4. The empirical formula of a compound can be determined from the molecular formula if the formula weight, or molecular weight, is known. 5. The empirical formula is the same multiple of the molecular formula. 6. Chemical equations use symbols instead of words to summarize chemical

Q: 3. Using the data from the Trials with Graduated Cylinder (Trial 1) divide the mass recorded by the…

A: Water is a molecular compound with the chemical formula of H2O. The presence of extended…

Q: A homogeneous mixture has  a/ not a uniform composition throughout  b/ a uniform composition…

A: Anything which have some mass and can occupy some space is known as the matter. Matter can be exists…

Q: Am I right? Calculate the mass percentage of water in the hydrate. Show the calculations. Sample 1…

A: mass percentage of water = Mas of waterMass of hydrate x 100

Q: Conversion : 1 kg steam = ..... kcal 1 kg steam = ..... cal 1 kg steam = ..... kw Please guide…

A:

Q: References Use the References to access important values if needed for this question. In the…

A: Energy (Q) = 55.7 J Mass (m) = 10 g T1 = 22.2°C T2 = 35.6°C

Q: Show ALL your steps and details in your calculations, by using GRASPS: Given, Required, Analysis,…

A:

Q: The mass of magnesium used in this experiment is critical to determining the moles of hydrogen gas…

A: The reaction considered is the formation of H2 gas by the reaction of Mg with HCl. The balanced…

Q: Js your the following function homogeneous 올 (x+y) annur. 21= or not? Prove

A:

Q: BaCl2(aq)+H3PO4(aq) --> Ba3(PO4)2(s) + HCl(aq) Express you answers as inetergers seperated by…

A: Given -> BaCl2(aq) + H3PO4(aq) <-----> Ba3(PO4)2(s) + HCl(aq)

Q: Indicate whether the following statement is true or false. It is not possible to carry-out the…

A: no we cant subtract both quantities as: pL is picolitre that is  Full name: picoliter Plural form:…

Q: 8. For Ausys to always be negative, what must be TRUE? A. q=w B. q> -w C. W> -q D -w>q

A: Answer: This question is based on first law of thermodynamics which gives us relation between ∆U, q…

Q: 3. An isolated system (a) Is a specified region where transfer of energy and/or mass take place (b)…

A: Here we are asked to choose about an isolated system from the given option.

Q: 1-27. Noble gases (Group 18 in the periodic table) have the follow- ing volume concentrations in dry…

A: The ideal gas law is given by: PV= nRT; where P= pressure, V= volume, n= no. of moles; R= universal…

Q: If molecules of hydrogen, nitrogen, oxygen and chlorine have the same kinetic energy which molecule…

A: average kinetic energy of molecule = (3/2)KT For all molecule at same temperature

Q: Discuss the difference between theory and scientific law

A: Theory: The plausible explanation which is given for various kinds of phenomenon, event or behaviors…

Q: [References] Use the References to access important values if needed for this question. A model for…

A: We have to write balanced equation for the formation of given compounds

Q: A student doing the distillation performed in this experiment notices that, while the liquid in the…

A: As per the question asks that boiling temperature is 53 degree Celsius. Thus distillation occurs at…

Q: a) A 555.0 g sample of liquid water is exposed to the light emitted by a nitrogen laser. Assuming…

A:

Q: 6. What is theoretical density for Al (aluminium). Use the following information: A= 26.98 g/mol…

A: IntroductionThe theoretical density, also known as the calculated density or ideal density, refers…

Q: 9. How many moles of phosphorus pentachloride are needed to make 35 liters of water? 35 LHO 4 moles…

A: The number of moles of a subtance is calculated by the formula, n=mM Where, m is the given mass of…

Q: If the equation produces from data is y = 0.371lx - 1.050 and the absorbance for the unknown is…

A: The question is based on concept of Lambert beer's law. it  states that absorbance is directly…

Q: how long from the original starting time would it have taken to achieve a tempreture of 55 C with…

A: Given: Mass of resistor = 5 g Mass Calorimeter = 22.1 g Mass of calorimeter + water = 116.5  Mass of…

Q: It says change in H is incorrect.

A: Excess of HCl means NH3 is limitting reagent and hence moles of product depends only on moles of NH3…

Q: what's the difference between natural law and a theory?

A: The difference between the natural law and a theory with aspects to chemistry is explained in next…

Q: An atom of hellum has a radius e = 31. pm and an average speed in the gas phase at 25°C of 787.m/s.…

A: rHe = 31. pmAverage speed in gas phase = 787.m/s Temperature= 25°C = 298K Uncertainty in speed =…

Q: 11) The half-life of Aluminum-28 from your lab is 2.2414 minutes. If you start with 13 mg of the…

A: Radioactive decay is a first-order reaction.The integrated rate law for radioactive decay is given…

Q: 12) In class PET (Positron Emission Tomography - a method of medical cancer evaluation) was…

A: To solve this problem, we need to use the concept of radioactive decay to find out how much of the…

Q: HONE FUR OReviews Additional Problems / 53 94. To measure the density of a small statue, you…

A:

Q: Deductive reasoning is applied in forensic science, instead of inductive. This statement is true or…

A: The difference between inductive and deductive reasoning is that inductive reasoning focus at…

Q: Use the References to access important values if needed for this question. The compound…

A:

Q: n=? O PVIRT O PTIRV O TR/PV O PR/VT

A:

Q: Start with ?(?)=??. Reflect it horizontally, expand it horizontally by a factor of 0.018, expand it…

A: We will find final equation for the temperature of a can of soda placed into a refrigerator.

Q: d. KMnO H,C OH H,C e. OH -CH, KMno

A:

Q: The actual mass of a 144 Sm atom is 143.911995 amu. (Consult Appendix B for any needed reference…

A:

Q: Suppose a student measured the mass of a sample that has a known mass of 40.5809 g using an…

A:

Q: N2H4(1) --> NH3(g)+N2(g) Express your answers as inetegers seperated by commas

A:

Q: Identify the missing particle or atom in the following nuclear equation: 235U- 90, Sr + 38 92 + 2 n…

A: Nuclear reactions: A nuclear reaction is a process in which two nuclei, or a nucleus and an external…

Q: 1. Absolute zero is the temperature at which all particle motion O stops. O decreases. O increases.…

A:

Q: picture. Classify it with the given words. light producer / light reflector Moon: Cat: Flashlight:…

A:

Q: * 60% iPad 2:23 PM + openvellum.ecollege.com Search Textbook Solutions | Chegg.com 61%iPad2:20…

A: The conditions under which the process of crenation takes place are to be described.

Q: Gold has 79 electrons per atom and an atomic mass of 197 u. Part A What is the total charge of all…

A: Given  atomic mass of gold = 197 u = 197 g/mol = 0.197 kg/mol  1 atom of gold = 79 electrons  mass…

Q: Which of the following are enantiomers of each other? H H H A Br 114 B Br Br C H H Br D 11/ H

A: Enantiomers : enantiomers having opposite stereochemistry at chiral centers. Assign R,S nomenclature…

Q: Calculate the density of (101) of Ag

A: Silver(Ag) has a FCC lattice. The plane 101 is depicted in the figure below with respective axes.…

Q: True or False? Heat is a form of energy associated with particles of matter whereas temperature is a…

A: Heat is a form of energy associated with particles of matter whereas temperature is a measure of the…

Q: k=1.38x10^-23J/K, Avogadros number = 6.023×10*26, kT = 0.0259 eV (at T=300K) Determine the…

A: Given  Energy of state = E = Ef  + 0.04Temperature = 300 KProbabbility of state = To be determined…

Q: A 1.02 mol sample of hydrogen gas at a temperature of 13.0 °C is found to occupy a volume of 22.0…

A: Moles of Hydrogen gas = 1.02 moleTemperature of hydrogen gas = 13.0°C = (13.0 + 273.15) K = 286.15…