A the volume of a right circular cylinder is v x pi x x x find the radius and

te shape a definite volume and no definite shape no definite volume but a definite shape no definite volume or shape

here are 2.00 mol of Gas A in the mixture, how many moles of Gas B are present? (R = 0.0821 L • atm/(K • mol)) (b) The gas in a 250. mL piston experiences a change in pressure from 1.00 atm to 2.80 atm. What is the new volume (in mL) assuming the moles of gas and temperature are held constant? (c) Small quantities of Oxygen can be produced by the decomposition of mercury(II) oxide as shown below. Typically, the oxygen gas is bubbled through water for collection and becomes saturated with water vapor. Atomic weight of HgO = 216.6 amu, Atomic weight of Oxygen = 32.00 amu) 2 HgO(s) → 2 Hg(ℓ) + O₂(g) (i) Assuming that 3.05 grams of HgO was used in this reaction, determine the number of moles of oxygen gas formed.(According to the above chemical equation) (ii) Assuming 310. 0 mL of Oxygen gas was collected at at 29°C, calculate the pressure of the Oxygen gas that was collected. (R = 0.0821 L • atm/(K • mol) (iii) If the vapor pressure of water at this temperature equals to 0.042 atm, calculate the pressure reading of this experiment.

a) A scientific theory must be able to be proven. b) A scientific theory has been derived from known facts and always applies. c) A scientific method should give different results depending on who performs the method. d) Knowledge of our surroundings usually emerges through an interplay between theory and experiment. 2) The sides of a straight block are measured to 3,202 cm; 0.0012 cm and 11.2 cm, respectively. Calculate the volume of the straightening block and enter it with the correct number of value digits. (2/0/0) Number of words: 0 3) A 9.2 dm long and evenly thick rod rests on a support. 0.55 dm from one end, a dynamometer is hung so that the rod will hang horizontally. Then the dynamometer shows 4.4 N. How much does the bar weigh? (1/1/0) Number of words: 0 4) A bar AB that is homogeneous and evenly thick has a length of 2.70 m and is rotatable about an axis at A. The bar weighs 25 kg and is kept in equilibrium by a force F which has its point of attack in B. is 45 degrees. How big is the force F? (1/1/0) Saved! 25 * 9.82 = 245.5 N Number of words: 6 5) A trolley rolls at a constant speed to the right. On the cart is an upward cannon that suddenly shoots a bullet. The carriage continues to the right with the same speed as before. Where does the bullet end up when it falls? For a detailed reasoning. (1/1/1) Number of words: 0 6) A river is 200 m wide. The water in the river flows at a speed of 2.5 m / s. A motorboat steers across the river at its maximum speed, which in stagnant water is 5.0 m / s. The boat is constantly heading perpendicular to the banks of the river. Where does the motorboat land on the other shore? (2/0/0) Number of words: 0 7) A ball with a mass of 2.0 hg moves at a constant speed in a circular path. The radius of the track is 1.5 m and it takes the ball 3.0 seconds to move one turn. How big is the centripetal force? (1/1/0) Number of words: 0 8) A bullet moves at a constant speed. Can we then safely say that the resultant of the forces acting on the bullet is zero? Motivate and discuss your answer. (0/1/1) Number of words: 0 9) A conductor is located between the poles of a permanent magnet. The current in the conductor goes in the direction of the plane of the paper (away from the reader). How is the force acting on the leader directed? (1/0/0) a) To the right of the figure b) To the left in the figure c) Downwards in the figure d) Upwards in the figure 10) Protons enter horizontally from the left between two large metal plates at a speed v = 0.80 Mm / s. The plates are connected to a voltage source with the pole voltage U. Between the plates there is a homogeneous magnetic field with a flux density of 38 mT directed perpendicular to the plane of the paper. The distance between the plates is 1.5 cm. They want the protons to continue with unchanged direction and speed between the plates. Which of the plates should be connected to the positive pole of the voltage source and how large should the voltage U be? (0/2/0) Number of words: 0 11) The magnetic flux Φ through a 700-speed coil decreases linearly with time according to the diagram below. Calculate the voltage across the coil at time t = 1.0 ms. 12) The current in a coil with an inductance of 35 mH has a growth rate of 6.2 A / s at a given moment. What is the instantaneous value of the ems induced in the coil?

r litre? What would have been the concentration of HNO3 AFTER the 0.1000g of Li was added and allowed to react with some of HNO3? (Hint - Lim XS Problem) What would have been the pH of your acid solution after the metal was added? If you wanted to fill a rubber balloon to an internal volume of 5.000L and pressure of 140.0kPa in a 25.00C room with hydrogen gas from the reaction of your metal and acid (Li and HNO3), what is the minimum quantity in millilitres of an 8.000M solution of your acid you would need to generate enough hydrogen gas? (assume you have more than enough metal).

ht. b) Explain the graph in the context of the problem. b) Explain any restrictions on x in the context of the question.

itially, the balloon contains 4 ft3 of hydrogen and it takes 14 seconds to com- pletely fill the balloon. (a) At what rate is the balloon filled? (b) Find a linear function V that models the volume of hydrogen in the balloon at any time t. (c) What can you say about the graph of V ? (You do not need to sketch the graph.)

s 1600 cubic inches. The height of the box is 8 inches and the length of the box is 2 times longer than the width of the box. What is the width of the box?

boxes and large boxes. The volume of each small box is 6 cubic feet and the volume of each large box is 12 cubic feet. There were twice as many small boxes shipped as large boxes shipped and the total volume of all boxes was 168 cubic feet. Write a system of equations that could be used to determine the number of small boxes shipped and the number of large boxes shipped. Define the variables that you use to write the system.

At what rate is the volume of the snowball decreasing when the diameter is 9 cm. Formula for volume of sphere is V=(4/3)pi(r^3)

the Pythagorean theorem to test if your structure has square corners or plumb walls?

e molarity of the final solution

't change, but throughout the night the height of the mattress is decreasing. The rate at which it decreases varies over time: at the beginning it is just shrinking a tiny bit, but after a while it starts shrinking faster. If the height of the of the mattress follows the formula h=18-0.2x^2, where h is the height in inches and x is the time in hours, and the length of the mattress is always 74 inches, and the width of the air mattress is always 54 inches, please find the rate at which the VOLUME of the air mattress is changing after 2 hours. V ' = cubic inches per hour after 2 hours. (Round to one decimal place, but take a picture of your work and send it to me if you're worried your answer might be slightly off.)

6 cm wide, and 10 cm high with water to a depth of 4 cm. Toby totally submerges the toy soldier in the water. The height of the water with the submerged toy soldier is 6.6 cm. Which of the following is closest to the volume, in cubic centimeters, of the toy soldier?

lar mass -KMnO4 = 158 g/mol) used in titration of 100 mL raw-water sample diluted 1:20 was 9,2 mL. Calculate the orientative amount of Fe(III)-sulfate coagulant needed to be added to 600mL of water sample in a coagulation-flocculation experiment.

and pieces are discarded. When the cardboard is folded, it becomes a rectangular box with a lid. The pattern for the rectangular box with a lid is shaded in the figure. Four squares with side length x x and two rectangular regions are discarded from the cardboard. Which of the following statements is true? (The volume V V of a rectangular box is given by V=lwh V=lwh .)

the maximum vol- ume it can enclose using only ten square meters of material. Assum- ing no material is wasted in the process and that edges can be joined by butting them together (so no overlap is required), determine di- mensions of the box so that this maximum volume is achieved and the value of this volume.

such that when R is revolved about the line y=k, the resulting solid has the same volume as the solid resulting when R is rotated about the x-axis. Write an equation involving integral expressions that can be used to find the value of k, and then solve for k.

Suppose the volume of a cylinder is 402.12 ft3 and the height is twice the radius what is the radius of the cylinder. Determine the radius, rounded to the nearest whole foot. The radius is____ ft?

ol MGCI2, and 1 mol glucose. the synthetic cell's membrane has aquaporins but no other transport protein. calculate the osmolarity of ICF and the osmolarity of ECF. what will happen to this cell? why?

ol MGCI2, and 1 mol glucose. the synthetic cell's membrane has aquaporins but no other transport protein. calculate the osmolarity of ICF and the osmolarity of ECF. what will happen to this cell? why?

∘C is placed in the water. If the final temperature of the system is 21.40 ∘C , what is the mass of the steel bar? specific heat of water = 4.18 J/(g⋅∘C) specific heat of steel = 0.452 J/(g⋅∘C)

cific gravity) of 1.24. What is the molarity of this solution? Using this solution how would 1 L of 2N solution be made. 6 (5 points) H3BO3 is needed to neutralize 20 ML of a 2N solution of NaOH. How much of the acid should I put in 40 ML of the water to exactly neutralize this solution?   7 (6 points) Describe how to make the solutions below : 20% w/v Salt in water. 20% v/v alcohol in water 20% w/w NaCl in water. 8 (three points) I have 0.6 g/dl solution of NaOH. What is M? Whan is N? 9 (six points) There are 3000mL of 3M NaOH. How much of the following do I need to neutralize? (watch your M’s and N’s a) 3M H3PO4 b) 2M H2SO4 c) 1M HCL 10 (20 points) The following solutions of NaOH are mixed together 20ML of 3N, 40mL of 2N, 60mL of 1N, 80 mL of 4N, and 100mL of 5N. a) What is the volume and normality of the final solution? b) How much 4M sulfuric acid would I need to neutralize? c) How much stock solution of sulfuric acid with an assay of 77% and a specific gravity of 1.14 would I need? d) How many grams of HCl would I have to put in a 300mL solution of HCl in water to neutralize? 11 (3 points) How much 5N solution can I make with 98 grams of H3PO4 ? 12 (5 points) How much 5N solution of H3AsO4 can I make with 57 mL of stock solution that is 84% assay and 1.14 specific gravity? 13 (5 points) If we have a 4N solution of HCl that has 0.03645g of HCl in the solution, how many microliters of solution do we have? 14 (10 points) If we have 66mL of a solution of concentrated NaOH that has an assay of 88% and a specific gravity of 1.24, how much 3N H3AsO4 can be neutralized?   15 (ten points) If I have 17 mL of a 20% w/v solution of NaOH and I want to neutralize with H2SO4 that is available in a 4% w/v solution, how much of this solution will be required. 16 (ten points) a) I have an 12mL of Ba(Cl)2 that is 78% assay that contains 8 grams of Ba(Cl)2. What is the specific gravity? b) How many Moles of Ba(Cl)2 are there? c) If I have 80 grams of NaOH in a liter of solution that is of an unknown specific gravity, can I calculate molarity and what is it? d) What is the difference between molarity and normality? e) I have 77 ml of 77% salt in water. How much 11% can I make?

at is, determine the radius and the height) that would maximize the volume of the cylinder. State your final answer accurate to 1 decimal place

combine volume pack A and volume pack B. Each pound of volume pack A costs $2.50 and contains 4 units of carbohydrate, 3 units of protein, and 5 units of fat. Each pound of volume pack B cost $1.50 and contains 3 units of carbohydrate, 4 units of protein, and 1 unit of fat. if minimum monthly requirements are 60 units of carbohydrates, 52 units of protein, and 42 units of fat, how many pounds of each food pack will the dietitian use to minimize costs?

combine volume pack A and volume pack B. Each pound of volume pack A costs $2.50 and contains 4 units of carbohydrate, 3 units of protein, and 5 units of fat. Each pound of volume pack B cost $1.50 and contains 3 units of carbohydrate, 4 units of protein, and 1 unit of fat. if minimum monthly requirements are 60 units of carbohydrates, 52 units of protein, and 42 units of fat, how many pounds of each food pack will the dietitian use to minimize costs?

ion of 129.1 cm cubed. Use the given standard deviation and the range rule of thumb to identify the limits separating values that are significantly low or significantly high. For such​ data, would a brain volume of 1373.5 cm cubed be significantly​ high? 1. Significantly low values are ____ cm cubed or lower. 2. Significantly high values are _________ cm cubed or higher. 3.

33.8 ∘C. Part A How much heat did the ring absorb? (density of gold =19.3 g/cm3)

ches are used to make snow globes.The spheres are tightly packed,as shown below.15 by 15 in.What is the volume of the empty space left in the box,in cubic inches?Round your answer to the nearest tenth of a cubic inch.

on, the water in the reservoir is decreasing at the rat of 5/2t gallons per hour at time t. when will the reservoir be empty if the initial water volume was 100,000 gallons? having a hard time really understanding this question, and working through it...