Answer:
46.3g H2O

Explanation:
start by balancing it: CaC2(s) + 2H2O(g) -> Ca(OH)2(s) + C2H2(g)

then use factor label method to solve

82.4g CaC2 x (1 mol CaC2/64.10g CaC2) x (2 mol H2O/1 mol CaC2) x (18.016g H2O/1 mol H20) = 46.3g H2O

4 0

2 years ago

Name the acids: HBrO

solong [7]

Answer:

Hypobromous acid

Explanation:

6 0

3 years ago

Which of the following represents the ground state electron configuration for the Mn3+ ion? (Atomic number Mn = 25) 1s2 2s22p6 3

V125BC [204]

Answer:

$1s^22s^22p^63s^23p^63d^{4}$

Explanation:

Manganese is the element of group 7 and forth period. The atomic number of Manganese is 25 and the symbol of the element is Mn.

The electronic configuration of the element, manganese is -

$1s^22s^22p^63s^23p^63d^{5}4s^2$

To form $Mn^{3+}$ , it will lose 3 electrons from the valence electrons and thus the configuration of the ion is:-

$1s^22s^22p^63s^23p^63d^{4}$

8 0

3 years ago

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