1. What is a wave?a.) a vibrating disturbance that transfers energy from place to place
b.) a material which a wave travels through
c.) an area where coils spread out
d.) the maximum distance a medium moves from its rest position

Answers

Answer 1

Answer:

Answer:

Explanation:

A wave is a disturbance that moves energy from one place to another. Only energy — not matter — is transferred as a wave moves. The substance that a wave moves through is called the medium. That medium moves back and forth repeatedly, returning to its original position. But the wave travels along the medium

Related Questions

If the enthalpy change of a reaction in a flask is δh = +67 kj, what can be said about the reaction?
What mass of nitrogen gas is required to react completely with 2.79 g of hydrogen gas to produce ammonia?
Practice the Skill 21.15b When the following ketone is treated with aqueous sodium hydroxide, the aldol product is obtained in poor yields. In these cases, special distillation techniques are used to increase the yield of aldol product. Predict the aldol addition product that is obtained, and propose a mechanism for its formation. For the mechanism, draw the curved arrows as needed. Include lone pairs and charges in your answer. Do not draw out any hydrogen explicitly in your products. Do not use abbreviations such as Me or Ph.
A first-order decomposition reaction has a rate constant of 0.00140 yr−1. How long does it take for [reactant] to reach 12.5% of its original value? Be sure to report your answer to the correct number of significant figures.
1. Write the structural formulas and give IUPAC names for all isorneric alcohols of molecular formulaС4Н9OH

The enthalpy of vaporization (ΔH°vap) of benzene is 30.7 kJ/mol at its normal boiling point of 353.3 K. What is ΔS°vap at this temperature? a. 383 J/(mol·K) b. 0.0115 J/(mol·K) c. 86.9 J/(mol·K) d. 0.087 J/(mol·K) e. 11.5 J/(mol·K)

Answers

Answer: The correct answer is Option c.

Explanation:

Vaporization is defined as the physical process in which liquid particles get converted to gaseous particles.

$Liquid\rightleftharpoons Gas$

The value of standard Gibbs free energy is 0 for equilibrium reactions.

To calculate $\Delta S^o_(vap)$ for the reaction, we use the equation:

$\Delta S^o_(vap)=(\Delta H^o_(vap))/(T)$

where,

$\Delta S^o_(vap)$ = standard entropy change of vaporization

$\Delta H^o_(vap)$ = standard enthalpy change of vaporization = 30.7 kJ/mol = 30700 J/mol (Conversion factor: 1 kJ = 1000 J)

T = temperature of the reaction = 353.3 K

Putting values in above equation, we get:

$\Delta S^o_(vap)=(30700J/mol)/(353.3K)=86.9J/(mol.K)$

Hence, the correct answer is Option c.

Final answer:

The change in entropy (ΔS°vap) of benzene at its normal boiling point can be calculated using the enthalpy of vaporization (ΔH°vap) and the temperature (T). The ΔS°vap for benzene at 353.3 K is 0.087 J/(mol·K).

Explanation:

The enthalpy of vaporization (ΔH°vap) of a substance is related to the change in entropy (ΔS°vap) by the equation ΔS°vap = ΔH°vap / T, where T is the temperature in Kelvin. We are given that the enthalpy of vaporization of benzene at its normal boiling point (T = 353.3 K) is 30.7 kJ/mol. Plugging these values into the equation, we can calculate ΔS°vap to be 30.7 kJ/mol / 353.3 K = 0.087 J/(mol·K).

Learn more about Enthalpy of vaporization here:

brainly.com/question/32361849

#SPJ3

Differentiate between the formation of biochemical rocks and the formation of inorganic chemical rocks.Biochemical rocks form from organisms that were once alive, such as limestone from marine shells, whereas inorganic chemical rocks form from non-biological processes, such as salt that is left behind when a lake evaporates.

Answers

In contrast to inorganic chemical rocks, which result from non-biological processes such as salt left over when a lake evaporates, biochemical rocks are formed by once-living creatures, such as limestone from marine shells.

The process, which is inorganic and frequently the consequence of a body of water evaporating and concentrating the ions, occurs in chemical sedimentary rocks. The formation of one kind of sedimentary rock may be mediated by both chemical (inorganic) and biological (organic) processes. Aragonite and calcite make up limestone. The majority of limestone is biological in origin, while it can also occur as a chemical sedimentary rock that forms inorganically as a result of precipitation. In actuality, limestone is the biochemical sedimentary rock that is found most frequently. In marine (i.e., oceanic or salty sea) settings, nearly all limestone

learn more about limestone Refer:brainly.com/question/8815312

#SPJ4

How is Hess's law used to measure enthalpy of a desired reaction?A. The enthalpy is obtained from the enthalpy of an intermediate
step.
B. The enthalpy is determined from the enthalpy of similar reactions.
C. The enthalpy from the final equation in a series of reactions is
used
D. Intermediate equations with known enthalpies are added together.

Answers

Hess's law is used to measure the enthalpy of a desired chemical reaction because: D. Intermediate equations with known enthalpies are added together.

What is Hess's Law?

Hess's Law is also known as Hess's law of constant heat summation (enthalpy) and it was named after a Swiss-born Russian chemist called Germain Hess.

Hess's Law states that the energy change (enthalpy) experienced in a desired chemical reaction is equal to the sum of the energy changes (enthalpies) in each chemical reactions that it is made up of or contains.

Read more on Hess's Law here: brainly.com/question/9328637

Hydrazine, N2H4, is a weak base and is used as fuel in the space shuttle.N2H4(aq)+H2O(l)âN2H5+(aq)+OHâ(aq)

Part A

If the pH of a 0.133 M solution is 10.66, what is the ionization constant of the base?

Express your answer using two significant figures.

Answers

Answer:

Kb = 1.6*10^-6

Explanation:

The given reaction is:

$N2H4(aq)+H2O(l)\rightarrow N2H5+(aq)+OH-(aq)$

The ionization constant of the base Kb is given as:

$Kb = ([N2H5+][OH-])/([N2H4])------(1)$

The pH = 10.66

therefore, pOH = 14-pH = 14-10.66 =3.34

$[OH-] = 10^(-pOH) =10^(-3.34) =4.57*10^(-4) M$

[N2H5+] = [OH-] = 4.57*10^-4M

[N2H4] = 0.133 M

Based on eq(1)

$Kb = ([4.57*10^(-4)]^(2))/([0.133])=1.6*10^(-6)$

Counting atoms worksheet

Answers

Answer: if you are looking for a worksheet go to teachers pay s teachers or Pinterest

Explanation: these are very reliable sources to find good worksheets

A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: The label on the graduated cylinder says: empty weight: 4.5 g She put some solid sodium hydroxide into the graduated cylinder and weighed it. With the sodium hydroxide added, the cylinder weighed 48.772 g. She added water to the graduated cylinder and dissolved the sodium hydroxide completely. Then she read the total volume of the solution from the markings on the graduated cylinder. The total volume of the solution was 152.3 mL. What concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits.