Answer:
Wouldn’t it be Oxidane, water?
in per unit time some things velocity changes rate is called acceleration
Answer:
Mass = 74.9 g
Explanation:
Given data:
Number of atoms of arsenic = 6.02×10²³ atoms
Mass of arsenic = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022× 10²³ is called Avogadro number.
one mole = 6.02×10²³ atoms
So number of moles of arsenic are 1 mol.
Mass of arsenic:
Mass = number of moles × molar mass
Mass = 1 mol × 74.9 g/mol
Mass = 74.9 g
The correct answer is c. H3PO4 2H++ HPO42¯(Phosphoric acid)
<h3>
Phosphoric acid</h3>
Known also as ortho-phosphoric acid, phosphoric acid is a triprotic acid that occurs as a viscous liquid. It irritates or corrodes human skin, eyes, and other mucous membranes as well as those of experimental animals. However, the irritancy potential of its salts is much smaller. When mice were exposed through inhalation, moderate toxicity was seen. Both phosphate salts and phosphoric acid have been shown to enhance the action of recognized carcinogens, however phosphoric acid alone is neither genotoxic nor carcinogenic. Typically, irrigation or water flushing are used to treat exposures. As a food addition to different cola drinks, phosphoric acid has attracted a lot of attention but also generated a lot of debate due to its potential for negative effects.
Which chemical equation shows the dissociation of 2 protons from trihydrogen phosphate
(phosphoric acid)? (other substances / rxns can be used)
a. H3PO4 H2++ HPO4¯
b.H3PO4 H22+ + PO42¯
c. H3PO4 2H++ HPO42¯
d. H3PO4 H33+ + PO43¯
Learn more about Phosphoric acid here:
brainly.com/question/3700851
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Calcium chloride has the following formula: CaCl2
Based on this formula: one mole of calcium chloride contains two moles of chlorine
Therefore: two moles of calcium chloride would contain four moles of chlorine.
Number of atoms = number of moles x Avogadro's number
Number of atoms = 4 x 6.022 x 10^23 = 2.4088 x 10^24 atoms
