It’s hydrosphere if it’s right lmk
Answer: He(g)
Explanation: I had the same question and I got the answer right
Answer:
9.474 x 10^2
Explanation:
ok. first you have to get the value in the required unit so 9474mm/(10mm/cm) = 947.4 so scientific notation states that the number must be raised to any power of an integer and the value of the number being raised must be less than than 10 and more than or equal to 1
so it must have one digit in front so.. 947.4 becomes 9.474 and because you move 2 places to the left, ur power is positive 2
and proof 10^2 is 100 so multiply 9.474 by 100 and u will get 947.4 cm which is also 9474 mm
Answer:
1) Assuming you mean Phosphorous Pentoxide (P4O10) there are 6.02x10^23 x 4 (number of P in P4O10) x 5 moles = 1.38x10^25
2) Divide 1.0x10^20/6.02x10^23 = 1.7x10^-4 moles
3) The balanced equation would be 4P + 5O2 —-> P4O10. Starting with 8 moles of P 8/4 = 2. You generate 2 moles P4O10
4) CH4 has a molecular mass of 12+4 = 16. Starting with 100g/16g/mole = you have 6.25 moles of methane. As there are 4 atoms of hydrogen in each molecule of methane, you multiply 6.25 moles methane by 4 atoms H/molecule and get 25 moles of hydrogen or 1.505e25 atoms of hydrogen
Explanation: