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2 years ago

Importancia de la química orgánica en el desarrollo de los seres vivos.

1 answer:

4 0

Answer:Las moléculas orgánicas son importantes para los seres vivos porque la vida se basa en las propiedades del carbono. El carbono es un elemento importante porque puede formar cuatro enlaces covalentes. ... Los esqueletos de carbono contienen los grupos funcionales que participan en las reacciones bioquímicas.

Explanation: ahi tienes que tengas lauralejandrasg un gran dia

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A solution with a ph of 2.0 has a hydrogen ion concentration ten times greater than a solution with a ph

weqwewe [10]

The answer is c. 0.20 .

3 0

2 years ago

The following list contains some common radicals. Using the charges on these ions and the idea of valence, predict the formulas

lesantik [10]

Answer : The formula for the compound sodium carbonate is $Na_2CO_3$

The formula for the compound potassium permanganate is $KMnO_4$

Explanation :

For formation of a neutral ionic compound, the charges on cation and anion must be balanced.

The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non-metals.

(a) Sodium carbonate

In the compound, the sodium metal forms an ionic compound with polyatomic anion (carbonate) $CO_3^{2-}$ .

Here, sodium is having an oxidation state of +1 called as $Na^{1+}$ cation and carbonate $CO_3^{2-}$ is an anion with oxidation state of -2. The charges are not balanced. So, the charges are balanced by the cris-cross method. Thus, the compound formed will be, $Na_2CO_3$

Hence, the formula for the compound sodium carbonate is $Na_2CO_3$

(b) Potassium permanganate

In the compound, the potassium metal forms an ionic compound with polyatomic anion (permanganate) $MnO_4^{1-}$ .

Here, potassium is having an oxidation state of +1 called as $K^{1+}$ cation and permanganate $MnO_4^{1-}$ is an anion with oxidation state of -1. The charges are balanced. Thus, the compound formed will be, $KMnO_4$

Hence, the formula for the compound potassium permanganate is $KMnO_4$

3 0

3 years ago

Which statement is NOT true of molecular orbitals: Select one

trapecia [35]

Answer:

A: Antibonding molecular orbitals are higher in energy than all of the bonding molecular orbitals.

Explanation:

Molecular orbital theory describes <u>covalent bonds in terms of molecular orbitals</u>, which result from interaction of the atomic orbitals of the bonding atoms and are associated with the entire molecule.

A bonding molecular orbital has lower energy and greater stability than the atomic orbitals from which it was formed. An antibonding molecular orbital has higher energy and lower stability than the atomic orbitals from which it was formed.

Electrons in the antibonding molecular orbital have higher energy (and less stability) than they would have in the isolated atoms. On the other hand, electrons in the bonding molecular orbital have less energy (and hence greater stability) than they would have in the isolated atoms.

5 0

3 years ago

If a balloon containing 3000 L of gas at 39 C and 99 k Pa rises to an altitude where the pressure is 45.5 kPa and the temperatur

mihalych1998 [28]

Answer:

The new volume of the balloon will be 6046.28 L

Explanation:

Initial pressure (P1) = 99 kpa

initial volume (V1) = 3000 L

Initial temperature = 39 C = 39 + 273 = 312 K

Final pressure (P2) = 45.5 kpa

Final temperature = 16 C = 16 +273 = 289K

Final volume = ????

To calculate the final volume using the general gas equation

P1 V1 / T1 = P2 V2 / T2

make V2 the subject of the formular

V2 = 99000 ×3000× 289 / 45500×312

V2 = 85833000 /14196

V2 = 6046.28 litres

5 0

3 years ago

How do I do number 64?

shutvik [7]

They are isotopes because isotopes have the same number of protons (atomic number) but can have different numbers of neutrons + protons (atomic mass).

5 0

3 years ago