1 求化学高手完成9道化学问题~1.The density of gold is 19.3g/cm³. (a)What is the volume, in cubic centimeters,of a sample gold that has a mass of 0.715kg? (b)If this sample of gold is a cube,what is the length of each edge in centimeters? 2.(a)Find the number of kilometer...
Coach's notes: Skip ahead to the big red answer if you know what "density" means. But if you're confused because you know that a pound of gold weighs the same as a pound of feathers, but still feel that "gold is heavier than feathers", let's think it through :-) Yes, a pound...
(Hint: the density of mercury is 13.55 g/cm3 and 1 ounce = 28.35 g.) How much does 1.0 ft^3 of mercury weigh given the density of mercury is 13.6 g/ml? The density of mercury, the only metal to exist as liquid at room temperature, is 13.6 g/cm^3 . W...
What is the density of an object has a mass of12.0gand a volume of96.0ml? Density: Physics states that when a substance has some mass and volume, its density will be the division of mass to its volume. For the higher density objects, the distance betwee...
1.If I have 1.600 KL of gold (which has a density of 19.3g/ml) what is its mass in nanograms?2.If I have 1.2044 X 10^25 atoms of carbon,how many grams of carbon do i have?判断一下哪些是物理现象,哪些是化学现象.1.Dissolving salt in water2.Iron rusts3.evaporation4.Dissolving so...
hasamuchlowerurbandensity (密度)than mostof theworld?scities.Nowadaysaboutathirdofthecity isgreenspace. InJuly2019,Londonannounceditswillingnessto becometheworld?sfirstNationalParkCity.Nowthe cityismovingtowardthegoalofachieving50% green spacebytheyear2050byconnectingandexpanding publicparks,greeningupunusedpar...
Gold is traditionally weighed in Troy Ounces (31.1035 grammes). With the density of gold at 19.32 g/cm3, a troy ounce of gold would have a volume of 1.61 cm3. A metric tonne (equals 1,000kg = 32,150.72 troy ounces) of gold would therefore have a volume of 51,762 cm3 (i.e. 1.61...
With the exception of water, density is given at 0°C and atmospheric pressure. Solid materials Density (g/cm3) Platinum 21.4 Gold 19.3 Lead 11.3 Silver 10.5 Copper 8.9 Iron 7.8 Steel 7.8 Diamonds 3.5 Aluminum 2.7 Graphite 2.25 Ice 0.92 ...
Answer to: You have a piece of metal that has a mass of 162 grams and a volume of 111 cm^3. What is the density of your metal in units of grams per...
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