Calculate the density of the coin from your measurements, and determine how many significant figures should be included in the reported result.

Q: A sample is found to contain 8.47×10-6 g of salt. Express this quantity in nanograms.

A: Given that Mass of sample (salt) = 8.47 × 10-6 g Mass of sample  = ? ng

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: what is the density of the salt in g/mL?

A: Density = mass ÷ volume    Rule for significant figure in division:- Round off final answer as per…

Q: A general chemistry student found a chunk of metal in the basement of a friends house. She measured…

A: Density of a metal is specific and constant. Density = mass/volume  1 mL = 1 cm3 Given that: Mass of…

Q: In a laboratory, you determine that the density of a certain solid is 5.23 x 10 ° kg/mm. Convert…

A:

Q: In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the mass…

A:

Q: A student goes to the lab and is tasked with measuring the mass of a block of nickel metal that has…

A: In given question there is need to define how the exact value is determined from different…

Q: A homogeneous mixture was prepared by mixing 0.90 g A, 105.7 g B and 48.17 g C. The volume is found…

A: Given, Volume of mixture = 56.6 cm3 Mass of A = 0.90 g Mass of B = 105 .7 g Mass of C = 48.17 g

Q: The mass of an object was found to be 28.90 g. When this object was dropped in a graduated cylinder…

A: Given, mass of object =28.90 gramthis object was dropped in a graduated cylinder partially filled…

Q: The stockroom has provided you with a 1.60 M stock solution of NaCl. What volume of this stock…

A: Dilution of the solution: When we dilute a concentrated solution with pure water, the mole of solute…

Q: A chemistry student needs 45.0 mL of diethmylamine for an experiment. By consulting  the CRC…

A: Given,Volume of diethylamine = 45.0 mL = 45.0 cm3         (1mL = 1cm3)Density of diethylamine =…

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: Digitalis, a drug used to control atrial fibrillation in patients is to be given as 20.0 mg/kg body…

A: Given: Body weight = 160.0 pound Dose for patient: 20.0 mg/kg body weight 2.205 pounds = 1.00 kg

Q: You want to determine the density of a compound but have only a tiny crystal, and it would be…

A: Given, volume of CHCl3 = 5.50 mL            density of CHCl3 = 1.492 g/mL            volume of CHBr3…

Q: You have weighed out 24.5685 g irregular solid chips on an aluminum foil and transferred those chips…

A: Given : mass of solid = 24.5685  initial volume of water in cylinder = 50 mL And final volume of…

Q: You are trying to determine the density of a piece of metal. You use a balance and find that the…

A:

Q: The shattered glass case at the scene of a jewelry store robbery was determined to be made of potash…

A: Density of any substance can be defined as the ratio of the mass of the substance to its volume. It…

Q: A 100.0 mL graduated cylinder was used to measure the volume of water. The initial volume of the…

A: Given:Mass of coin = 96.51 g.Volume of coin = final volume – initial volumeVolume of coin = 56.0 mL…

Q: A bar of gold with a mass of 2060.5 g has the following dimensions: 7.30 cm by 3.25 cm by 4.50 cm.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

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: Suppose 36.4 g of copper(II) acetate is dissolved in 250. mL of a 0.50 M aqueous solution of sodium…

A: Hii there, since there are multiple question posted. We are answering first question. If you need…

Q: A student reported the mass of ten glass beads as 2.507 ± 0.015 g. What should the student report as…

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Q: In 1993 the Minnesota Department of Health set a health risk limit for BCME in groundwater of 2.00…

A:

Q: If the price of gold is $1,318.61 per troy ounce (1 troy ounce is exactly 31.1035 grams), what is…

A: Given   The price of gold is $1,318.61 per troy ounce. The second given price is $1,000,000. The…

Q: The density of water at 4.00°C is 0.967 g/mL. How many molecules of water are present in a 499.8 mL…

A: We have to find the number of molecules of water in a given volume. The density of water is also…

Q: A sample of an unknown ore weighing 1.275 kg is found. When the sample is placed into a large…

A: Given that : Mass of the sample = 1.275 kg = 1275 g When the sample is placed into a large graduated…

Q: You want to determine the density of a compound but have only a tiny crystal, and it would be…

A: Given, volume of CHCl3 = 5.50 mL           density of CHCl3 = 1.492 g/mL           volume of CHBr3 =…

Q: The shattered glass case at the scene of a jewelry store robbery was determined to be made of potash…

A: When a body is immersed in a fluid, it displaces the fluid. Then calculate, --------- (1)

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: A student places 14.8 mL of water in a graduated cylinder.  The mass of the water and the graduated…

A: As the metal pellets are added into the cylinder the volume of the cylinder changes as the metal…

Q: The shattered glass case at the scene of a jewelry store robbery was determined to be made of potash…

A: Density of glass fragment = mass of glass fragmentvolume of glass fragment…

Q: When a mixture of aluminum powder and iron(III) oxide is ignited, it produces molten iron and…

A: According to law of conservation of mass, mass can neither be created nor be destroyed in any…

Q: A chemistry student needs 90.0g of carbon tetrachloride for an experiment. The density of carbon…

A:

Q: The density of a cooking oil is 0.92g/cm^3 calculate the mass in grams g for an oil droplet has a…

A:

Q: A group of students took turns using a laboratory balanceto weigh the water contained in a beaker.…

A: A group of students took turns using a laboratory balance to weigh the water contained in a beaker.…

Q: A general chemistry student found a chunk of metal in the basement of a friend's house. To figure…

A:

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.