What is the frequency of radiation that has a wavelength of 1.73 nm? (HINT: Don't forget that you have to convert nm to m first.)

Answers

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Salt & sugar do not appear to have a fix shape.why do we call them solid

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they do have a fixed shaed because they are crystals. theye are very very tiny, but salt is crystals in the shape of cubes, and sugar has completely irregular crystals. salt can be mined for example - rocks of pure salt are solid, no? :)

Properties that make titanium useful for tennis rackets and wheelchairs

Answers

Low density, high tensile strength. Wheelchairs and tennis racquets are better when lightweight, without detracting from their quality (strength).

Answer:

Low density, high tensile strength. Wheelchairs and tennis racquets are better when lightweight, without detracting from their quality (strength).

Explanation:

The pigment which determines skin color is .

Answers

The pigment which determines skin color is Melanin

melanin , as far as I know

Given the balanced equation:F2 energy → F F
Which statement describes what occurs during
this reaction?
(1) Energy is absorbed as a bond is formed.
(2) Energy is absorbed as a bond is broken.
(3) Energy is released as a bond is formed.
(4) Energy is released as a bond is broken.

Answers

Answer: The correct option is 2.

Explanation: We are given in the question that Fluorine molecule is dissociating into two Fluorine atoms. Equation for the following is given by:

$F_2+energy\rightarrow F+F$

In a chemical reaction if the energy is written at the reactant side, the energy is being absorbed and if the energy is written at the product side, the energy is being released.

From the given chemical equation, the energy is written at the reactant side, so the energy is being absorbed by the reactants in order to break the bond between $F_2$ molecule to form 2 individual Fluorine atoms.

Hence, the correct option is 2.

(2) Energy is absorbed as a bond is broken is the correct answer.

What is the solution called in the buret during a titration?

Answers

Answer:

The solution in the buret, during a titration is called titrant.

Explanation:

A titration is a useful process, that makes you know the concentration of a solution. A titrant solution (burette) is evaluated against a titrand to control the pH changes against the volume aggregate. Only a strong acid with a strong base, a strong base with a strong acid, a weak acid with a strong base and a weak base with strong acid are valued.

When the pH reaches the equivalence point, it is said that the normality of the acid by the milliequivalents, is equal to the basic normality by its milliequivalents. In conclusion, the entire base / acid became its conjugate pair.

To check this sudden change in pH, a substance is used, called Indicator that changes the color of the titrand (analyte).

Final answer:

In a titration analysis, the substance in the buret is called the 'titrant'. It is used to react with the analyte, the sample solution whose concentration we're measuring. The goal is to reach the endpoint, the point when a distinct visual change indicates that the titrant has completely reacted with the analyte.

Explanation:

In a titration analysis, the solution in the buret is called the titrant. This solution contains a known concentration of a substance. During a titration, this titrant is added incrementally to a sample solution, called the analyte, which contains the substance whose concentration is to be measured. The titrant and analyte undergo a chemical reaction of known stoichiometry.

By measuring the volume of the titrant solution needed to completely react with the analyte, scientists can calculate the concentration of the analyte. This point where the titrant has completely reacted with the analyte is termed the equivalence point of the titration. The process of adding the titrant is halted when a distinct change is visually detected in the solution - this could be a color change, for example. This is known as the end point.

Learn more about titration here:

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What would happen if you added more than 5 mL of H2O2 to the 5 mL of yeast solution?

Answers

Answer:

The hydrogen peroxide would dissociate down into oxygen and water.

Explanation:

The hydrogen peroxide dissociates into oxygen and water.

2H₂O₂ → 2H₂O + O₂

The yeast comprises an enzyme known as catalase that catalyzes the reaction. Greater the concentration of the catalyst supplemented, the faster will be the decomposition of the hydrogen peroxide. Therefore, if one adds more than 5 milliliters of H₂O₂ to the yeast solution, the dissociation would take place at a quicker rate, and the bubbles and the accompanying fizz would be in a higher amount.

The yeast breaks down the hydrogen peroxide (H2O2) into oxygen and water.

Other Questions

How many moles of nitrogen trifluoride (NF3) can be produced from 9.65 mole of Fluorine gas (F2)N2 + 3F2 -----------> 2NF3

What is the speed of a man that travels 2 meters in 6.5 seconds?

26 PONITS FOR BEST ANSWER28 Which of the following is not related to the First Law of Motion? An object in motion stays in motion unless acted on by an outside force. An object at rest will stay at rest. An object must overcome inertia to begin moving. Having a heavier mass may increase the force of a moving object. 29 Which of the following is not an example of friction? Pouring water off a bridge and watching it turn to small drops by the time it hits the ground. A wrecking ball swinging towards its target. A piece of ice dropping into a glass of water that sinks more slowly than it fell through the air. Smoothing an ice rink with a Zamboni. 30 What three quantities are involved with the Second Law of Motion? acceleration, gravity, inertia acceleration, inertia, force mass, gravity, acceleration acceleration, force, mass 31 Why do phytoplanktons have projections and form long chains? To catch more food To respire oxygen more efficiently To keep from sinking and capture more light To evade predators 32 If an object's acceleration is zero, which of these could be true? it is slowing down it is stopped it is not changing its speed Both B and C could be true

Consider the following reaction: SO2Cl2(g)⇌SO2(g)+Cl2(g) A reaction mixture is made containing an initial [SO2Cl2] of 2.2×10−2M . At equilibrium, [Cl2]= 1.3×10−2M . Calculate the value of the equilibrium constant (Kc).