What is the mass (kg and solar masses) of a Nebula?
110402
A nebula can have any mass.  A planetary nebula typically has a mass from 1 to several solar masses.  Star forming nebulas can have a mass excess of 100 soalr masses.
1081187
A nebula (Latin: "mist"; pl. nebulae or nebulæ, with ligature) is an interstellar cloud of dust, gas and plasma. Originally nebula was a general name for any extended astronomical object, including galaxies beyond the Milky Way (some examples of the older usage survive; for example, the Andromeda Galaxy is sometimes referred to as the Andromeda Nebula).
730461
near zero. \n\nExcept that there is some mass in space, - like space dust. And there's the solar wind pushing outwards.
616769
9.109 3826(16) × 10−31 kg (Kilograms)\n1⁄1836.152 672 61(85) amu  (Atomic mass units) \n0.510 998 918(44) MeV/c2 (Mega electonvolts/coloumb squared)
593336
http://math.ucr.edu/home/baez/physics/Relativity/SR/light_mass.html
1149852
Black holes contain mass which, when in the presence of a gravitational field (presumably other than its own), has a weight.  This weight would depend entirely upon the mass of the black hole, of course.  The question would be the equivalent of asking, "How much does Earth weigh?"  Well, how much does it weigh when its mass is placed upon what, Earth?  (Typically, this is what is assumed, so:  Yes.)\n\nAs an example, the (presumed) black hole in the Cygnus X-1 binary is estimated to be from 7 to 13 solar masses, placing its "weight" (if weighed on Earth) anywhere from 1.4x10^31 to 2.6x10^31 kilograms.
377820
The Sun is a ball of plasma with a diameter of 1.392 million km (864,950 mi) and a mass of about 2.0×1030 kg, which is somewhat greater than that of an average star in the Milky Way galaxy. About 74% of its mass is hydrogen, with 25% helium, and the rest made up of trace quantities of heavier elements. The Sun is about 4.6 billion (109) years old and is about halfway through its main sequence evolution, during which nuclear fusion reactions in its core fuse hydrogen into helium. About 5 million tons of matter are converted into energy within the Sun's core every second, producing neutrinos and solar radiation. In about 5 billion years, the Sun will evolve into a red giant and then a white dwarf, creating a planetary nebula in the process.
665122
mass of Earth = 5.9742 × 1024 kilograms
909717
Do you mean 2000 times the mass?  Sounds like a proton.  An electron has a mass of 9.109 x 10^-31 kg while a proton has a mass of 1.673 x 10^-27 kg, about 1837 times as great.  An electron has a negative charge and a proton has a positive charge.  Despite the difference in mass, the electrical charges are equal in magnitude.
89835
In terms of mass.\nThe SI unit for mass is the kilogram (kg).\n\nDo not confuse mass with weight, they are not the same thing.  The mass of an object is constant throughout the universe where as weight is a vector force that depends on the gravitational field around the object.  It is unfortunate that these two words are used interchangably sometimes.
722060
I found a reference that says it's equal to 1000 sq meters.\n\nIt was on a Palastinian web site.
901416
There are 16 distinctly different weights and black holes.\n   They are called anti-matter weight activation due to the\n   never defined size, so the inconsistency of measurement\n   is a characteristic of parallel science.  The size of a new \n    star, in orbitting magnetized.\n    So the actual sitings are radion stars.  They are poisonous,\n      hot, exploding, and reshaping local asteroid fields.  This\n     interaction is NOT included in a weight, so the question is\n     purely mathematically theoretic.  The two I have read most\n     about are magnesium one, and pyrite 10.  These weigh\n       Thirty trillion pounds lead weighted to uranium neutron7\n     and 40 trillion etc.  The multiplier here at the end is translated\n     as n factor that is times times, so it is 1million times 1\n       thousand times 100 give or take a factor.  This estimate\n      is now megaplex times 100 plus plus, fields interactive,\n     times one million plus plus again to determine size limitation.\n           Simplistic theories say that this gaseous volume is put\n      in a column cooled to average space temperature safe for\n      orbitting, and megaplex being the highest factor now set\n      for material science at 10 billion megaplex  point 4 billion.\n            A volume number that is assigned to new stars.
817154
Sirius B is one of the most massive white dwarf known.  Its volume is about the same as Earth, but the mass is comparable to that of the Sun. Since the mass of the Sun is approximately 333000 times that of the Earth, and that Earth has a density of 5.5, we have a specific density of 1800000 for Sirius B. That means 1 cubic cm of Sirius B should have a mass of 1800000 g,\nor 1800 kg, or 1.8 tonne (about 2 tons). So, this is not quite the 50 tons you were told.\nThat said, one may have been talking about the *core* of the star, where density is evidently a lot higher than the average for the whole star.
506694
Gas cloud, Read further:\n\nNebula\n\nOriginally "nebula" (Greek for "cloud"; plur. nebulae) was a sort of catch-all name for any extended astronomical object, including galaxies beyond the Milky Way. This occasionally survives, but the stricter modern term is used for interstellar clouds of dust and gas, which are categorized by how they are illuminated.\n\nSome types of nebula have special names, such as dark nebulae, emission nebulae, planetary nebulae, reflection nebulae, and solar nebulae. \n\nFollow the links in the source links below for more info on nebulae\n\nst
745459
light has no mass, therefore no weight.\n\nHowever, if all the energy of the light were somehow converted to mass, its mass would be m=E/c^2.
781957
Approximately the mass of 2 billion solar masses.\n\np.s. Weight is a function of something in a gravitational field, what you really are asking about is mass.
95148
Actually, the mass of a proton is 1.00727664669 atomic mass units.\n\nAn atomic mass unit is defined such that Carbon 12 is exactly 12.  The carbon atom weighs less than 12 times the proton (because of nuclear binding energy).