The speed that a body of any mass must have to escape from the earth is 1.07 x 10ª m s-'. At what temperature would the average speed of A] an H2 molecule, and B] an O2 molecule to be equal to this escape speed?

Q: It is thought that a solid substance has an orthorhombic structure. Since the edges of the unit cell…

A: The parameters of the orthorhombic solid substance is given to be a= 3.50 Å, b= 4.0 Å and c=5.5 Å.…

Q: Je The normal freezing point of a certain liquid X Is 2.30 °C, but when 74.0 g of barlum hydroxide…

A:

Q: 1. Convert each of the following to the indicated unit and express your answers in scientific…

A: To convert from one unit to another , multiply by a conversion factor.

Q: (e) (83.145 m - 83.142 m)/(4.52 sx 2.208 s) = i Units m/s^2 Hint Assis

A: Calculation can be done by use of addition/substraction,  multiplication or division to solve for…

Q: a) Convert 100 Btu to kcal b) Convert 100 hp to kW

A: In this question we need to use the conversion factor to convert the unit to the desired unit.  Btu…

Q: How many equivalents are in the following?

A:

Q: 146C -->   0-1e    +    _______________?

A:

Q: The following image depicts a centrifuge rotor with six sample holders. The blue sample holders…

A: To use a centrifuge rotor, we need to balance it. To balance it - All sample tubes should be evenly…

Q: 4. In the following P-T diagram for potassium, does fcc or bcc have the higher density and will fee…

A: It is clearly seen from the graph that FCC exists exist at high temperature as compared to BCC. High…

Q: 8. The four gases above are under the same conditions. In other words, each container has the same…

A: We will use concept of ideal gas equation. PV= nRT

Q: What is the pH of the titrated solution at the equivalence point? (use Kb, and and ICE table)

A: AT equivalence point,  moles of acid = moles of base added. Substituting given values, the volume…

Q: Droperidol is used to treat postoperative nausea. An order is given to administer 0.263 mg…

A: To calculate the flow rate in milliliters per hour, we first need to determine how many milligrams…

Q: 1. For the reaction below: a. b. Predict the products and show the mechanism using curved arrows.…

A: To predict the products and show mechanism using curved arrows.

Q: What is the mass of an object that has 20 N of force and acceleration of 4 m/s2

A: According to Newton's second law of motion, F = m a F is the force m = mass a = acceleration.

Q: a physician orders kelfin 500 mg every 6 hours for your patient. Kelfin 1 gm/10mL is avaiable for…

A: Given : dose of medicine = 500 mg every 6 hours. Concentration of available medicine = 1 g/10 mL =…

Q: 12+5029 x 5280+21

A: The given problem can be solved using the BODMAS rule. In this rule, we need to operate in the order…

Q: 17. 4.73 x 10' centimeters (cm) to inches (in.) 1. %! %3D %3D 18. 370 grams (g) to pounds (Ibs.)

A:

Q: 6. (aq) (aq) BaCl, (aq) + H,O (1) +

A: Redox reaction is a simultaneous reduction of one compound and oxidation of another compound.…

Q: 50 μl sample 50 μl Sample Tube dilution Final dilution 100 μl diluent 50 μl 100 100 μl diluent 50 μl…

A: The objective is to determine the tube dilution and final dilution for the given serial dilution…

Q: 1-Two Students A and B performed four analyses on a sample for its calcium content and got the…

A: Accuracy is a measure of the difference between the experimental value or mean value of a set of…

Q: Answers 1-10

A:

Q: HO H Drawing 1. CH3CH₂Li 2. H3O+

A: Given that, the reaction is:

Q: What is the molal concentration of the brine solution (227 g salt + 3 780 g water)?

A: 1.Molality = moles of solutemass of solvent in kg  Molality of brine = 227g NaCl × 1mol58.44…

Q: Running at a rate of 6 mi/h uses 661 Calories in an hour. Convert this value to (a) J/h and (b)…

A: Given that running at 1 mile/hr uses 661 calories in an hour. So rate is 661 cal/hr.

Q: TRUE OR FALSE 1. Examples of personal protective equipment includes lab coats, long pants, closed…

A:

Q: 19. What is the precision in milliliter (mL) of the volumetric instrument below? SO 4788 50:2ml RAND…

A: It is 50 ml measuring cylinder. There are 4 lines in between every 10ml  gap.

Q: 1:35 Sun, 16 June b III = University of South Australia SP2 2024 Chemistry 100 Week 11 (20/5 - 24/5)…

A: The answer is a. CuO.Sodium chloride (NaCl) has a crystal lattice structure where each sodium ion…

Q: + e Home ourse.html?courseld=15539865&HepID=676f177415469ec3dc78ff3c8 bf724d9#1 0001 Inbox-Outlook…

A: Gay-Lussac’s law states that the pressure of a fixed amount of gas is directly proportional to the…

Q: I Review | Constants | Periodic Table A 40-lb container of peat moss measures 14x 20x 30 in A 40-lb…

A: Given that : Dimensions of 40-lb container of peat moss =  14 in x 20 in x 30 in. Area to be covered…

Q: Draw a best fit line that represents all 5 data points and calculate the slope of the best fit

A: The Best Fit to the given 5 data points is shown below

Q: Solve for x. -16 -8 x-3

A:

Q: The concentrations of K* in water were measured with atomic absorption spectroscopy (AAS) and atomic…

A: The t-value, or t-score, is a ratio of the difference between the mean of the two sample sets and…

Q: penicillin V potassium is to be administered to a child weighing 47 lb. the dosage rate is 15 mg per…

A: Molar concentrations is defined as mass of solute divided by volume of solution.

Q: Draw the starting structure that would lead to the following two products under these conditions.…

A: Ozonolysis is the process where an alkene is converted into carbonyl compound.

Q: 1/T(K) ln(p) 0.00341 -4.33 0.00295 -1.335 0.00267 0     Graph the following using excel

A: Given data are

Q: 3.41 × 10-1 - 5.7 × 10-3)*[(6.8 × 10-2)/(1.82 × 10-3)]

A: The question is based on the concept of physical chemistry. we have to calculate the given fraction…

Q: Temperature is a macroscopic measurement of a microscopic phenomenon Group of answer choices True…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: The volume of a sample of chlorine gas is 5.00 liters at 45.0 degrees Celsius and 0.966 atm. How…

A: We will use ideal gas equation to get the answer.

Q: 1. What is the approximate population for: a. The world: b. China: Population Math Practice c.…

A: 1) The approximate population of  a) World: 8 billion b) China: 1.426 billion c) India: 1.417…

Q: A chemistry student needs 5.00 g of acetyl bromide for an experiment. She has available 1.0 kg of a…

A: we have to find mass of solution students should use

Q: Convert 1( slug-ft/s2) to mega pascal.

A: In this question, we have to convert 1 (slug ft/s2) to mega pascal. A slug is a unit of mass which…

Q: (Mg At. wt. = 24 g mole) %3D 6 cmole) of Mg2* weigh: 720 mg O144 mg O 2880 mg O1440 mg

A: Mole of a substance or a mole of a particles is defined as exactly 6×10^23 particles which may be…

Q: H +

A: Pyridine is a base which can abstract the hydrogen (proton) and form product.

Q: A patient is to receive: 600.0 mL IV fluid over 8.00 hours . The drop factor for the tubing is 12.0…

A: Given, 1 drop = 1 gtt The drop factor for tubing = 12.0 gtt/mL = 12.0 drops/mL

Q: An IV pump delivers medication at a contstant rate of 24mg/hr. How long does it take to deliver 90mg

A: Given information: Rate of medication deliver = 24 mg/hr

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.