STARTING AMOUNT + X The state of Oregon has an entire area of 9.70 × 104 mi² . What is this area in square kilometers ? ADD FACTOR x( ) (1.609)² 9.70 x 104 0.6214 mi² 6.03 × 104 1.56 × 105 km² km (1)² 1 m² ANSWER 1.609 (0.6214)² 2.51 x 105 5280 mi m RESET 5 3.75 x 104

Q: A chemist prepares a solution of zinc oxalate (ZnC₂04) by measuring out 3.94 mg of zinc oxalate into…

A:

Q: A chemist prepares a solution of potassium iodide (KI) by weighing out 25.38 g of potassium iodide…

A: Mass of potassium Iodide = 25.38 g Volume of water = 100. mL The concentration is needed in the unit…

Q: A chemist prepares a solution of copper(II) sulfate (CuSO4) by weighing out 45.79 g of copper(II)…

A: To solve this problem we have to calculate the concentration of the solution .

Q: A chemist must dilute 78.3 mL of 9.91 mM aqueous calcium sulfate (CaSO4) solution until the…

A: For dilution, we can use the formula:Here, M1 = molarity of the original solutionV1 = volume of the…

Q: The concentration of mercury in a polluted lake is 0.33 micrograms per liter of water. What is the…

A: Given,Volume of the lake = 1.5 x 1012cm30.33 micrograms per liter of water

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: Covert  j/Mol into kj/Mol

Q: A student wanted to measure the density, in g/mL, of an unknown metal alloy. They had multiple sized…

A: To find the density of unknown metal, first draw the graph of mass Vs volume. Create a regression…

Q: TARTING AMOUNT X The Bay of Fundy in Nova Scotia, Canada is reported to have the largest tides in…

A: Given rate = 6.08 feet per hour  To calculate rate in meter per second.

Q: chemist must dilute 88.1 mL of 351. mM aqueous aluminum sulfate (Al₂(SO4)3) solution until the…

A:

Q: When you perform the following operations, how many significant figures should your answer have?…

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Q: Convert the density of the unknown solid from g/ml to the SI units of Kg/m^3

A: g/mL to kg/m3

Q: When aluminum metal reacts with HCI(aq), the products formed are AICI3(aq) and hydrogen. If 2.326…

A:

Q: A chemist must dilute 85.6 mL of 119. mM aqueous potassium permanganate (KMnO4) solution until the…

A:

Q: A chemist must prepare 750. mL of 1.00 M aqueous nickel(II) chloride (NiCl₂) working solution. He'll…

A:

Q: mol aqueous L A chemist must prepare 875. mL of 10.0 mM aqueous calcium sulfate (CaS0,) working…

A: On dilution, the concentration of solution decreases but the number of moles remain constant. Write…

Q: What mass of iron in the nail reacted with the water?

A:

Q: the diameter of a 16-gauge wire has a diameter of 0.05082 in. what length of wire in meter is found…

A: Diameter = 0.05082 inch. 1 inch = 2.5cm. 0.05082 inch = .05082 × 2.5 = 0.12705 cm.  Mass = 1.60lb =…

Q: A chemist must dilute 28.6 mL of 801. mM aqueous aluminum sulfate (Al₂(SO4)3) solution until the…

A:

Q: 3 1 1 1 1 Part 1: Convert units of volume. In chemistry, volume is usually reported in units of…

A: Since you have asked multiparts, we will solve the first three subparts for you. If you want any…

Q: The volume of water in large scale reservoirs is often measured in units of an acre-foot, which is…

A: 1 acre-foot = 43,560 ft³ 1 US liquid gallon = 231 cubic inches 1 US liquid gallon = 3.785 liters 1…

Q: A chemist must prepare 550. mL of 45.0 mM aqueous copper(II) sulfate (CuSO4) working solution. He'll…

A: When a concentrated solution is diluted then number of moles remains same only volume of solution…

Q: mol A chemist makes 240. mL of mercury(II) iodide (HgI₂) working solution by adding distilled water…

A: Given, Note: 1000 mL = 1 L Stock solution: Concentration of mercury (II) iodide (M1) = 0.000117…

Q: A chemist must dilute 15.5 mL of 441. mM aqueous potassium permanganate (KMnO4) solution until the…

A:

Q: Chemistry

A: According to significant figure rule the number have least significant digit known as limiting term.…

Q: 10−6 ÷1.60×10−19 16.503 − 5.49 −10.012 + 24.67

A: This problem can be soved by applying BODMAS rule which operates the following operation in the…

Q: 4.44 x 1066/2.82 x 1023 = O 1.57 x 1043 O 1.57 x 1041 O 1.57 x 1044 O 1.57 x 1042

A:

Q: The mass of a uranium atom is 3.9526 × 10-22 grams. What is this value in nanograms? In your…

A: The mass of uranium atom = 3.9526×10–22 grams

Q: Perform the calculations below and give the results with correct significant figures. 27.8 g +…

A:

Q: A chemist must prepare 750. mL of 240. mM aqueous sodium carbonate (Na₂CO3) working solution. He'll…

A:

Q: A chemist prepares a solution of copper(II) fluoride CuF2 by measuring out 0.0312g of copper(II)…

A: Given that : A chemist prepares a solution of copper(II) fluoride CuF2 by measuring out 0.0312g of…

Q: Convert the following 3.0 x 10^-12 g/cm^3 = ng/m^3

A: The conversion of quantity from one unit to another unit is known as unit conversion. During the…

Q: The volume of a metal bar can be determined by immersing it in water in a graduated cylinder and…

A:

Q: A chemist prepares a solution of barium chlorate (Ba (CIO3),) by measuring out 13.7 g of barium…

A: Concentration = number of moles/volume(in L)  And,  Number of moles = mass/molar mass

Q: A chemist prepares a solution of nickel(II) chloride (NICI,) by measuring out 1.2x 10 jumol of…

A: Moles of NiCl2=1.2×102 μmol Volume=250 mL

Q: Determine the number of microliters in 14.9 ml (1.00 x 10 6 microliters = 1.00 liter

A:

Q: Tums is a popular remedy for acid indigestion. A typical Tums tablet contains calcium carbonate…

A: Given: The mass of the tablet = 1.201 g Volume of HCl = 42.035 mL The density of HCl = 1.140 g/mL…

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: Least number of significant digit used in question will be considered also in answer. So,

Q: A chemist prepares a solution of barium chloride (BaCl₂) by measuring out 26.5 μmol of barium…

A: Given  BaCl2 measurement in a volumetric flask  is Number of moles = 26. 5 numol Volume   = 300.mL…

Q: The concentration of carbon monoxide (CO), a common air pollutant, is found in a room to be 5.7 x…

A: The volume of the room is calculated as following,

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: Question 1: Determine whether the answer to each calculation has the correct number of significant…

A: (1)

Q: Use the algebraic equation to determine the mass if the volume was 622 mL.  mass (g) = (3.60…

A: Given, mass (g) = (3.60 g/mL)(volume (mL)) + 11.4 g y= mass (g) m = 3.60 g/mL x= 622 mL b = 11.4 g

Q: mol A chemist must prepare 650. ml. of 1.00 M aqueous-calcium bromide (CaBr) working solution.…

A: As we know,Moles the solute remains same on dilution but volume of the solution increases.Dilution…

Q: A chemist prepares a solution of sodium nitrate by measuring out 2.1 *10^2 of sodium nitrate into…

A: The molar mass of

Q: Dilution A chemist makes 610. mL of copper(II) fluoride (CuF,) working solution by adding distilled…

A: Final volume= 610mL Initial volume= 270 mL Centration of copper (2)floride=0.00449M

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.