Search: A box of unknown mass

An unknown mass of each of the following substances, initially at 23.0C, absorbs 1910 J of heat. The... An unknown mass of a certain solid, initially at 60⁰C, is heated at a uniform at a uniform rate. Af... Mass of an unknown gas of 50 mL volume at 25 degrees C. and 740 mm of Hg pressure was 0.056 g. The m... Question: An unknown mass of (NH4)2CO3 is mixed with 4g of NaOH and dissolved in 100cm3 of water... The molar mass of an unknown salt is 63.5. If 4.81 g is added to 81.1 mL of water the temperature ch... the molar mass of an unknown gas was measured by an effusion experiment. it took 63s for te gas to e... An unknown metal with a mass of 313 g has a heat capacity of 121 J/oC. What is the specific heat of... An unknown metal with a mass of 54.5 g required 777 J of energy in order to change its temperature... A box of unknown mass is sliding with an initial speed vi = 5.60 m/s across a horizontal frictionl... the formula mass of an unknown compound is 44.009 amu. What is its molar mass? An unknown metal has a mass of 4.67g. It is heated to 95.1 C and then placed in a calorimeter that c... An unknown mass of caco3 was added to an excess of 2mol/dm3 hcl. Calculate the total volume of co2... A cardboard box of unknown mass is sliding upon a mythical frictionless surface. The box has a velo... An object of an unknown mass is attached to an ideal spring with force constant 120 N/m and is found... A mass on a string of unknown length oscillates witha period of 6.0s What is the period if the mass... A sphere of unknown mass with a net charge, Q is released from rest in a uniform electric field, E.... An unknown mass is suspended by a string from one end of an uniform stick which has a mass of 120... A gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressur... Mass of unknown solution=25.671 Mass ethanol =8.243 Assuming that prior experiments have shown... An unknown substance has a mass of 53.9 g and occupies a volume of 35.4 mL. What is its density in g... with a cart of unknown mass, could you still determine whether its total energy is conserved? explai... An unknown metal with a mass of 260 g has a heat capacity of 100 J/oC. What is the specific heat of... An unknown substance has a mass of 16.3 g. The temperature of the substance increases by 20.1 degree... An unknown mass has an acceleration of 2 m/s2 to a 1 kg body.if the same force accelerate another bo... A body of unknown mass is attached to an ideal spring with force constant 113 N/m . It is found to v... A physics book of unknown mass is dropped 5.00 m. What speed does the book have just before it hits... A Physics book , mass unknown , is dropped from a table . its velocity just before hitting the groun... Unknown Acid: #2 Mass of Unknown solid acid transferred:0.414g Volume of volumetric flask: 100.0... A body of unknown mass is attached to an ideal spring with k=120 n/m. it is found to vibrate with a... If I am given that an unknown sample containing iron(II)ion is .949 g and it requires 31.28 ml of .0... : 1.0 L of an unknown gas was allowed to effuse through a small opening under constant pressure cond... 1.45 g of an unknown gas at 53 °C and 1.10 atm is stored in a 1.85-L flask. What is the density o... hen 9.3 g of an unknown non-electrolyte is dissolved in 50.0 g of benzene, the boiling point the boi... 2. When 0.354 g of an unknown nonelectrolyte compound was dissolved in 12.5 g of benzene a solution... 1. Consider a 1.00g unknown sample that contains 62.0% sodium carbonate and 38.0% sodium bicarbonate... You are looking at an unknown cell through a microscope. What can you infer about a cell that lacks... why is it that when an unknown carbonate of group one or two (inc H) reacting w/ HCl, the mole ratio... 4.05 g of an unknown gas at 73 °C and 1.00 atm is stored in a 2.25-L flask. If 48.3 g of an unknown gas occupies 10.0 L at 40 degrees celsius and 3.10 atm, what is the molar ma... An unknown gas is placed in a 1.500 L bulb at a pressure of 356 mm Hg and a temperature of 22.5 ∘C,... Someone gives you an unknown mineral. You can scratch it with quartz but not with feldspar. What is... When 100.0 g of an unknown nonelectrolyte is dissolved in 500.0 g of benzene, C6H6, the solution boi... You have an unknown with an observed melting point of 90-93°C. Is your unknown compound A with a rep... 2.05 g of an unknown gas at 45 °C and 1.00 atm is stored in a 1.15-L flask. What is the density o... 3.15 g of an unknown gas at 53 °C and 1.00 atm is stored in a 1.55-L flask. The gas has a density of... If 4.83 mL of an unknown gas effuses through a hole in a plate in the same time it takes 9.23 mL of... 1. Out of all the "8" unknown gases, which one is the most likely to depart from the ideal gas behav... If you were given an unknown solution, write the steps that would be needed to prove that a solution... We were given an unknown to identify using UV-VIS spec based on the wavelength of maximum absorbance... An unknown gas at 25.1 ∘C and 1.00 atm has a molar mass of 16.04 g/mol. Assuming ideal behavio... When 0.354 g of an unknown nonelectrolyte compound was dissolved in 12.5 g of benzene a solution was... Solve for the unknown. 1.) √y+√y+7=7 2.) √x+11=√x +1 a 20.94-g sample of an unknown metal is heated to 99.4 degrees Celsius in a hot water bath until the... To 15.50 mL of an unknown NaOH solution is added 17.00 mL of 0.460 M H2SO4 solution. The resulting m... An unknown compound contains only carbon, hydrogen, and oxygen. Combustion analysis of the compound... A 15.0 g sample of an unknown compound is dissolved in 100.0 g of benzene. The boiling point is ra... An unknown distribution has a mean of 80 and a standard deviation of 12. A sample size of 95 is draw... x represent the unknown value eight more than one-sixth of a number 10.00 mL of an unknown base solution is titrated with .100 M HCl solution. The pH versus the volume... You are given two unknown point charges, Q1 and Q2. At a point on the line joining them, one-third o... An unknown mixture containing KClO3 was added to an ignition tube weighting 41.960g, The tube and mi... Three unknown solutions were prepared by pipetting 15.00 mL of an unknown nickel solution into a 200... You are given an unknown solution that only contains one of the two listed cations. Describe a simp... An Unknown gas effuses at a rate that is 0.355 times the rate of oxygen gas effuses at the same tem... Three samples of an unknown acid are titrated with 0.4901 M NaOH. The average equivalent weight of t... i am calculating an unknown acid for both monoprotic and diprotic assumptions. I calculated the mono... Unknown causes of morbidity or mortality should be coded only when? Dissolve 1.5g of an unknown salt into 37g of water and find that the new vapor pressure at 75C is 27... What is the unknown dimension of 18=1/2(6)x? A 12 g sample of an unknown compound contains 3.489 g of sodium and 4.870 g of sulfur. The rest is... An unknown compound contains carbon, hydrogen, and oxygen. When burned, a 2.000 gram sample of this... 10.0 g of an unknown acid is titrated to the equivalent point using 65.0 ml of 0.150M KCH. Assuming... 0.7g of an unknown mixture of NaHCO3 and Na2CO3 is mixed with 3mL of 12M HCl.what is the mass of NaH... A chemist is given an unknown base. She finds that a 1.0461 M aqueous solution of this base has a pH... .100 KG of an unknown metal at 94°C is placed in 100 g of water at 10°C the final temperature of the... 5mL of a solution A (unknown concentration) was transferred into sic 25mL volumetric flask. The foll... you are given an unknown gaseous binary compound. when 10.0g of the compound isburned in excess oxyg... What is the unknown digit that makes the statement true? 2.48>2.4___1>2.463 A 1.065-g sample of an unknown substance is dissolved in 30.00 g of benzene; the freezing point of t... solve for the unknown: 6e^(-4t) = 2 Diffraction from an unknown cubic metal is observed to occur at the following value of θ when using... An unknown compound is known to contain 30.34% M and 60.56% O. What is it's empirical formular An earthquake of an unknown magnitude is 254 times stronger then an earthquake of magnitude of 2.4.... You have an unknown concentration of ammonia. When you add 15.0mL of a 0.400 M HCl solution to 50.0m... 0.82g of an unknown gass is at 30 degrees C in 3L container at a pressure of 15.9psi. What is the mo... how do I find an unknown? A 125.0 mg sample of an unknown, monoprotic acid was dissolved in 100.0 mL of distilled water and t... A 0.750 g sample of an unknown substance is dissolved in 20.0 g of benzene, C6H6. The freezing point... A 15.0 ml sample of an unknown HClO4 solution requires 50.3 ml if 0.101 M NaOH for complete neutrali... You have an unknown function that is monotone increasing for 1 < x < 5 and have the following info... A 0.446 g- sample of an unknown monoprotic acid was titrated with 0.105 M KOH. the molar mass is 120... An unknown compound contains only the three elements C,H, and O. A pure sample of the compound is an... I took 25 mL of an unknown weak acid and added it to 10 mL of NaOH solution. I measured the pH and g... An unknown gas has a molecular weight of 30.07 g/mol. What is the density of the gas at STP? A 1.325 g sample of an unknown vapor occupies 386 mL at 114 celsius and 946 mmHg. The simplest formu... If I had two unknown chemicals (in solid form) mixed together, how could I go about identifying the... A sample contains an unknown amount of tartaric acid, H2C4H4O6. If 0.3888 g of the sample requires... when 12.76mL of HCl of unknown concentration (but less than the base) are reacted with 15mL of 3.254... A 27.00 mL sample of an unknown H3PO4 solution is titrated with a 0.110 M NaOH solution. The equival... Consider titrating an unknown chloride sample with 0.10 +/- 0.01M AgNO3 and the following data: Ini...