that liquid pressure increases with the depth on the basis of the following points materials required
4.2 g of lithium (Li) reacts with 2.8 g of nitrogen (N2). Find the simplest molar ratio in which lithium reacts with nitrogen.
The simplest molar ratio in which lithium reacts with nitrogen is 6 moles of lithium to 1 mol of nitrogen.
What is molar ratio?
A molar ratio examines the ratio that exist between two chemical compounds showing the amounts in moles of the compounds involved in a chemical reaction.
Molar ratio = amount of a constituent in moles ÷ total amount of all constituents in a mixture in moles
Given:
Mass of lithium (Li) = 4.2 g
Mass of nitrogen (N2) = 2.8 g
Total amount of mass = 7g
Moles = molecular weight ÷ mass of water
Moles of lithium (Li) = 4.2 ÷ 7 = 0.60 mol
Moles of nitrogen (N₂) = 2.8 ÷ 7 = 0.10 mol
Therefore, ratio Li : N₂ = 0.60 : 0.10 = 6 : 1
6 Li + N₂
The balanced equation between lithium and nitrogen, to form lithium nitride = 6 Li + N₂ → 2 Li₃N₆L i + N₂ → 2Li₃N
In summary, the simplest molar ratio in which lithium reacts with nitrogen is 6:1
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Which of the following is true about two neutral atoms of the element gold? (1 point) a The nucleus is missing in both. b Each has a different mass. c Both have the same properties. d Each has a different number of electrons.
Answer: The nucleus is missing in both. Each has a different mass. Both have the same properties. Each has a different number of electrons.
Explanation: Thank me please! have a great day! :)
does anyone know the answer to this question?
Error Percent = (80.6 - 80.4)/ 80.6 X 100 (Option a is correct)
What is the formula for calculating percentage error?Use the following equation to determine the percentage of error: [(exact value - approximate value)/exact value] x 100. Start by deducting the exact value from the approximate value. After that, divide that number by the precise amount. To get the percentage inaccuracy, multiply your response by 100 after converting fractions to decimal form.The absolute error, which is just the difference between the observed and the real value, is used to calculate percentage error. The relative error is then multiplied by 100 to produce the percentage error after the absolute error has been divided by the real number.To learn more about : Absolute error
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Provide two functions of the sweat gland pore.
Answer:
regulate temperature and remove waste
d is movement of molecules from high concentration to low concentration. an example is lemon essential oil used in one corner of the room but soon smelled in the opposite corner.
A substance diffuses when it moves from a region of high concentration to one of low concentration. Because the particles in liquids and gases travel randomly from one location to another, diffusion occurs in these media. For living things, diffusion is a crucial process because it governs the flow of materials into and out of cells.
A net migration of anything from a zone of higher concentration to a location of lower concentration can also be described as it, and a gradient in concentration is what's driving it.
Without spending the cell's energy, substance that crosses a cell membrane travels away from the region where it is concentrated.
Passive transport is the term for it.
It is the process by which substances migrate down the gradient of concentration without utilizing cellular energy.
Simple diffusion is another name for it.
Due to the difference in concentration from the perfume bottle to the outside environment, when a perfume bottle is opened, particles disseminate in the air.
While, active transport substances should move in the opposite direction of the concentration gradient, or toward the area of higher concentration.
Energy is needed for this procedure.
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a chemist makes 86.94 grams of a black powder by reacting 54.94 grams of manganese with 32.00 grams of oxygen. if a student breaks down 144.9 grams of that powder, what mass of manganese will be made? [mn]
Based on the data given, we can make a simple proportion to calculate that 91.57 grams of manganese would be produced by the decomposition of 144.9 grams of the powder.
The initial composition of the powder tells us that in 86.94 g of it there are 54.94 grams of manganese. We can make a simple proportion to calculate how many grams of manganese are produced by decomposing 144.9 grams of the powder:
86.94 grams of powder : 54.94 grams of Mn = 144.9 grams of powder : X
X = 54.94 grams of Mn * 144.9 grams of powder / 86.94 grams of powder
X = 91.57 grams of Mn
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