Answer:
not sure, but you know what?
Explanation:
you are amazing! keep doing what youre doing!
The temperature in degree celsius to which the gas was heated is calculated using the Charles law formula
that is V1/T1 =V2/T2
V1=88.2 ml
T1=35 +273 = 308 K
V2=123 ml
T2=?
by making T2 the formula of the subject T2=V2T1/V1
=(123 ml x308 k)/88.2 ml =429.5 K
in degree celsius = 429.5 -273= 156.5 degree celsius
Answer:
copper(ll)oxide
Explanation:
Limit reagent is a reagent that finished thereby stopping the reaction.
2NH3(g) + 3CuO(s)---> N2(g) + 3Cu(s) + 3H20(g)
molar mass of of ammonia = 17.031 × 2 (stiochiometry mole) = 34.06 g/mol
molar mass of CuO = 79.545 × 3 = 238.635 g/mol
molar mass of Nitrogen gas = 28.0134 g/mol
34.06 g of NH3 need 238.635 of CuO to produce 28.0134 of Nitrogen gas
238.635g produce 28.0134 g
x gram of CuO produce 26 gram of Nitrogen gas
x gram = ( 26 × 238.635 ) / 28.0134 = 221.484 g
also
34.06 g of ammonia produces 28.0134g of nitogen gas
y gram of ammonia produce 26g
y gram = (26× 34.06) / 28.0134 g = 31.61 g
but the 34 g of ammonia was used in the reaction and 31.61 reacted leaving and 2.39 g of ammonia gas
The limiting reagent therefore is copper(ll)oxide
The __ increases by 1 as you go left to right across the periodic table.
A. Atomic mass
B. Atomic number
C. Number of neutrons
D. Number of ions
Answer C
