The correct answer is (d.) welding. Welding is a fabrication method that joins together materials, usually metal. by causing fusion. This method melts the materials upon joining it together for a specific temperature without melting the base metal.
Answer:
Hydrogen, 0,2 mol
Explanation:
= 22, 4 l/mol
V () = 6,72 = 6,72 l
V () = 6,72 = 6,72 l
The formula is:
n =
n () = 6,72l /22,4 l/mol = 0,3 mol
n () = 6,72l /22,4 l/mol = 0,3 mol (the same)
But from the equation we get a proportion that 1 mol () - 3 mol ()
(we have more hydrogen than is need for the reaction)
So there is excess of
We only need = 0,1 mol ()
0,3 mol (hydrogen quantity we have) - 0,1 mol (hydrogen quantity we need for the reaction) = 0,2 mol (excess)
make me the brainliest
Matter can neither be created nor destroyed. Meaning you can't have "no matter and get matter". I hope this helps.
Data:
m = 35g
Q = 48 j
T1 = 298K
T2 = 313K
Cs = ?
Fórmula: Q = m*Cs*(T2 - T1) => Cs = Q / [m (T2 - T1)]
Cs = 48 j / [35g (313K - 298K] = 0.0914 j / g*K = 91.4 j / kg*K
Cold blooded animal? it’s a bit vague sorry