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2 years ago

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Chemistry

1 answer:

Marina CMI [18]2 years ago

6 0

Answer:

Molar mass = 30.026 g/mol

Explanation:

Let Molar mass be mm

mm of CH2O = 12.01 + 2(1.008) + 16.00

= 12.01 + 2.016 + 16.00 = 30.026 g/mol

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Which type of energy refers to the sum of potential and kinetic energies in the particles of a substance?

Andru [333]

Thermal (heat) energy is ur answer mate

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3 years ago

If you breathe normally you have about 0.11 moles of air in your lungs and

Firdavs [7]

Answer:

5.89 Liters

Explanation:

Lung capacity=(2.4/0.11) x 0.27

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3 years ago

What is a scientific question that can be asked about the insect in the photo?

bija089 [108]

The answer is "<span> Does the butterfly primarily visit orange flowers?"

A good scientific question has certain attributes. It ought to have a few answers, ought to be testable. A scientific question is an inquiry that may prompt a speculation and help us in noting the explanation behind some perception. It is an inquiry that may prompt a speculation and help us in noting the explanation behind some perception.
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3 years ago

Write equations that show the processes that describe the first, second, and third ionization energies for a gaseous gadolinium

Inessa [10]

Answer:

Gd(g) → $Gd^{+}(g) + e^{-}$ , $Gd^{+}(g)$ → $Gd^{2+}(g) + e^{-}$ , $Gd^{2+}(g)$ → $Gd^{3+}(g) + e^{-}$

Explanation:

Ionization energy is the energy required to remove an electron from a gaseous atom or ion.

The first ionization energy is the energy required to remove the valence electron(outermost) from a neutral atom:

Gd(g)→ $Gd^{+}(g) + e^{-}$

The second ionization energy is the energy required to remove next/second electron from $x^{+}$ ion. The second ionization energy is always higher than the first:

$Gd^{+}$ (g) → $Gd^{2+}(g) + e^{-}$

The third ionization energy is the energy required to remove third electron from $x^{2+}$ ion:

$Gd^{2+}$ (g) → $Gd^{3+}(g) + e^{-}$

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3 years ago

Bismuth(III) sulfate is an ionic compound formed from Bi3+ and SO42-. What is the correct way to represent the formula?

Hitman42 [59]

Answer:

Bi2(SO4)3

Explanation:

Bismuth(iii) sulfate is an ionic compound therefore, their is transfer of electron. Ionic compound has both cations and anions. The cations is positively charged ion while the anions is negatively charged ions. The cations loses electron to become positively charged while the anions gains electron to become negatively charged.

From the compound above, Bismuth(iii) sulfate the cations will be Bismuth ion which loses 3 electrons. The anions is the sulfate ion (S04)2- with a -2 charge.

The chemical formula can be computed from the charge configuration as follows

Bi3+ and (SO4)2-

cross multiply the charges living the sign behind to get the chemical formula

Bi2(SO4)3

Note the final chemical formula, the numbers are sub scripted

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3 years ago