How do scientists measure how much stuff is in a specified volume of a substance?

How do scientists measure how much stuff is in a specified volume of a substance?
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How much stuff is in a specified volume of a substance scientists use?

Description : How much stuff is in a specified volume of a substance scientists use?

Last Answer : What is the answer ?

For a given substance at a specified temperature, activity is __________ to fugacity. (A) Directly proportional (B) Inversely proportional (C) Equal (D) None of these

Description : For a given substance at a specified temperature, activity is __________ to fugacity. (A) Directly proportional (B) Inversely proportional (C) Equal (D) None of these

Last Answer : (A) Directly proportional

Generality is the measure of _____________ a) Ease with which the method can be adapted to different domains of application b) The average time required to construct the target knowledge structures from some specified initial structures c) A learning system to function with unreliable feedback and with a variety of training examples d) The overall power of the system

Description : Generality is the measure of _____________ a) Ease with which the method can be adapted to different domains of application b) The average time required to construct the target knowledge structures ... unreliable feedback and with a variety of training examples d) The overall power of the system

Last Answer : a) Ease with which the method can be adapted to different domains of application

Pick out the correct statement. (A) Chemical oxygen demand (COD) is a measure of chemically oxidisable organic matter present in water (B) COD is determined by oxidising the organic matter present in water with potassium dichromate in cone, sulphuric acid solution at boiling temperature for specified time (C) COD is related to BOD of a given waste in water but the relationship varies for different wastes. Typically COD of potable water may be 1-2 mg/litre (D) All (A), (B) and (C)

Description : Pick out the correct statement. (A) Chemical oxygen demand (COD) is a measure of chemically oxidisable organic matter present in water (B) COD is determined by oxidising the organic matter present in water with potassium dichromate ... of potable water may be 1-2 mg/litre (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Pick up the correct statement from the following: (A) Phase of a wave is expressed as a fraction of a period with respect to a reference (B) Phase is usually specified by angular measure with one period being 360° (C) The reference for finding the phase of a wave is taken from the previous passage through zero from the negative to the positive direction (D) All of these

Description : Pick up the correct statement from the following: (A) Phase of a wave is expressed as a fraction of a period with respect to a reference (B) Phase is usually specified by angular measure with ... from the previous passage through zero from the negative to the positive direction (D) All of these

Last Answer : Answer: Option D

Primary storage capacities are usually specified in what unit of measure?

Description : Primary storage capacities are usually specified in what unit of measure?

Last Answer : Number of bytes.

When would you measure the minimum preheat temperature? a) On completion of each pass b) Immediately prior to commencing the first pass and subsequent passes c) When the welding is complete d) Minimum preheat temperature measurement is only required if the heat input is lower than that specified in WPS

Description : When would you measure the minimum preheat temperature? a) On completion of each pass b) Immediately prior to commencing the first pass and subsequent passes c) When the welding is ... preheat temperature measurement is only required if the heat input is lower than that specified in WPS

Last Answer : b) Immediately prior to commencing the first pass and subsequent passes

Can scientists use the measure of density to tell if something will float. False True?

Description : Can scientists use the measure of density to tell if something will float. False True?

Last Answer : True.

A space time of 3 hours for a flow reactor means that (A) The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours (B) Three reactor volumes of feed can be processed every hour (C) It takes three hours to dump the entire volume of the reactor with feed (D) Conversion is cent per cent after three hours

Description : A space time of 3 hours for a flow reactor means that (A) The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours (B) Three reactor volumes of feed ... to dump the entire volume of the reactor with feed (D) Conversion is cent per cent after three hours

Last Answer : (A) The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours

Pick out the wrong statement pertaining to space velocity of flow reactors. (A) The unit of space velocity is (time) -1 (B) The space velocity of 3 hr -1 means that three reactor volumes of feed at specified conditions are being fed into the reactor every hour (C) The space velocity of 3 hr -1 means that one third reactor volume of feed at specified conditions are being fed into the reactor (D) None of these

Description : Pick out the wrong statement pertaining to space velocity of flow reactors. (A) The unit of space velocity is (time) -1 (B) The space velocity of 3 hr -1 means that three reactor volumes of ... one third reactor volume of feed at specified conditions are being fed into the reactor (D) None of these

Last Answer : (C) The space velocity of 3 hr -1 means that one third reactor volume of feed at specified conditions are being fed into the reactor

The number of vehicles moving in a specified direction on a roadway that pass a given point during specified unit of time, is called (A) Traffic volume (B) Traffic density (C) Basic capacity(D) Traffic capacity

Description : The number of vehicles moving in a specified direction on a roadway that pass a given point during specified unit of time, is called (A) Traffic volume (B) Traffic density (C) Basic capacity (D) Traffic capacity

Last Answer : Answer: Option A

A control volume refers to what?  a. A fixed region in space  b. A reversible process  c. an isolated system  d. a specified mass

Description : A control volume refers to what?  a. A fixed region in space  b. A reversible process  c. an isolated system  d. a specified mass

Last Answer : A fixed region in space

What is the stuff inside the electric kettle at the bottom, which looks like flakes of some hard substance?

Description : What is the stuff inside the electric kettle at the bottom, which looks like flakes of some hard substance?

Last Answer : Lime scales. Put in CLR to clean it. Or chuck away. It is from your water.

Isn't it really dangerous to build stuff from only one substance considering resonant frequenties?

Description : Isn't it really dangerous to build stuff from only one substance considering resonant frequenties?

Last Answer : The Parthenon would be standing to this day if it weren't for invaders.The Eiffel Tower -all steel.Castles of the world being made of stone still standing to this day. It seems different materials don ... As for Tesla's machine,no.Someone would have that by now and would be knocking down buildings.

What is a measure that determines the state of a substance?

Description : What is a measure that determines the state of a substance?

Last Answer : Generally speaking, the state of a substance at any giventemperature and pressure depends on the phase-transitioncharacteristics of the substance you're testing, like freezingpoint/melting point, vaporization / condensation point, andrecombination/ionization point.

The pH scale relates the measure of _______ of a chemical substance. a. ionization b. denaturation c. acidity d. buffering

Description : The pH scale relates the measure of _______ of a chemical substance. a. ionization b. denaturation c. acidity d. buffering

Last Answer : c. acidity

Fugacity is a measure of the (A) Escaping tendencies of the same substance in different phases of a system (B) Relative volatility of a mixture of two miscible liquids (C) Behaviour of ideal gases (D) None of these

Description : Fugacity is a measure of the (A) Escaping tendencies of the same substance in different phases of a system (B) Relative volatility of a mixture of two miscible liquids (C) Behaviour of ideal gases (D) None of these

Last Answer : (A) Escaping tendencies of the same substance in different phases of a system

Entropy, which is a measure of the disorder of a system, is: (A) Independent of pressure (B) Independent of temperature (C) Zero at absolute zero temperature for a perfect crystalline substance (D) All (A), (B) & (C)

Description : Entropy, which is a measure of the disorder of a system, is: (A) Independent of pressure (B) Independent of temperature (C) Zero at absolute zero temperature for a perfect crystalline substance (D) All (A), (B) & (C)

Last Answer : (C) Zero at absolute zero temperature for a perfect crystalline substance

Entropy is the measure of:  a. The internal energy of a gas  b. The heat capacity of a substance  c. Randomness or disorder  d. The change of enthalpy of a system

Description : Entropy is the measure of:  a. The internal energy of a gas  b. The heat capacity of a substance  c. Randomness or disorder  d. The change of enthalpy of a system

Last Answer : Randomness or disorder

_________ is a measure of the average kinetic energy per molecule in a substance.  a. movement  b. temperature  c. heat  d. mass

Description : _________ is a measure of the average kinetic energy per molecule in a substance.  a. movement  b. temperature  c. heat  d. mass

Last Answer : temperature

What refers to the measure of the disorder present in a given substance or system?  A. Enthalpy  B. Entropy  C. Heat capacity  D. Molar heat

Description : What refers to the measure of the disorder present in a given substance or system?  A. Enthalpy  B. Entropy  C. Heat capacity  D. Molar heat

Last Answer : Entropy

Which substance has specific mass volume ?

Last Answer : Fluids have a specific mass volume

What is the specific mass , size , volume , of any substance ?

Last Answer : Solid matter has a specific mass size volume

A liquid substance _______. A. has particles packed tightly together B. has definite volume C. has definite shape D. has particles arranged in a regular pattern?

Description : A liquid substance _______. A. has particles packed tightly together B. has definite volume C. has definite shape D. has particles arranged in a regular pattern?

Last Answer : has definite volume

When a gas or a liquid is subjected to an increased pressure, the substance contracts, the bulk strain is defined as A. final volume ⁄ original volume B. final pressure ⁄ original pressureC. change in volume ⁄ original volumeD. original volume ⁄ change in volume

Description : When a gas or a liquid is subjected to an increased pressure, the substance contracts, the bulk strain is defined as A. final volume ⁄ original volume B. final pressure ⁄ original pressure C. change in volume ⁄ original volume D. original volume ⁄ change in volume

Last Answer : change in volume ⁄ original volume

Solubility of a substance which dissolves with an increase in volume and liberation of heat will be favoured by the (A) Low pressure and high temperature (B) Low pressure and low temperature (C) High pressure and low temperature (D) High pressure and high temperature

Description : Solubility of a substance which dissolves with an increase in volume and liberation of heat will be favoured by the (A) Low pressure and high temperature (B) Low pressure and low temperature (C) High pressure and low temperature (D) High pressure and high temperature

Last Answer : (B) Low pressure and low temperature

The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCvln (T2/T1) is valid for (A) Reversible isothermal volume change (B) Heating of a substance (C) Cooling of a substance (D) Simultaneous heating and expansion of an ideal gas

Description : The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCvln (T2/T1) is valid for (A) Reversible isothermal volume change (B) Heating of a substance (C) Cooling of a substance (D) Simultaneous heating and expansion of an ideal gas

Last Answer : (D) Simultaneous heating and expansion of an ideal gas

Fluid is a substance which offers no resistance to change of (A) Pressure (B) Flow (C) Shape (D) Volume

Description : Fluid is a substance which offers no resistance to change of (A) Pressure (B) Flow (C) Shape (D) Volume

Last Answer : Answer: Option C

Sum of the internal energy of a substance and the product of pressure and volume.  a. Specific Heat  b. Specific Gravity  c. Isolated System  d. Enthalpy

Description : Sum of the internal energy of a substance and the product of pressure and volume.  a. Specific Heat  b. Specific Gravity  c. Isolated System  d. Enthalpy

Last Answer : Enthalpy

_____ is that property of a substance which remains constant if no heat enters or leaves the substance, while it does work or alters its volume, but which increases or diminishes should a small amount of heat enter or leave.  a. Entrophy  b. Enthalpy  c. Specific Heat  d. None of the above

Description : _____ is that property of a substance which remains constant if no heat enters or leaves the substance, while it does work or alters its volume, but which increases or diminishes should a small amount of heat enter or leave.  a. Entrophy  b. Enthalpy  c. Specific Heat  d. None of the above

Last Answer : Entrophy

Is the amount of a substance that contains Avogadro’s number of atoms/molecules.  a. mass  b. matter  c. gram-mole  d. volume

Description : Is the amount of a substance that contains Avogadro’s number of atoms/molecules.  a. mass  b. matter  c. gram-mole  d. volume

Last Answer : gram-mole

The change in physical size of a substance when its temperature changes.  a. intensive property  b. extensive property  c. volume expansion  d. thermal expansion

Description : The change in physical size of a substance when its temperature changes.  a. intensive property  b. extensive property  c. volume expansion  d. thermal expansion

Last Answer : thermal expansion

What is constant for a substance that is considered “incompressible”?  A. Specific volume of density  B. Pressure  C. Temperature  D. All of the above

Description : What is constant for a substance that is considered “incompressible”?  A. Specific volume of density  B. Pressure  C. Temperature  D. All of the above

Last Answer : Specific volume of density

The mass of one mole of a substance in grams is known as ______.  A. Molar weight  B. Molar mass  C. Molar volume  D. Molar constant

Description : The mass of one mole of a substance in grams is known as ______.  A. Molar weight  B. Molar mass  C. Molar volume  D. Molar constant

Last Answer : Molar mass

The “equation of state” refers to any equation that relates the ______ of the substance.  A. Pressure and temperature  B. Pressure, temperature and specific weight  C. Temperature and specific weight  D. Pressure, temperature and specific volume

Description : The “equation of state” refers to any equation that relates the ______ of the substance.  A. Pressure and temperature  B. Pressure, temperature and specific weight  C. Temperature and specific weight  D. Pressure, temperature and specific volume

Last Answer : Pressure, temperature and specific volume

Can one use geometry to measure the volume of something irregularly shaped?

Description : Can one use geometry to measure the volume of something irregularly shaped?

Last Answer : The most accurate way to measure it would be by the rules of displacement.

How to measure volume flow rate?

Description : How to measure volume flow rate?

Last Answer : answer:If it Classified as Confined Space you should a have it marked as such. You need to review OSHA requirements. You cannot prove natural ventilation when it is a confined space . Positive ... company that had three near misses in confined spaces. Dead people don't go home at night!

Where can I find an affordable instrument to measure sound volume?

Description : Where can I find an affordable instrument to measure sound volume?

Last Answer : answer:Just get videos with timestamps. Personally I would utilize a 20 oz coke bottle half full of gas capped with a rag and a match. Or invite me over when he pulls his gun he better be a better shot than I am.

how can you measure the volume of a piece of sugar by gaduated cylinder?

Description : how can you measure the volume of a piece of sugar by gaduated cylinder?

Last Answer : I don't now

Measurement of rate of oxygen utillsation by a unit volume of water over a period of time is to measure.:

Description : Measurement of rate of oxygen utillsation by a unit volume of water over a period of time is to measure.:

Last Answer : Measurement of rate of oxygen utillsation by a unit volume of water over a period of time ... C. Biosynthetic pathway D. Biological oxygen demand

What do you do to measure the volume of a basketball?

Description : What do you do to measure the volume of a basketball?

Last Answer : The volume formula is: 4/3 times pi times radius cubed

What do you do to measure the volume of a basketball?

Description : What do you do to measure the volume of a basketball?

Last Answer : The volume formula is: 4/3 times pi times radius cubed

How do we measure pitch and volume?

Description : How do we measure pitch and volume?

Last Answer : We measure pitch with frequency and volume with amplitude.

If you were to measure the mass and the volume of a material, what would the mass to volume ratio tell you about it?

Description : If you were to measure the mass and the volume of a material, what would the mass to volume ratio tell you about it?

Last Answer : Its density.

Which of the following statement(s) is/are true concerning the relationship between cardiac function and effective blood volume? a. A pulmonary capillary wedge pressure of 5–10 rules out fluid overload as a cause of pulmonary edema b. A shift to the right in the Frank-Starling curve is associated with compromised cardiac function c. Dilutional anemia may contribute to tachycardia even though blood volume and filling pressures are normal d. The sole purpose of a pulmonary artery catheter is to measure pulmonary artery pressure and cardiac output

Description : Which of the following statement(s) is/are true concerning the relationship between cardiac function and effective blood volume? a. A pulmonary capillary wedge pressure of 5-10 rules out ... sole purpose of a pulmonary artery catheter is to measure pulmonary artery pressure and cardiac output

Last Answer : Answer: b, c Although physical findings are often adequate to establish a diagnosis and institute management of cardiac failure, direct measurement of filling pressures of the right heart ( ... blood volume is normal, filling pressures are normal, and total body extracellular fluid is excessive

Which of the following statements are true of a patient with hyperglycemia and hyponatremia? A. The sodium concentration must be corrected by 5 mEq. per 100 mg. per 100 ml. elevation in blood glucose. B. With normal renal function, this patient is likely to be volume overloaded. C. Proper fluid therapy would be unlikely to include potassium administration. D. Insulin administration will increase the potassium content of cells. E. Early in treatment adequate urine output is a reliable measure of adequate volume resuscitation.

Description : Which of the following statements are true of a patient with hyperglycemia and hyponatremia? A. The sodium concentration must be corrected by 5 mEq. per 100 mg. per 100 ml. elevation in blood ... . E. Early in treatment adequate urine output is a reliable measure of adequate volume resuscitation.

Last Answer : Answer: D DISCUSSION: Each 100-mg. per 100 ml. elevation in blood glucose causes a fall in serum sodium concentration of approximately 2 mEq. per liter. Excess serum glucose ... correction of the patient's associated acidosis produce movement of potassium ions into the intracellular compartment

Newton is used to measure ______. (1) Speed (2) Volume (3) Force (4) Area

Description : Newton is used to measure ______. (1) Speed (2) Volume (3) Force (4) Area

Last Answer : (3) Force Explanation: The newton (N) is the International System of Units (SI) derived unit of force. It is named after Isaac Newton in recognition of his work on classical mechanics, specifically Newton's second law of motion.

What volume of the chamber is required to measure absorption coefficient at 100 Hz? A. 125 m3 B. 50 m3 C. 150 m3 D. 352 m3

Description : What volume of the chamber is required to measure absorption coefficient at 100 Hz? A. 125 m3 B. 50 m3 C. 150 m3 D. 352 m3

Last Answer : D. 352 m3

______ used to measure speech volume A. Volume meter B. Audio frequency meter C. Volume unit meter D. Speech meter

Description : ______ used to measure speech volume A. Volume meter B. Audio frequency meter C. Volume unit meter D. Speech meter

Last Answer : C. Volume unit meter

Space velocity (A) Describes the extensive operating characteristics of a tubular flow reactor (B) Is the maximum feed rate per unit volume of reactor for a given conversion (C) Is a measure of the ease of the reaction (D) All (A), (B) and (C)

Description : Space velocity (A) Describes the extensive operating characteristics of a tubular flow reactor (B) Is the maximum feed rate per unit volume of reactor for a given conversion (C) Is a measure of the ease of the reaction (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)