gas at STP:
3.75 mol * 22.4 L/mol = 84 liters of H2
Answer: 84 liters
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Answer:
1 and 3
Explanation:
The vertical columns (groups) of the periodic table are arranged such that all its elements have the same number of valence electrons. All elements within a certain group thus share similar properties.
