Answer:
Three more electrons
Explanation:
Compared to a phosphorous atom (P) the P3- ion has gained 3 electrons resulting in the trivalent negative charge. P3- is a reduced state of P and to name some properties:
(2) Acids and bases are both H+ donors.
(3) Acids are H+ acceptors, and bases are H+ donors.
(4) Acids are H+ donors, and bases are H+ acceptors.
Answer: Option (4) is the correct answer.
Explanation:
According to Bronsted and Lowry, acids are the species which can donate hydrogen or ions.
Whereas bases are the species which can accept hydrogen or ions.
Thus, we can conclude that the statement acids are donors, and bases are acceptors describes an alternate theory of acids and bases.
The hydrogen atom has only one electron which is present in the first shell.
We know that first shell can hold a maximum of two electrons so due to incomplete valance shell hydrogen atom is reactive and make covalent bond with other reactive atoms. This bonding will complete its valance shell and finish its reactive nature. In the second shell and other shells can hold 8 electrons so we can conclude that hydrogen has one valance electron.
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(2) sublimation (4) solidification
Answer:
Inert gases
Explanation:
Inert elements have a stable electron configuration meaning their shells/orbitals are full with their requisite number of electrons. Therefore, gaining or losing an electron would take high ionization energy. Therefore they are less likely to be involved in chemical reaction unless a high amount of energy is used. An example of an inert gas is Helium.
0.75 mole of H2CO3 = 47 g
3.42 moles CO = 95.8 g
4.1 moles Li2O = 94 g
Answer:
4.1 moles Li2O = 94 g (incorrect)
4.1 mole of Li2O = 122.6g(correct)
Explanation:
1. Molar mass of O2 = 32
0.2 mole of 32 = 0.2×32 = 6.4g (correct)
2. Molar mass of H2CO3 = 62.03
0.75 mole of 62.03 = 0.75×62.03 = 46.5g (47 is correct)
3. Molar mass of CO = 28
3.42 moles of 30 = 3.42×28 = 95.76 (95.8 is correct)
4. Molar mass of Li2O = 29.9
4.1 mole of Li2O = 4.1×29.9 = 122.59g (94g is incorrect)
Answer:
It's 4.1 moles Li2O = 94 g on Odyssey ware