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3.25 x 10^25 atoms of neon gas (Ne) equals how many moles of neon gas (Ne)?...
How many moles of Silicon are 4.20 x 10^25 atoms of Silicon, Si? 69.7 0.0142 mol 0.396 mol none of these
8. i) How many moles of Neon gas will occupy a container with a volume of 2.5 L at a temperature of 31.5°C and a pressure of 912 torr? ii) What is the density of the gas? 9. A tank of compressed mixed gases contains 0.40 moles of Hz (hydrogen), 1.3 moles of NO2 (nitrogen dioxide), and 0.80 moles of Ar (argon). The total pressure in the tank is 2.8 atm. What is the partial pressure of the Hz gas?...
5. (2 points) How many photons are emitted from neon gas if all the atoms of a 20.18 g sample relax from an n 6 excited state back to an n 1 ground state? A. 7.221 x 1024 B. 6.022 x 102 C. 5.022 x 1022 D. 3.011 x 1024 E. 1.507 x 103
3.41 How many moles of tantalum atoms correspond to 1.56 x 10 atoms of tantalum?
How many oxygen atoms are in 3.02 moles of MgSO4? 1.82 x 1024 atoms 1.59 x 1023 atoms 2.41 x 1024 atoms O 7.27 x 1024 atoms
How many atoms of copper (Cu) are contained in 1.75 moles of copper atoms? How many moles of aluminum ions (Al 3+) are present in 7.25 x 1025 Al 3+ ions? How many moles of aspirin contain 8.62 x 10 28 molecules? How many sugar molecules are contained in 0.475 mole of sugar? What is the molar mass of nicotine (C10H14N2), the toxic and addictive stimulant in tobacco? In this balanced chemical equation, 2 C18H30O2 + 49O2 à 36 CO2...
4. How many moles of hydrogen atoms are needed to make in 4.45 x 1022 formula units of (NHa) PO.? Show all calculations. CANO ulob o 0.07 5. How many atoms of nitrogen are found in 6.45 grams of (NH4), PO,? Show all calculations
How many moles of cobalt (Co) atoms are there in 6.00 x 10° 6.00 billion) Co atoms? mol Enter your answer in scientific notation.
There are 3.0 x 10^22 copper atoms in a pure copper penny. How many moles of copper does the penny contain?
How many moles are in 7.98 x 10 atoms of sodiqm? Please include the correct unit in your answer. astringent, AgNO3 Spell out the names of the elements separated by commas.