osmotic pressure chemistry

63,268 results, page 17

Chemistry

To what temperature in K must a variable volume container of helium gas be cooled to obtain a final volume of 0.182 L? The initial volume and temperature are 2.34 L and 314 K, respectively. The pressure and number of moles are fixed. You're supposed to us V1/T1=V2/T2, and I ...

chemistry

Hi, I really need help with my lab report because Im completely stuck. Its about the Ideal Gas behaviour. I am given the mass of Nano2 (0.5044g) the temperature of n2 gas (21.2 C) the temperature of water (21.9 C) the volume of n2 (186.1 ml) and the barometric pressure (753.06...

chemistry

A certain amount of chlorine gas was placed inside a cylinder with a movable piston at one end. The initial volume was 3.00 and the initial pressure of chlorine was 1.75 . The piston was pushed down to change the volume to 1.00 . Calculate the final pressure of the gas if the ...

Chemistry

Under an O2(g) pressure of 1.00 atm , 28.31mL of O2 (g) dissolves in 1.00L H2O at 298K. What will be the molarity of O2 in the saturated solution at 298K when the pressure is 3.86atm ? (Assume that the solution volume remains at 1.00L .) I used PV=nRT and found moles of solute...

Chemistry

Under an O2(g) pressure of 1.00 atm , 28.31mL of O2 (g) dissolves in 1.00L H2O at 298K. What will be the molarity of O2 in the saturated solution at 298K when the pressure is 3.86atm ? (Assume that the solution volume remains at 1.00L .) I used PV=nRT and found moles of solute...

Chemistry

A container is filled with CO2(g) and heated to 1000K. The gas pressure at this temperature is 0.50 atm. Graphite (C) is then added to the container and some of the CO2 is converted to CO according to the reaction below. The final equilibrium total gas pressure in the flask is...

Chemistry

Your space ship has docked at a space station above Mars. The temperature inside the space station is 24oC at a pressure of 745mmHg. A balloon with a volume of 425mL drifts into the airlock where the temperature is -95oC and the pressure is 0.115 atm. What is the new volume of...

Chemistry

Calculate the percent purity of a sample of zinc metal if 325 mL of hydrogen gas is collected by water displacement at a temperature of 22.0 C and an atmospheric pressure of 745.0 mm Hg when 1.12 g of the sample is reacted with excess HCl: Zn + 2 HCl = H2 + ZnCl2. The vapor ...

physics

The pressure in a constant-volume gas thermometer is 0.700atm at 100 deg. Celsius and 0.512atm at 0 deg. Celsius. a) What is the temperature when the pressure is 0.0550atm? b)What is the pressure at 500 deg. Celsius?

Chemistry 111

A gas occupies a volume of 256mL at a pressure of 250torr at 32 degrees Celsius. Calculate the pressure (in atmosphere)if the volume is reduced to 156mL and the temp is increased to 62 degrees Celsius. I really need the formula that I would be using. I am confused because ...

Chemistry

Given that the vapor pressure of water is 17.54 Torr at 20 °C, calculate the vapor-pressure lowering of aqueous solutions that are 1.90 m in (a) sucrose, C12H22O11, and (b) aluminum chloride. Assume 100% dissociation for electrolytes. I got .5799 Torr for sucrose, but I can't...

physical science

Helium has the lowest boiling point of the elements. The slightest change in temp can cause it to vaporize and expand. To prevent pressure explosions, a line from the tank has a "burst disk" in case a of sudden pressure increse. then the diaphragm would rupture and release the...

science

Helium has the lowest boiling point of the elements. The slightest change in temp can cause it to vaporize and expand. To prevent pressure explosions, a line from the tank has a "burst disk" in case a of sudden pressure increse. then the diaphragm would rupture and release the...

college chemistry!! need help now!!

An adult takes about 15 breaths per minute, with each breath having a volume of 500mL. if the air that is inhaled is "dry", but the exhaled air at 1 atm pressure is saturated with water vapor at 37 degree C(body temp), what mass of water is lost from the body in 1hr? The vapor...

Science

1. What is molarity of products? I can't decide if it's a. The concentration of the reactants measured in mol/L of solution or b. The concentration of the products measured in mol/L of solution 4. How does pressure relate to reaction rates? I'm stuck between a. Pressure is ...

Science

1. What is molarity of products? I can't decide if it's a. The concentration of the reactants measured in mol/L of solution or b. The concentration of the products measured in mol/L of solution 4. How does pressure relate to reaction rates? I'm stuck between a. Pressure is ...

Physics - force and pressure

A force of 2000N acts on an area of 4m^2, what is the pressure? What would be the pressure if the same force acted on half the area?

Damon or DrBob please help..chemistry/physics

Question: 0.37 litre of an ideal monatomic gas (Cv,m = 3R/2) initially at 51 °C and 36 atm pressure undergo an expansion against a constant external pressure of 1.06 atm, and do 2.3 kJ of work. The final pressure of the gas is 1.06 atm. Calculate the change in enthalpy, Δ...

Chemistry

A mixture of Nitrogen and Argon gases in a balloon exerted a pressure of 2.55 atm. Given that there were 1.0 g nitrogen gas and 3.2 g argon gas in the balloon, calculate the partial pressure of argon gas.

chemistry

At 25°C the vapour pressure of pure pentane is 511 torr and that of hexane is 150. torr. What is the mole fraction of pentane in a pentane-hexane solution that has a vapour pressure of 333 torr at 25°C?

science-chemistry

please anwser soon, a rigid 4.10L flask contains a mixture of 1.25 moles of H2, 0.250 mole of O2, and sufficient Ar so that the partial pressure of Ar in the flask is 1.00 atm. The temperature is 63.5 degrees C A) Calculate the total pressure in the flask B) calculate the mole...

Chemistry

One reaction of iron with hydrochloric acid is represented by the following thermochemical equation. Fe(s) + 2HCl(aq) ? FeCl2(aq) + H2(g); (Delta)H°= –87.9 kJ How much heat is liberated at constant pressure if 0.215 g of iron reacts with 40.4 mL of 0.579 M HCl? How much ...

chemistry

I wonder how to calculate the Kp if the question gives us the total pressure and no of mol of reactant. Without giving the mol of product how can i calculate the Kp. Can anybody help me what to do to calculate the Kp. Here is the question im unable to answer. Mol of CO and Cl ...

chemistry

Ethanol has an enthalpy of evaporation of 38.6kJ/mol, and a normal boiling point of 78.4oC. What is the vapor pressure of ethanol at 15oC? Hint: the normal boiling point is when the vapor pressure reaches 1 atm. Use, . Pay attention to use right units

Chemistry

Some hydrogen gas is collected over water at 20.0 Cel. and the levels inside the container is the same. The partial pressure of hydrogen is 742.5 torr. What is the barometric pressure as the time the gas was collected. My answer is 742.5 torr = 17.5 torr = 760 torr. Am I ...

Chemistry

The vapor pressure of chloroform is 173.11 mm Hg at 25 degrees celsius. A nonvolatile, nonelectrolyte that dissolves in chloroform is aspirin. Calculate the vapor pressure of the solution at 25 degrees celsius when 6.243g of aspirin (180.1g/mol) are dissolved in 244.5g of ...

Chemistry

What volume of nitrogen gas can be produced from he decomposition of 37.6 L of ammonia with both gases measured at 725 degree celsius and 5.05 pressure? In the reaction in 71 what total volume of gas at 667 celsius and 11.3 atm can be produced by the decomposition at 1.19 X 10...

Physical Science

1. What is molarity of products? I can't decide if it's a. The concentration of the reactants measured in mol/L of solution or b. The concentration of the products measured in mol/L of solution 4. How does pressure relate to reaction rates? I'm stuck between a. Pressure is ...

Physical Science

1. What is molarity of products? I can't decide if it's a. The concentration of the reactants measured in mol/L of solution or b. The concentration of the products measured in mol/L of solution 4. How does pressure relate to reaction rates? I'm stuck between a. Pressure is ...

Science

A 25 l partially filled weather balloon has a volume of 11 L at sea level where the pressure is 1 atm. It rises to an altitude of 6.096km (20,000 feet) where the pressure is only .48 atm. What is the resulting volume? At what pressure would it burst? Use the internet to find ...

physics

The vertical surface of a reservoir dam that is in contact with the water is 200 m wide and 14 m high. The air pressure is one atmosphere. Find the magnitude of the total force acting on this surface in a completely filled reservoir. (Hint: The pressure varies linearly with ...

Chemistry

Calculate the partial pressure of monatomic hydrogen in hydrogen gas at 2000 K and 1 atm pressure. Given: (i) For ½ H2 ï‚® H, Ho298=217,990 J; So298=49.35 J/K. (ii) Assume that the heat capacity of monatomic gas to be 3/2R (iii)The heat capacity of H2 assume...

Chemistry

a) Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 degrees Celcius, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 13.8 g of biphenyl in 32 g of benzene? b) Express...

Chem

Hello! A 22.0 L cylinder containing helium gas at a pressure of 28.1 atm is used to fill a weather balloon in order to lift equipment into the stratosphere. What is the final pressure (in atm) in the cylinder after a 101 L balloon is filled to a pressure of 1.23 atm. I found ...

biology help plz?????????????????

Please tell me which one is TRUE or FALSE for the statements below: 1. During the cardiac cycle the pressure in the left ventricle and right ventricle are approximately equal. 2. During isovolumetric contraction the left ventricular pressure continues to increase and ...

chemistry

I was having trouble with this problem. initial pressure for the compounds involved in the reaction displayed were determined to be P(CO(g)) = 0.5794 atm, P(H2O(g)) = 0.5662 atm, P(CO2(g)) = 0.7950 atm, P(H2(g)) = 0.2754 atm. Calculate the value of the equilibrium constant (Kp...

Chemistry

A solution is made by mixing 42.0 mL of ethanol, C2H6O, and 58.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 C in torr? Values at 20C ethanol density: 0.789 g/mL & vapor pressure (torr): 43.9 torr water: denisty: 0.998 g/mL & 17.5 ...

Chemistry

A mixture containing 0.5 mol of H2 (g) and 0.5 mol of I2 (g) was introduced into a 10L container at a temperature of 448 C. At this temperature the equilibrium constant Kp is 50. i. What is the total pressure in the container before the reaction starts and at equilibrium. ii. ...

Chemistry

A mixture containing 0.5 mol of H2 (g) and 0.5 mol of I2 (g) was introduced into a 10L container at a temperature of 448 C. At this temperature the equilibrium constant Kp is 50. i. What is the total pressure in the container before the reaction starts and at equilibrium. ii. ...

Chemistry

1. Reactions follow the law of conservation mass.- T? 3. In a chemical equation, the material to the left of the arrow equals the material on the right.- T 8. In a single replacement reaction, sodium (Na) doesn't replace hydrogen.- F? 16. Increased pressure acting on a gas at ...

Ap Chemistry

at 25 degrees Cliquid A has a vapor pressure of 100.0 torr, while liquid B has a vapor pressure of 200.0 torr. The heat of vaporization of liquid A is 32.0 kJ/mol and that of liquid b is 18.0 kJ/mol. At what celsius temperature will A and B have the same temperature. I haven't...

Principles of Chemistry

A certain amount of chlorine gas was placed inside a cylinder with a movable piston at one end. The initial volume was 3.00 L and the initial pressure of chlorine was 1.30atm . The piston was pushed down to change the volume to 1.00 L. Calculate the final pressure of the gas ...

Chemistry

A sample of H2 is collected over water such that the combined hydrogen–water vapor sample is held at a pressure of 1 standard atmosphere. What is the partial pressure of the H2 if that of the water vapor is 2.5 kPa? A. 103.8 kPa B. 98.8 kPa C. 2.5 kPa D. 101.3 kPa B or C???

Chemistry Help PLEASE!!

I don't know how to do this question, I understand we have to use ICE but I keep getting the wrong answer when I solve for x, it's just not working for me. Consider the following reaction: A(g) -> 2B (g) Find the equilibrium partial pressures of A and B for each of the ...

Physics

Assuming the fluid has a density of 1.00 (g/cm^) at what height h should the bottle be placed so the liquid pressure is 38mm-Hg ? B.At what height h should the bottle be placed so the liquid pressure is 460mm-H_2O ? C.If the blood pressure is 18 {mm-Hg} above atmospheric ...

Chemistry

An empty aerosol-spray can at room temperature (20 ◦C) is thrown into an incinerator where the temperature reaches 458◦C. If the gas inside the empty container was initially at a pressure of 1 atm, what pressure did it reach inside the incinerator? Assume the gas was at ...

Chemistry

If 20.0 g of N2 has a volume of 4.00 L and a pressure of 6.0 atm, what is its temperature?

Chemistry

What unit is barometric pressure measured in?

Chemistry

Explain what causes pressure in a container.

chemistry

convert a pressure of 1.75 atm to kpa

chemistry

convert a pressure of 1.75 atm to kpa

chemistry

which element is liquid @ 25.0c and 1 atmosphere pressure?

chemistry

What can cause high pressure inside a reactor?

Chemistry

define pressure how many mm Hg are in 875.1kPa

Chemistry

Kg/m^2 is the unit of pressure how i prove it. Please help me.

biology

3. A cylinder and an airtight piston are used in the following experiment. The piston is pushed up and down in the cylinder and the resulting pressure of the air inside the cylinder is measured with a pressure gauge. The results of the experiment are recorded in the following ...

physical chemistry

A solution is prepared by adding 1g of sugar mannitol (MW 182.2g/g-mole) in 100g of water at 20◦C. (a) Assuming that mannitol and water form an ideal solution, what is the equilibrium vapor pressure of solution? The vapor pressure of pure water is 17.54mmHg at 20◦C

chemistry help!!

a gaseous mixture contains 1 mol of O2 and 2 mol of CO2, exerting a total pressure of 1.5 atm. what amount of CH4 must be added to the mixture in order to increase the total pressure to 2 atm. (assume no gas escapes and there is no change in total volume) the answer is 1 mol ...

chemistry

A closed vessel with volume of 226.9mL initially contained air at 680.8mmHg at 16.5 degrees celcius. A sample of an organic liquid of mass 0.113g was injected into the flask which was then warmed to 124.9 degrees celcus causing all the organic liquid to vaporise. The final ...

chemistry

a barometer is read directly in torrs or mm Hg. an open-end manometer has a closed arm liquid height of 48.4 mm and an open arm liquid height of 62.6 mm. if the air pressure is 758.0 torrs, what is the pressure of the gas connected to the manometer?

Chemistry

A weather balloon is inflated to a volume of 25.6L at a pressure of 736mmHg and a temperature of 31.9∘C. The balloon rises in the atmosphere to an altitude, where the pressure is 365mmHg and the temperature is -15.6∘C. Assuming the balloon can freely expand, ...

Physics

Suppose you were to swim into an underwater cave while keeping the same depth below the surface of the water. Would the water pressure around you increase, decrease, or remain the same? a. The pressure would increase. b. The pressure would decrease. c. The pressure would ...

Chemistry please help :)

A 1.10 sample of dry ice is added to a 745 mL flask containing nitrogen gas at a temperature of 25.0 degrees C and a pressure of 735 mm Hg . The dry ice is allowed to sublime (convert from solid to gas) and the mixture is allowed to return to 25.0 degrees C. What is the total ...

Chemistry

hydrogen gas is collected over water at a total pressure of 744 mm Hg at 20.0 C. If the volume of the wet hydrogen is 495 mL, what will the dry volume be at standard conditions? I know that you need to subtract the water vapor pressure from the total and I got 726.45 mmHg. (...

chemistry

An experiment was conducted in which many pieces of data were collected. Considering all of the data, the limiting number of significant figures in the experiment was 3 significant figures. One of the values needed in these calculations was the barometric pressure. It was ...

Chemistry

Use the van der Waals equation of state to calculate the pressure of 3.60 mol of NH3 at 489 K in a 4.50-L vessel. Van der Waals constants can be found here. P= Use the ideal gas equation to calculate the pressure under the same conditions. P= I have tried absolutely everything...

chemistry

in the laboratory, concentrated hydrogen chloride acid reacted with aluminium. hydrogen gas evolved was collected over water at 25 degree celcius and had a volume of 355 centimetre cube at a total pressure of 750mmHg.(the vapour pressure of water at 25 degree celcius equal to ...

Chem 2

calculate the vapor pressure of a solution made by dissolving 61.7g (molar mass= 60.06g/mol) of Urea in 212ml of water at 35C. what is the vapor pressure lowering? the vapor pressure of water at 35c =31.82 mmHg

Chemistry

Please help me out... The pressure of a container of fluorine gas with a volume of 1.5L is 678mmHg at 55.0*C. a. If the volume of the fluorine gas increases to 5.0L, what would be the pressure of the gas in atm? The amount and tempature of gas are consistant. b.How many grams ...

Chemistry

Carbon monoxide and molecular oxygen react to form carbon dioxide. A 49.0 L reactor at 200°C is charged with 1.14 atm of CO. The gas is then pressurized with O2 to give a total pressure of 3.54 atm. The reactor is sealed, heated to 350°C to drive the reaction to completion, ...

Intro Chemistry

Given: C2H2(g) +2HF(g) -> C2H4F2(g) Find: pressure in a 10.0L flask when the reaction is complete When 1.0 mol of C2H2 and 5.0 mol pf HF are reacted in a 10.0 L flask, what will be the pressure in the flask at 0 degrees C when the reaction is complete?

Chemistry

What is the pressure (in atmospheres) of the gas inside the container connected to an open-end, mercury-filled manometer as shown in the picture? The atmospheric pressure is 0.95atm. l----l | (G) l | l - --- l Hg l Hg *18cm - - --- Hg Hg HgHgHgHg what process do I use to solve...

Chemistry

Answer check: I got 1.66 x 10^3 g O2 A steel cylinder contains 98.0 moles of oxygen gas at a temperature of 38 degrees C and a pressure of 740 torr. After some of the oxygen gas has been used, the pressure is reduced to 332 toor at a temperature of 24 degrees C. What mass of ...

them

How do intermolecular forces determine the vapor pressure of a liquid? A. A nonpolar compound has a low vapor pressure because of London dispersion forces. B. A compound that can form hydrogen bonds has a low vapor pressure. C. A polar compound has a high vapor pressure ...

Chemistry

A scuba tank contains heliox, a special breathing gas composed of 5.0% oxygen and the remainder helium, for use by divers that spend extended amounts of time at depth underwater. The volume of the tank is 20 L and the pressure within it is 1500 lb/in2. Calculate the mass in ...

t

A 15.7-L tank is filled with H2 to a pressure of 237 atm. How many balloons (each 2.00 L) can be inflated to a pressure of 1.00 atm from the tank? Assume that there is no temperature change and that the tank cannot be emptied below 1.00 atm pressure.

general chemistry

Calculate the molar mass that would be obtained from the actual experimental data under the following conditions. The unknown is methyl propyl ether (CH3OC3H7) which has a vapor pressure of 375.2 torr at room temperature, 20C. The volume of the flask is 135 ml, the temperature...

Chemistry

Which substance has the higher entropy? a.) a sample of pure silicon (to be used in a computer chip)or a piece of silicon containing a trace of another element such as boron or phosphorus b.) O2(g) at 0 degrees C or O2(g) at -50 degrees C c.) I2(s) or I2(g), both at room ...

Chemistry

1. Calculate the number of molecules in a deep breath of air whose volume is 2.15 L at body temperature, 36 degrees Celsius, and a pressure of 740 torr. 2.A fixed quantity of gas at 24 degrees Celsius exhibits a pressure of 740 torr and occupies a volume of 4.42 L. a)Use Boyle...

Attn: DrBob222

A .326L container holds 0.146g of Ne and an unknown amount of Ar at 30C and the total pressure is 627 mmHg. Calculate the moles of Ar present? (I have calculated temp 308K, pressure is 0.825 atm and moles of Ne are .007) Chem - DrBob222, Wednesday, March 3, 2010 at 3:25pm T is...

chem

The total pressure in a flask containing air and ethanol at 257C is 845 mm Hg. If the pressure of the air in the flask is 762 mm Hg, the vapor pressure of ethanol is ? mm Hg.

(1-16)Chemistry - Science

Consider the reaction: SO2 (g) + NO2 (g) ==> SO3 (g) + NO (g) At T = 1000 K, where the reaction is exothermic with an equilibrium constant K = 9.00 The reaction vessel is charged initially with all four gases, each at a pressure of 0.5 atm. After equilibrium is achieved, ...

chemistry

for the vaporization of water at 1.00 atm, delta H=43.54 kj/mol at 298 K and delta H= 40.68 kj/mol at 373 K. the constant-pressure heat capacity of liquid water is 75.3 J/molK. calculate the constant pressure heat capacity for H2O(g).

chemistry

A 10.0L flask contains 3.0atm of ethane and 8.0 atm of oxygen at 28 degrees C. The contents of the gas are reacted and allowed to return to 28 degrees C. What is the pressure of the flask? Using n=RT/PV I converted atm to moles and then used the balanced equation to find that ...

CHEMISTRY

Dr BOB can you explain this to me. I am so struggling with this subject. NO one has helped me on this one yet can anyone help me? during a typical breathing cycle the CO2 concentration in the expired air rises to a peak of 4.6% by volume. Calculate the partial pressure of the ...

pre calc

the volume of a gas varies inversely as its pressure and directly as its temperature. A certian gas occupies a volume of 2.3L at a temp of 380 K and a pressure of 20 N/cm^2 find the volume when the temp is 342 K and the pressure is 10 N/cm^2

science

A 2.5L flask contains 0.25mol each of so2 and n2 gas at 27 ° c. calculate the partial pressure exerted by each gas and also the total pressure exerted by each gas and the total pressure. name the law on which it is based

Algebra

Boyle's Law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 5 liters, the pressure is 158 kPa (kilopascals). What is the volume when the pressure is 395 kPa?

Chemistry

A 1.50mol sample of helium at a certain temperature and pressure has a volume of 31.4L. A second sample of helium at the same temp and pressure has a volume of 42.2L. How many moles of Helium are in the second sample?

physics

A 1.80 mol sample of an ideal diatomic gas at a pressure of 1.20 atm and temperature of 410 K undergoes a process in which its pressure increases linearly with temperature. The final temperature and pressure are 710 K and 1.83 atm. (Note: Volume does not stay constant). What ...

physic

you are designing a diving bell to withstand the pressure of sea water at a depth of 250m. a)what is the quage pressure at the depth(you can ignor the small changes in the density of the water with depth.) b)at the 250m depth, what is the net force due to the water outside and...

Chemistry

Consider a cylinder containing 2 mol of an ideal gas at an initial temperature of 25 C. The cylinder is fitted with a piston on which a weight is placed, subjecting the gas to a constant pressure of 2.66 atm. The cylidner is then wrapped with a heater, from which 1.50 kJ of ...

Chemistry

An air bubble has a volume of 0.500 L at 26 Celsius. If the pressure does not change, what is the volume, in liters, at -14 Celsius? If the pressure does not change, what is the volume, in liters, at 600 k?

Chemistry

15.0 moles of gas are in a 6.00L tank at 298.15K. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300 L^2*atm/mol^2 and b=0.0430 L/mol. I found the idea gas pressure to be 61.2 atm by...

chemistry

A 79.9-L sample of a gaseous hydrocarbon, measured at 1.00 atm pressure and 25.0°C, is burned in excess oxygen, liberating 4.24 × 10^3 kJ of heat at constant pressure. What is the identity of the hydrocarbon? (R = 0.0821 L · atm/(K · mol)) Substance H°f (kJ/mol) CO2(g...

Science

you reacted magnesium with a hydrochloric acid aqueous solution and hydrogen gas was produced. Let's say that you collected the gas given off by the reaction and measured it's pressure as 102.1 kPa. If the vapor pressure of water is 16.2 kPa at this temperature, then what is ...

Chemistry

The normal boiling point of a liquid is A. the temperature at which all three phases are in equilibrium. B. the only temperature at which there can be equilibrium between the liquid and gas states. C. the temperature at which the vapor pressure equals 760 mmHg. D. the ...

Physics

How much higher must your blood pressure get to compensate for a 5% narrowing in your blood vessels? Using Bernoulli's fluid laws can someone explain this to me "The pressure difference across your blood vessels is essentially equal to your blood pressure" Po = ½ ρ (v1...

chemistry

A gas is confined to a container with a massless piston at the top. (Part C figure) A massless wire is attached to the piston. When an external pressure of 2.00 atm is applied to the wire, the gas compresses from 4.90 to 2.45 L. When the external pressure is increased to 2....

science

This year for my science fair project I will be testing to see if music affects a person's blood pressure. I will have a participant get relaxed (for 5 minutes). After he/she is relaxed, I will take his/her blood pressure with a digital sphygmomanometer (instrument used to ...

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