The following table shows a set of data collected by the Virginia Tech team. The lead levels in water are expressed in units of parts per billion (ppb). 1 ppb = 1 g Pb/10° parts solution. Examine the data and answer the questions that follow: Q1: Determine the average value of lead for the following a. first draw 1. 45 second flush 2.2 min flush

Q: Please correct answer and don't use hend raiting

A: 1. Calculate the energy of the photons:The wavelength of the light is 207 nm.Use the formula E = hc…

Q: (e) If both have the same uncertainties in their speeds, will B4+ ions have larger or smaller…

A: The Heisenberg Uncertainty Principle states that it is impossible to simultaneously measure the…

Q: Crystals are important in everyday life. A good example of a useful crystal is One way to grow…

A: We have to fill in the blanks for the above question.

Q: Why is the y intercept of a regression line 0?

A:

Q: Is the answer that you got for the blue box or the "?"?

A:

Q: I got 0.03844 when I used the quadratic by hand...did I make a mistake somewhere?

A: Answer: Quadratic formula used to solve quadratic equation ay2+by+c=0 is shown below: y=-b±b2-4ac2a

Q: In the figure, which arrow designates the amplitude of the pendulum's motion? arrow A arrow B arrow…

A: The arrow which designates the amplitude of the pendulum's motion is arrow D.

Q: Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product…

A: Certainly! The reaction you're describing involves the addition of bromine (Br2) and sodium…

Q: This format is confusing.  Can you please rewrite this?

A: Using dilution formula and unit conversion, volume of concentrated HNO3 required and concentration…

Q: Is “what is the typical distance a moped can be driven on a single tank of gas?” A statistical…

A: ANSWER:-                      We know that a question whose response give a dataset that can be…

Q: 4. On image

A: Given that  Concentration of Pb2+ = 0.0012M  Concentration of Cl- = 0.010M  Ksp = 1.6× 10-6

Q: True or false? A. Phosphorescence occurs at higher energy then fluorescence. B. Fluorescence occurs…

A: An immediate emission of light radiation absorbed by the atoms or molecules is known as…

Q: Calculate the linear momentum of a pickup truck that has a mass of 945 kg and is traveling eastward…

A:

Q: solve the problem using SF and PsN. Need help understanding help please

A:

Q: Explain why it makes sense that most energies of formation on the data sheet are almost all negative…

A: The question is based on the concept of chemical thermodynamics. We have  to explain enthalpy of…

Q: РСС 0-H 10.

A: PCC is a mild oxidizing agent. It oxidizes primary alcohols to aldehydes and secondary alcohols to…

Q: The following are two sets of data for the atomic mass of antimony the work of Willard and McAlpine…

A:

Q: Study the problem and proposed solution below. Is the final answer correct? Then click the No…

A: Given,the velocity of a gliding bird = 82. cm/sthe distance = 2.7 m

Q: Solve for T1. P1V1/T1=P2V2/T2   and also... Solve for V2. P1V1/T1=P2V2/T2

A: T1 can be solved as shown.

Q: whats the longhand and shorthand configuration

A: The electronic configuration of an element gives the outline of the electrons' distribution in…

Q: Use the Midpoint Rule with the given value of n to approximate the integral. Round the answer to…

A:

Q: DENSITY Learning Objectives After completing this Lecture Tutorial, students should be able to:…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: For the first problem, shouldnt it only be e^-1 instead of 2e^-1?

A: We have to balance the given reaction in the acid medium. The given reaction is H3AsO3(aq) + I2(aq)…

Q: The following options are in the second picture

A: To write the condensed formula