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A. What is the mol amount of an unknown gas that occupies 6.20 L at 20 C at a pressure of 1.10 atm?
B. If the smaple has a mass of 9.07 g, what is in the molar mass (in g/mol) of the substance?
C. If the unknown gas is a diatomic element, what is the most likely identity of the element of the gas?
Asymmetric deposition means that thicker deposition occurs on one side of a feature (a step or side of a trench, for example) than the other.
Question- KI has a face-centered cubic unit cell in which the I- anions occupy corners and face centers, while the cations fit into the hole between adjacent anions. What is its density if the ionic radii of K+, I- ions are 169.1 pm and 184.0 pm, ..
Determine that how many moles of molecular hydrogen are used per mole of the precatalyst in order to convert it entirely to platinum metal?
The specific heat capacity of the solution produced was 4.20 J/g•°C, and final temperature reached was 34.91°C. How much heat was produced by the dissolution
a radio stations channel such as 100.7 fm or 92.3 fm is actually its frequency in megahertz rm mhz where 1 rm mhz106 rm
An Ideal gas is in a 375mL Container. Pressure inside is 1012 mmHg. Temp is 31.3 deg Celsius. How manly moles of Ideal Gas are there?
While coal is burned, the sulfur present in coal is converted to sulfur dioxide (SO2), Explain which is responsible for the acid rain phenomenon.
How much material must be eroded to bring the mountains eventually down to the sea level? Use the crust and mantle densities of 2800 kg/m3
Science 30 student has a hydrogen carbonate ion, HCO3-(aq), solution. Which of the following substances could she add to make a solution with the lowest pH?
What are the elements with eight electrons in their outermost energy shell are called as What are metalloids?
What is the percentage by mass of CH4 in the mixture. The standard enthalpies of combustion for CH4 and C2H6 are -890.3 kJ mol-1 and -1569.7 kJ mol-1, respectively.
Which of the following is a neutralization reaction?
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