A rigid vessel contains 2.5 mol of H2(g). How many grams of hydrogen are in the vessel.
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Ответ:
Mass of hydrogen in the vessel = 5 grams
Number of moles:The number of moles is defined as the given mass over molar mass.
Given:
Number of moles= 2.5 mol
To find:
Mass of hydrogen=?
Molar mass of hydrogen =2g/mol
On substituting the values in the given formula we will get:
Thus, mass of hydrogen in the vessel is 5 grams.
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Ответ:
5 g of H₂ are contained in the vessel
Explanation:
A typical excersise of conversion:
We determine molar mass of H₂.
This is a dyatomic molecule, as molar mass of H is 1g/mol, molar mass of H₂ will be 2g/mol.
Let's make the conversion of units:
2.5 mol . 2g/mol = 5 g
5 g of H₂ are contained in the vessel
Ответ:
The term "false color" is used to describe what astronomers (and others) often do to images to make them more comprehensible. Long ago, when radio astronomers first started generating images of sources, they wound up with essentially images that were just shades of gray - ranging from pure black to pure white
Explanation:
False color (or pseudo color) refers to a group of color rendering methods used to display images in color which were recorded in the visible or non-visible parts of the electromagnetic spectrum. A false-color image is an image that depicts an object in colors that differ from those a photograph (a true-color image) would show. In this image, colors have been assigned to three different wavelengths that our eyes cannot normally see.
In addition, variants of false color such as pseudocolor, density slicing, and choropleths are used for information visualization of either data gathered by a single grayscale channel or data not depicting parts of the electromagnetic spectrum (e.g. elevation in relief maps or tissue types in magnetic resonance imaging).
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