In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the but occupying less space than Our moon. Suppose that one of these black holes mass our sun, Suns and a radius has a mass of 1×103 radius of our moon. one-half the radius of equal to what is theits density in grams per cubic centimeter? The mass of sun is 2.0 x 10³ kg, and the rudius is 2.16 x 10³ mi. (volume of sphere= of the man 4/3³)

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

A:

Q: A scientist removed a sample of 37.8 grams of a chemical from a container. The sample was 4 1/4 less…

A: Given the mass of the sample removed out of the total mass = 37.8 g  Suppose the total mass of the…

Q: eral contains 5.032 % of a precious metal, by mass. The precious metal as a density of 3.681 g/cm°.…

A: Density = 3.681 g/cm3  Mass % of metal mineral = 5.032%  Density = mass/volume

Q: O. In chemistry, the particles of matter that we encounter are quite small. The size of atoms were…

A: radius of Chlorine atom = 0.99

Q: If a cube of gold has a length of 2.50 cm, what is the mass of the gold sample? which has a density…

A:

Q: The density of mercury is 13.6 g/cm^3. What is the mass of 6.50 cm^3 of mercury? (^ means that the…

A: Given  Density of mercury = 13.6 gram/cm3  Volume of mercury = 6.50 cm3 Mass = ?

Q: A perfect cube of a gold metal was found to have a mass of 45.85 g. The density of the gold is 19.3…

A: Given density = 19.3 g/cm3 mass = 45.85 g

Q: Mass and weight are related via the equation W=mg on Earth. Mass is how much matter an object has…

A: On earth the acceleration due to gravity is 9.8 m/s2. The unknown planet having acceleration due to…

Q: Take the mass measurement with nitrogen (28 dalton or atomic mass units per molecule) and the mass…

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Q: Bronze is an alloy made of copper (Cu) and tin (Sn). Calculate the mass of a bronze cylinder of…

A:

Q: An atom of a particular element has a volume of 7.8 x 10-31 m3. What is this volume in cubic…

A: An atom is always neutral because of the equal number of electrons and protons. Electrons are…

Q: he level of water in a graduated cylinder measured 48.8 mL. An irregularly-shaped piece of metal was…

A:

Q: In an experiment, 125 cm3 of zinc and 125 cm3 ofiodine are mixed together and the iodine is…

A: Given data Volume of Zinc = 125 cm3  Volume of iodine = 125 cm3  density of Zinc = 7.13 g/cm3…

Q: The planet Mars orbits 2.279 x 10¹¹ m from the Sun. Express the distance using the appropriate…

A: 1m = 10-3 mm1 km = 1000 m1 nm = 10-9 m1 Gm = 109 m

Q: Gold is a very soft metal that can be hammered into extremely thin sheets known as gold leaf. If a…

A: The average thickness of the sheet produced from given grams of gold is calculated as shown below

Q: The volume of sea water present on the Earth is about 330,000,000 cubic miles.  Since sea water…

A: Converting cubic miles to cubic centimeters, as 1 cubic mile = 4.168×  1015 cm3 Thus 330,000,000…

Q: 7. The speed limit on a road in Mexico is 90 km/hr. What is this speed equivalent to in miles per…

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Q: A hollow spherical iron ball has a diameter of 15.3 cm and has a mass of 10.7 kilograms. Assuming…

A: Given :  Density = 7.86 g.cm-3  Diameter = 15.3 cm Mass = 10.7 kg

Q: what mass (in g) of solid lead would displace exactly 234.6 liters of water? The density of the lead…

A: Given : density of lead = 11.4 g/cm3                                                 Volume of water…

Q: Atoms are the smallest spherical particles that make up any matter. If 6.0x10^23 atoms of aluminum…

A: Avogadro’s number is used to determine the number of atoms present in 1 mol of an element.…

Q: The volume of a single barium atom is 4.29 x 10 μL cm³. What is the volume of a barium atom in…

A: We know that the relationship between cubic centimeter (cm3) and microliter(µL) is :1 cm3 = 1000 µL

Q: A hollow spherical iron ball has a diameter of 15.3 cm and has a mass of 13.5 kilograms. Assuming…

A: The formula to find the volume of iron of a hollow sphere, V is: V = 43πR3 -  43πr3 (or) V =…

Q: A    bullet    recovered    from    a   crime    scene    has   a   mass    of    9.68    g.    A…

A: .357 Magnum is a low velocity cartridge. The .357 is to some extent reliant on mechanical wounding…

Q: Mercury is commonly supplied in flasks containing 34.5 kg (about 76 lb) of the element, which has a…

A:

Q: Jupiter’s mass is estimated to be 1.90 x 1027 kg, and it has a diameter of 142,984 km. Assuming that…

A: Density (d) , mass (m) and volume (V) are related as:

Q: The density of pure copper is 8.89 g/cm3 (at 20 ˚C).Calculate the mass in kg of a copper cube with…

A: Density=massvolumemass=Density x volume1 kg=1000 g1 foot ft=12 inches1 inch= 2.54 cmGiven ,Density…

Q: 8) To determine the volume of an irregular shaped object, it is dropped into a graduate cylinder…

A: The objective of the question is to calculate the density of an irregular shaped object using the…

Q: The diameter of a single carbon particle in a sample of printer toner is 25nm. If you have 50g of…

A: The number of carbon atoms in 50 g of carbon is; nC=mCMMC=50.0 g12.0 g/molNC=50.0 g12.0…

Q: The mass of a proton is 1.67262164 x 10^-27 kilograms. round off this value to three Significant…

A: The significant figure refers to particular digits in a number. According to the measurement rule,…

Q: How do you fint the volume of an element, given the density and mass.  For example, "Determine the…

A: The volume of an element can be calculated from the given below formula if its density and mass are…

Q: In 38.7 mL of water, a gold nugget weighing 523 g is inserted. The volume of the water increases to…

A:

Q: What is the Volume of 9.86 x 10^-2 pounds 7.90 g/mL steal ( hint use the determined density of steal…

A: Given data, Density of steel = 7.90 g/mL 1 pound = 453.6 g Mass of steel = 9.86 x 10-2 pounds =…

Q: In the movie The Italian Job, thieves steal gold bullion. One plan is to carry the ingots of gold…

A: Given : Volume of suitcase = 4.36 x 104 cm3 approx. Density of gold = 19.3 g/cm3  And weight of…

Q: The mass of one atom or molecule of a substance is given in atomic mass units, also called Daltons…

A: Mass of one atom / molecule of a substance is given in atomic mass unit which is also called Dalton.

Q: The Law of Combining Gas Volumes A compound containing only chlorine and oxygen is decomposed into…

A: Given: Mass of Cl = 1.71 g Mass of oxygen = 1.54 g Density of Cl = 3.17g/L Density of oxygen gas =…

Q: The space shuttle tiles have a density of 0.0074 lb/in3. Approximately 1320 tiles cover a surface of…

A: Density of a substance can be calculated by dividing the mass by volumewhich may be expressed…

Q: How many in3 are there in (7.70x10^2) cm3? Given: 1 inch is exactly 2.54 cm.

A: Interpretation: Conversion of given number from cubic centimetre to cubic inch is to be calculated.…

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.