Algebraic expression: It is an expression which is frame from the variables (x,y etc.), integer constants and algebraic operations (+,- , multiplication and division etc.).
Sequence is defined as the structured list of numbers.
Now, according to the given sequence, first place is , second is , third is , fourth is . Thus, place of the sequence should be determined.
The place of the sequence is . Therefore, option (A) is correct.
The percent yield of indigo : 79.6%
<h3>Further explanation</h3>
Percent yield is the comparison of the amount of product obtained from a reaction with the amount you calculated
General formula:
Percent yield = (Actual yield / theoretical yield )x 100%
An actual yield is the amount of product actually produced by the reaction. A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients
Reaction
2C₁₀H₁₁NO₄ + 2H₂O → C₁₆H₁₀N₂O₂ + 2C₂H₄O₂ + 4H₂O
Actual yield = 1.87 g
Theoretical yield = 2.35 g
The percent yield of indigo :
The five types of states of matter are solid, liquid, gas, plasma and Bose-Einstein condensate.
Solid objects do not move a lot relative to themselves. Their molecules stay stacked neatly with no intermolecular spaces. They do not have much energy, or heat hence the molecules in solid state don't show movement.
Liquid state have more heat and more energy and a little more intermolecular space than solid. Their molecules are no longer stacked neatly due to presence of air capsules, but they still touch each other. Their structure is uncertain and can flow, their shape will alter quickly and dramatically with outside forces, but they will essentially remain a single mass unless pushed apart.
Gasses have even more energy than liquid and solid. Due to presence of high intermolecular spaces they flow like liquids, but are even more susceptible to the forces acting on them. Their molecules don’t touch each other, but are still close enough to bounce into one another frequently.
Plasma is the state of matter which is like a gas on steroids. Molecules of plasma might start in the same area, but rarely touch each other. Plasma molecules have lost electrons, and have become charged. Plasma molecules set other things on fire, and even vaporize them.
Bose-Einstein condensate or BEC was first created by scientists in the year 1995. This was created using a combination of lasers and magnets, Eric Cornell and Carl Weiman, scientists at the Joint Institute for Lab Astrophysics (JILA) in Boulder, Colorado, cooled a sample of rubidium to within a few degrees of absolute zero.
Learn more about types of matter from the link given below.
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The factors to be kept constant in the experiment are:
- temperature
- volume of ice
- pressure.
The greater the quantity of salt added, the faster the rate of the melting of ice.
<h3>How does the quantity of salt added affect the rate at which ice will melt?</h3>
The melting of ice when salt is added is due to the lowering of the melting point of ice by the salt.
The rate of the reaction is directly proportional to the concentration or amount of salt added.
Therefore, the greater the quantity of salt added, the faster the rate of the melting of ice.
The factors to be kept constant are:
- temperature
- volume of ice
- pressure.
In conclusion, the rate of melting of ice increases with increase n the quantity of salt added.
Learn more about salt and melting of ice at: brainly.com/question/17118985
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