Chemistry, 19.09.2019 16:50 SMNS625

How many grams of hydrogen are in 92 g of ch4o?

Answers: 1

Show answers

Answers

The answer to this question would be: 11.5 grams

The molecular mass of hydrogen is 1, oxygen is 16 and carbon is 12. Then the molecular mass of CH4O would be: 12 + 4(1) + 16= 32.
To find the hydrogen mass, you just need to divide the hydrogen with total mass, resulting in the mass ratio of hydrogen to the compound. Then the amount of hydrogen inside 92 gram of CH4O are: 92grams * (4/32)= 11.5 grams

Answer from: tarhondaeiland4122

The mass of Hydrogen in 92 g of CH4O is 11.5 grams

Further explanation

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

In the same compound, although from different sources and formed by different processes, it will still have the same composition/comparison

With this law, we can calculate how many grams an element is needed to make a compound with a certain mass, as desired

The mass of compounding compounds can also be calculated.

For example, the mass ratio of oxygen (O) and hydrogen (H) elements in H₂O remains at 8: 1. So if you know the amount of mass of oxygen you can know the amount of hydrogen and water mass.

Or the comparison of CO₂ with C: O = 3: 8

Mass A in AxBy = (x x Ar A x mass AₓBy) / Mr AₓBy

Mass B in AₓBy = (y x Ar B x mass AₓBy) / Mr AₓBy

Note that x, y are the numbers of A and B in AₓBₐ

In CH₄O compounds (Methanol, with relative molecular mass = 32) has a mass of 92 grams and there are 4 Hydrogen atoms, so the mass is:

$mass~H~=~\frac{(4\times relative~atomic~mass~H}{relative~molecular~mass ~CH_4O}~\times~mass~CH_4O$

$mass~H~=~\frac{4\times1}{32} \times~92$

mass H = 11.5 grams

Learn more

A sample of H₂SO₄

link

mole Caffeine

link

Given a compound with 169 amu

link

Keywords: Proust, the Comparative Law, CH₄O

How many grams of hydrogen are in 92 g of ch4o?

Answer from: Quest

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

Answer from: Quest

so what is the problem with your lab report and whats the subject of the lab report? i will you