The pharmacist attempts to weigh 0.375 g o morphine sulfate on a balance of dubious accuracy. When checked on a highly accurate balance, the weight is found to be 0.400 g. Calculate the percentage of error in the first weighing.

Q: How do I find the scientific notation of 82,000,000 s if the number of signtificant figures is 4?

A: The number given is 82,000,000 s And number of significant figures required in final answer is 4.

Q: Which of the following is a chemical property of Sodium?A.melts at 60°CB.soft solid C.density of…

A: Chemical property is a characteristic of a compound that can be observed after it undergoes in a…

Q: A 13.6 mL sample of polystyrene used in a styrofoam cup weighs 0.222 g What is the density of…

A: Given,  Volume of polystyrene = 13.6 mL  Weight of the polystyrene = 0.222 g  Density of polystyrene…

Q: A cylindrical glass tube 12.7 cm in length is filled withmercury (density = 13.6 g/mL). The mass of…

A: Given, Length of cylindrical tube = 12.7 cm Density of mercury = 13.6 g/mL mass of mercury = 105.5 g…

Q: :Q3: (Material scale) - choose the correct answer Atomic-scale Nano-scale Micro-scale Macro-scale…

A: An object constitutes the mixture of substance is termed as material. These are categorized  based…

Q: A chemist tries to dissolve a solid ionic compound called "X" in water at 25°C. He adds 100 mL of…

A: Solution is a homogenous mixture of solute and solvent. Solute is the component present in lesser…

Q: Gold can be hammered into extremely thin sheets calledgold leaf. An architect wants to cover a 100…

A:

Q: Carry out each of the following calculations, paying special attention to significant figures,…

A: Significant figures are the number of digits in a value, often a measurement, that contribute to the…

Q: A concentration solution of hydrochloric acid has a concentration of 1.202 (± 0.005) M. If 14.00 (±…

A:

Q: Use the References to access important values if needed for A sample of volume 244 cm has a mass of…

A: Mass = 1.04 Kg = 1040 g Volume = 244 cm3 Density = ?

Q: b,PO, wi (aq) (s) (g)

A: Given compound is Rb3PO4 . Chemical name of  Rb3PO4  is Trirubidium phosphate .

Q: A 1.00 m long beam of stainless steel with a square 2.00 cm×2.00 cm cross section has a mass of 3.02…

A: The length is given as 1m and the cross sectional area is 2 cm x 2 cm. The mass is given as 3.02 kg,…

Q: 4. Given the schematic notation: Cu | Cu (0.0200 M) | Ag le

A: Cell notation  At anode : oxidation Cu (s)  ------> Cu2+ ( aq) + 2e-        E°( Cu2+/ Cu) = 0.34…

Q: Q3WThe density of a waste water was 84 lbm/ft' in a waste treatment pond of 5000 cm long and 1500 cm…

A: Given data :  Density = 84 lbm/ft3 = 84 *  0.45359 * (3.2808)3 = 1345.49 kg/m3 Long = 5000 cm = 50 m…

Q: A) O B) S C) Se D) Te E) Po

A: On going down the group, the atomic radius increases.

Q: Carbon

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: In order to find the density of a solution of unknown density, 10 mL of solution was drawn into a…

A: Density = mass / volume.

Q: A 25.00 grams sample of a metal is placed carefully in a graduated cylinder, and then benzene is…

A: Given : mass of metal = 25.00 g Mass of metal + benzene = 60.85 g Volume of metal + benzene = 50.00…

Q: The density of the organic compound benzene is 0.879 g/mL.Calculate the mass in grams of 1.00 qt of…

A: Given information,    Density of benzene is 0.879 g/mL.    Volume of benzene is 1.00 quart

Q: A standard sample of pooled human blood serum contains 42.0 g of albumin per liter.Laboratory X…

A: Precision is the reproducibility of measurements where accuracy is the closeness of measured value…

Q: 1 liter of paint costs 200.00 pesos can cover 13.33 square meters, exactly how much will it cost to…

A: We need to find total cost of paint.

Q: Express the answers to the following calculations inscientific notation:(a) 145.75 + (2.3 × 10−1)(b)…

A: Scientific Notation: It is a way of expressing number in the form of powers of 10 to specify the…

Q: m. How many times can you divide evenly a 893.4 cm long piece of copper wire until it is reduced to…

A: Given : The radius of copper atom = 1.3×10-10 To find : Number of evenly cuts or number of times.…

Q: HUIA (OH]= 1.1 x 10° M [H,O'] = 5.0 x 107 M Milk

A:

Q: Suppose that instead of using the cylindrical rod of Example 1-2 to prepare a 1.000 kg mass we were…

A: Given:Mass = 1.000 Kg = 1000.00 gDensity = 8.96 g/cm3

Q: The standard definition of a quart is equal to 947 mL. Calculate the percent error of a student's…

A: Given  Actual value of quart=947 mL The measured value of quart=938 mL Percent error has to be…

Q: A pheromone is a type of volatile compound produced by a variety of insect species for chemical…

A:

Q: To wire your stereo equipment, you need 325 centimeters (cm) of speaker wirethat sells for $0.15/ft.…

A: Convert centimetre into feet. 1 cm = 0.0328 foot325 cm = 325 × 0.0328 foot325 cm = 10.66 foot or…

Q: 1. XY,(aq) + T(s) –– > TX(s) + Y(s)

A: Given: A chemical reaction.  To find : Balanced chemical equation and type of reaction.  Solution :…

Q: 20. An object with a mass of 6.3 kg has a force of 7.1 newtons applied to it. What is the resulting…

A: The answers of the above questions are given in following steps.

Q: A piece of silver (Ag) metal weighing 1943 g is placed in a graduated cy reads 260.5 ml. From these…

A: Ans  Density = mass in gm/ volume in cm3 Given mass = 194.3g Volume = 260.5mL = 260.5 cm3 (1 mL =…

Q: A cylindrical glass tube of length 25.75 cm and radius 2 cm is filled with argon gas. The Empty tube…

A: Given: Length is 25.75 cm. Radius is 2 cm. Weight of empty tube is 186.25 g. Weight of tube with Ar…

Q: The density of a metal is calculated as follows. The weight of 57.4 grams is divided by the volume…

A: The mass per unit volume of a substance is known as the density of the substance. The density of a…

Q: 4. Given the density of Au is 19.3 g/cm3, determine the mass of gold in an ingot having a volume of…

A: See the solution given below of question 4 (There are multiple questions: Since you have posted…

Q: Which of the following statements is FALSE? O The mass percentage of calcium in calcium phosphate is…

A: Answer - The False statement is (e) and (a) The mass percentage of calcium in calcium phosphate is…

Q: In microbiology, dilutions are critical for getting a countable number of microbes to grow on a…

A: Initially, the volume of solution to be taken having colonies of 50×106 (M1) is 1 mL (V1). The final…

Q: Ben was tasked to prepare 10 paper tabs from a 20 mg tablet for neonatal patient X. However, the…

A: mean is the sum of all observation/number of observation   absolute deviation = numerical difference…

Q: The density of silver (Ag) is 10.49 g/cm^3 and that of Nickle (Ni) is 8.9 g/cm^3. A comparison of…

A: Answer is explained below.

Q: You’re attempting to calculate the density of a titanium alloy. The titanium alloy is in the shape…

A:

Q: Suppose the metallic paper clips (which contain iron) had been replaced by magnesium or nickel.…

A: Ferromagnetism It is a property of substance in which metals act as a permanent magnets. Also it…

Q: An aluminum cylinder is 10.0cm in length and has a radius of 0.25cm. If the mass of a single Al atom…

A: Length of aluminium cylinder = h = 10cm Radius = r = 0.25cm Mass of single Al atom = 4.48x10^-23 g…

Q: Kerosene is added to a graduated cylinder until the kerosene level is 20.73 mL, and the mass of the…

A:

Q: In determining the density of a rectangular wooden block, use the information in the table below and…

A: Concept introduction: Density of the substance is equal to the ratio of mass to volume. Formula:…

Q: The pharmacist weight 800 mg of a substance on a balance of dubious accuracy. When checked on a…

A: Percent error is defined as the ratio of absolute value (modulus) difference of true value and…

Q: an object weighing 16.9 g into an open vessel that is full of ethanol, so that a volume of ethanol…

A: Given: mass of object=16.9 gnew weight of vessel=10.6 g higherdensity of ethanol=0.789 g/cm3 To…

Q: please highlight the correct answer

A: The molarity relation is given by- M1: bacteria count cell per mL V1: Initial Volume M2: bacteria…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.