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Science Questions
Where q1 and q2 is the amount of charge in Coulombs r is the distance in...
A transparent photographic slide is placed in front of a converging lens with a focal length...
Mark Whether are True of False 1. Indicator electrodes are typically made from relatively inert metals...
An ideal gas expands at a constant total pressure of 3.0 atm from 450 mL to...
You are performing an experiment with double slit interferrence in which you need the m=3 dark...
what is the molarity of an IV solution that is 90% of sodium chloride in water?...
As you dive down to check out a reef, the water exerts a pressure of 3...
If 23.9 mL of a NaOH solution is required to titrate 25.00mL of a 0.105M CH3CO2H...
Match the term with its correct definition. 1.retrovirus 2. reverse transcription 3. reverse transcriptase 4.Virus ...
If a reaction did not proceed due to the presence of water in the preparation of...
A container has sides with a length of 2.91 cm by 4.20 cm by 3.51 cm,...
How many moles of sucrose are contained in a 0.5 L solution of 0.32 M sucrose?
Is it possible for two spheres with same mass to have different moments of inertia? If...
A typical coal-fired power plant generates 1000 MW of usable power at an overall thermal efficiency...
A hare and a tortoise compete in a race over a straight course 1.50 km long....
For the equilibrium 2 SO3(g) <----> 2 SO2(g) + O2(g), Kc is 4.08 * 10-3 at...
For a weak base (B), a 0.0100 M and a 0.100 M solution was made. Students...
At time t=0 a grinding wheel has an angular velocity of 23.0 rad/s . It has...
An object's total energy is affected by a potential energy of the form U(x)=-6x^-2 (the potential...
Steroids are type of: A Simple lipids B Complex lipids C Derived lipids D Non of...
How many mL of glycerol (MW=92.1 g/mol, density 1.26 g/mL) must be used to prepare 250.0...
What is one way that food preservation has occurred over the years that you were not...
Question 13 During the ovarian cycle, which hormone is responsible for the growth of follicles in...
What would the concentration of CH3COO- be at pH 5.3 if 0.1M CH3COOH was adjusted to...
It takes 62.5 mL of a 0.420 M solution of HCl is titrated with Ca(OH)2. It...
Calculate the angular velocity of a 0.37 m radius car tire when the car travels at...
Explain why the differentiating characteristic is at the heart of achieving each of the four goals...
Enantiomers behave differently in the presence of other chiral molecules. Research the example of thalidomide to...
The speed of an electron is known to be between 3.5×10^6 m/s and 4.4×10^6 m/s ....
Consider a population of 10,000 cranes that is decreasing exponentially by 300 cranes per year. (Type...
A suitcase of 50.0 kg is pulled with a force of 900N at an angle of...
draw and denote the configuration/shape of the voltage-gated Na+ and K+ channels at: resting potential just...
What is the Kb for methylamine, CH3NH2, if a solution prepared by dissolved 0.82 mol of...
Consider the following reaction: NH4HS(s)⇌NH3(g)+H2S(g) An equilibrium mixture of this reaction at a certain temperature was...
Draw the mechanism for the base-catalyzed transesterification of a vegetable oil using methanol
Find the Ka value for 0.005L of unknown acid (0.2005M) mixed with 0.0025L of NaOH (0.1005M)....
How many moles of C2H4Br2 were mixed with 0.0875 moles of C3H6Br2 to obtain a solution...
1 atm=760 mmHg=101,325 Pa A closed container is filled with oxygen. The pressure in the container...
Steel train rails are laid in 14.0-m-long segments placed end to end. The rails are laid...
A star is 14.7 ly (light-years) from Earth. (a) At what constant speed (in m/s) must...
Determine the volume in milliliters of a 0.197 M NaOH solution needed to neutralize a 195...
A submarine is stranded on the bottom of the ocean with its hatch 25 m below...
A typical sound level for a buzzing mosquito is 35dB, and that of a vacuum cleaner...
If 155 cal are added to 29.4 g of solid iron, what is the change in...
A 2.00-kg block is tied to a wall and placed on top of a 5.00-kg block,...
Cats love to play with balls of yarn. If a 4.00 inch diameter ball of yarn...
Arthur and Betty start walking toward each other when they are 100.m apart. Arthur has a...
What is the pH of 0.245M solution of hypochlorous acid? Please include reaction equation for the...
Calculate the algal mass present in one liter of your water sample using chlorophyll a value...
2 Rate = Consider the overall reaction: AB(g) + CB(g) ⟶ A(g) + CB2(g) A proposed...
Components of a muscle that provide information about rate of change in muscle length describe: Select...
A square current loop 4.6 cm on each side carries a 550 mA current. The loop...
Part A: Calculate the pH of 0.61 M NH3 (Kb=1.8×10−5). Part B: Calculate the concentrations of...
1. Order the Drosophila life stages in chronological order (if the stage happens first match it...
Name at least three methods, besides Fajan's titration, that are used to determine chloride in aqueous...
A certain liquid has a vapor pressure of 92.0 Torr at 23.0 ∘C and 273.0 Torr...
After 70 years, 40 % of a radioactive material decays. What is the half-life?
A calorimeter contains 35.0 mL of water at 14.5 ∘C . When 1.80 g of X...
At a particular instant, an electron moves eastward at speed V in a uniform magnetic field...
How many electrons are transferred in each of these 2 reactions? 1. hcooh--> co2+h2 2. hcooh+h2o-->ch3oh+o2
Does a positive s’ value correspond to a real or a virtual image? Does a positive...
please explain 1) what are the concept of significant figures, measurement, and mole? 2) why is...
Calculate the pH at the equivalence point in the titration of 60.0 mL of 0.140 M...
A solution is made by dissolving 20.1 g of HCl in enough water to make 544...
A 0.5m long, thin uniform bar is pinned at its center. It is spinning on a...
For this assignment you will build a decision tree (sometimes referred to as a flowchart) that...
A student drops a 0.35 kg piece of steel at 42°C into a contaoner of water...
How are cities like New york city and Boston,Massachusetts relevant to Allentown PA? How can the...
A converging lens with a focal length of 6.50 cm forms an image of a 3.80...
the grams of carbohydrate in one apple if the apple has no fat and no protein...
Two children stretch a jump rope between them and send wave pulses back and forth on...
Diborane, B2H6, can be produced by the following reaction: 〖2NaBH〗_4 (s)+H_2 〖SO〗_4 (aq)→〖2H〗_2 (g)+〖Na〗_2 〖SO〗_4 (aq)+B_2...
An object of mass Msub1=7.3 kg moving at 4.9 m/s strikes a stationary second object of...
A loaded ore car has a mass of 915 kg and rolls on rails with negligible...
1. we want to find the Energy of Assembly for the helium (EoA) atom. This atom...
Measurement of nitrogen in water in the form of nitrite NO2- can be achieved by diazo...
Tarik winds a small paper tube uniformly with 165 turns of thin wire to form a...
A 52.16−g sample of water at 79.2°C is added to a sample of water at 23.9°C...
The percent by mass of bicarbonate (HCO3−) in a certain Alka-Seltzer product is 32.5 percent. Calculate...
If 1340 kJ of heat is required to melt 4.00 kg of ice at 0 ℃℃...
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