A rectangular  block has the length of 4.20 cm and width of 1.38 cm.   If the  rectangular block has the mass of 25.0 g and density of 8.88 g/ cm3.  Calculate the thickness.   a. 0.486 cm b. 0.0486 cm c. 2.98 x 10exp-4 cm d. 1.65 cm

Q: 3. What is the volume ( in cm) of a metal with a density of 12.76 1b/cm and a mass of 17.4 g? 1 Kg=…

A:

Q: A student measures the mass of a piece of aluminum, and finds it to be 8.945 g. She finds that the…

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Q: 11. 22.4 kg/L to dag/mL 12. 0.74 miles/min to dm/sec 13. 1.42 g/em² to mg/mm?

A:

Q: 30. The density of the element iridium is 22.65 g/cm³. What's the mass of iridium that occupies a…

A: Given information, Density of iridium = 22.65 g/cm3 Volume = 7.35 mm3 = 7.35*10-3 cm3  (As 1mm =…

Q: A sheet of Aluminum foil has a total area of 1000ft^2 and a mass of 3.636g. What is the thickness of…

A: Given information,        Total area of 1000 ft2        Mass of Aluminum foil 3.636 g.…

Q: D. Determining the Density of a Metal Block 246.1389 Mass of metal block Value of smallest markings…

A: Density of a substance is the defined as the mass per unit volume. Density = mass /volume    Given…

Q: 48. Are these data sets on chemical changes consistent with the law of conservation of mass?(a) A…

A: The law of conservation states that for an isolated system the mass can neither be created nor be…

Q: a) 453 mg to g b) 6.0 x 10-9: m to pm c) 2.5 x 10-2 mm to um d) 3.85 x 10° g to kg e) 0.0065 mm to…

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Q: 7.The density of osmium is 22.6 g/cm³. A sample of osmium with a mass of 21.8 g would occupy a…

A: General chemistry.

Q: →2 Hg(t) Fe²(aq) → Cu(s) →2 Hg(t) + 2 Cl(aq) - Sn²+ (aq) → H₂(g) → Pb(s) → Sn(s) - Ni(s) → Cd(s)…

A: Form given table  E°fe3+/fe2+ = 0.77 V E°H2O2 = 1.77 Now,  E°cell = E°c - E°a   = 1.77 - 0.77 = 1.00…

Q: A piece of gold ingot has a mass of 257 g and a volume of 13.3 cm3. Calculate the density of gold in…

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

Q: 11. 22.4 kg/L to dag/mL 12. 0.74 miles/min to dm/sec 13. 1.42 g/cm² to mg/mm?

A: Since you asked multiple questions so as per Q&A guidelines of portal I solve first three parts…

Q: A small hole in the wing of a space shuttle requires a 17.7 cm2 patch. (a) What is the patch’s area…

A: (a) The patch area given is 17.7 cm2 Using conversion factors 1 cm2 = 10-4 m2 1m2 = 10-6 km2 So,

Q: Can't figure it out

A: Reductive Ozonolysis - Ozonolysis allows the cleavage of alkene double bonds by reaction with ozone.…

Q: What is the area of a rectangular surface that is 0.640 inch wide and 1.140 inches long? (A 0.5614…

A: Area of rectangle = Width  × Length  Width  = 0.640 inch Length  = 1.140 inch

Q: M 20. A Jamal has a sample of a substance and was asked to determine the density of this substance.…

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Q: Question attached

A: Density of a substance is equal to the mass of the substance divided by its volume.

Q: The densest known form of matter is the metal Osmium, with a density of 22.48g/cm3. A grapefruit…

A: NOTE: I'm assuming that the diameter of the Osmium sphere will be the same as that of the grapefruit…

Q: A cube of an unknown metal measures 2 cm on its side (length3Dwidth%3Dheight= 2 m.) a. Calculate the…

A: The volume of a cube is equal to length × width × height. The volume of a cube is equal to 2 cm × 2…

Q: 11. 22.4 kg/L to dag/mL 12. 0.74 miles/min to dm/sec 13. 1.42 g/em² to mg/mm? 14. 10095 ft/s to…

A:

Q: Determine the density of the following object in g/cm3 . A cube with edge length = 0.750 m and mass…

A: The density of an object is the ratio of its mass to its volume. The density is an intensive…

Q: Wire in the US is “labeled” by a number called a gauge. A 16-gauge wire has a diameter of 0.05082…

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Q: 4. Aluminum foil is often incorrectly referred to as tin foil; however, tin metal is much more…

A: The volume of the tin foil can be calculated as given below.

Q: A straight, uniform board is cut into three differently sized pieces such that the sum of the…

A: Given that a straight board is cut into three picese such that sum of length of A and B is equal to…

Q: A package of Aluminum foil contains 50 ft? of folil, which weighs approximately 240.0 grams.…

A: A = 50 ft2 = 46451.5 cm2 m = 240 g d = 2.70 g/cm3 calculate thickness first, D = massvolume V =…

Q: cm3. A piece of aluminum has a mass of 75.2 grams. What is the volume (in ml) for the (Note: The…

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Q: A 35.6 g silver object with a density of 10.5 g/cm3 is submerged into water. The graduated cylinder…

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Q: 15) Which one is the derived unit? ( 16) 17) A) Length B) mass C) Time D) Force Which one is not the…

A: Questions are about units errors and chemical and physical changes

Q: A sample of gold weighs 1.2 oz. The sample is pounded into a thin rectangular sheet with an area of…

A: Mass of a substance has many units like gram, kilogram, oz etc. These units can be converted from…

Q: 22) The scientific method involves various techniques which allow researchers to investigate…

A: Experimentation is the process  of doing an experiment.  Observations is the process of following…

Q: A technician used a section of glass tubing to measure the density of   a liquid. The inside…

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Q: a metal sphere has a radius of 1.42 cm and mass of 61.6 g. what is the density of the metal sphere

A: Given : Radius of sphere (r) = 1.42 cm And mass of sphere = 61.6 g

Q: The U.S. quarter has a mass of 5.67 g and is approximately1.55 mm thick. (a) How many quarters would…

A: It is given that a U.S quarter has a weight of 5.67 g and has a thickness of 1.55 mm. and it needs…

Q: the mass of a piece of Zn having a volume of 4.56 cm3 is ________g.

A:

Q: 4. Determine the thickness of a sheet of iron that measures 22.5 cm by 33.8 cm and has a mass of…

A: Given that: Length of sheet (l) = 33.8 cm Width of sheet (w) = 22.5 cm Mass of iron sheet = 1260 g…

Q: A sample of lead ore has a density of 8.80 g/ml. It is composed of two lead compunds: lead oxide,…

A: Given that the sample if lead ore has density of 8.80 g/ml. And it is composed of lead oxide(density…

Q: 27) An artist plans to apply gold leaf to a painting with an area of 2.32 f? and a thickness of 1.50…

A: Volume of the painting can be calculated as:(1ft =30.8 cm and  1micrometer = 10-4 cm)

Q: 34 3. A rectangular sheet of zinc (d = 7.13 g/mL) measures 7.15 cm by 8.97 cm by 0.20 cm. What is…

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Q: 11. 22.4 kg/L to dag/mL 12. 0.74 miles/min to dm/sec 13. 1.42 g/cm to mg/mm? 14. 10095 ft/s to…

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Q: One component of a metal sculpture consists of a solid cube with an edge of length 22.5 cm. The…

A: Edge length of the cube = 22.5 cm   ....Or  because 1m = 100 cm   ...so, = 22.5 cm × (1m / 100 cm )…

Q: A piece of alloy in the form of a disc weighs 50.0 g.  The disc is 0.250 inches thick and has a…

A: First we have to find the volume occupied by the disc

Q: 10. The amount of spaces between particles of matter can be measured. How do we measure the space…

A: Density of a substance is the mass per unit volume. Volume of a substance is the measure of three…

Q: 0.0018cgh 10mrm -1.018mm) | 10. Copper has a density of 8.96 g/cm'. A piece of copper with into a…

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Q: A certain liquid has a density of 2.67 g/cm3. 1340 g of this liquid would occupy a volume of…

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Q: 63. A sample of unknown metal is placed in a graduated cylinder containing water. The mass of the…

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States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.