Answer:
Here's it.
Explanation:
Concentrated acids are very corrosive and dangerous chemicals that are commonly encountered in the laboratory. ... Concentrated acids may be fatal if inhaled; and can cause severe eye and skin burns, severe respiratory and digestive tract burns. Contact with other materials may cause a fire.
72 percent is hydrogen. Nuclear fusion converts hydrogen into other elements. The sun is also composed of about 26 percent helium and trace amounts of other elements; oxygen, carbon, neon, nitrogen, magnesium, iron and silicon.
http://www.space.com/17170-what-is-the-sun-made-of.html
201 grams.
<h3>Explanation</h3>
What's the formula of Silver Sulfide?
Consider the two kinds of ions in silver sulfide:
- Silver ions , and
- Sulfide ions .
The charge on the two types of ions should balance. The charge on each sulfide ion is twice as much as that on a silver ion. There needs to be <em>two</em> silver ions for each sulfide ion.
Hence the formula: .
How many <em>moles </em>of formula units in 174 grams of Ag₂S.
Relative atomic mass from a modern periodic table:
- Silver Ag: 107.868;
- Sulfur S: 32.06;
- Chlorine Cl: 35.45.
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How many <em>moles</em> of AgCl formula units will be formed from 174 grams of Ag₂S?
The question doesn't mention the other product in this reaction. Finding that product isn't a must as long as all Ag from Ag₂S end up in AgCl.
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We are trying to answer the question: how many moles of AgCl does <em>each</em> mole formula unit of Ag₂S produce. Thus, assign a coefficient of <em>one</em> to Ag₂S.
There are two silver atoms in each formula unit Ag₂S. Both would end up in AgCl. However, there's only one silver atom in each formula unit of AgCl. Two Ag atoms would make two formula units of AgCl. In other words, each mole formula units of Ag₂S would produce <em>two</em> moles formula units of AgCl.
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There are 0.702 moles of Ag₂S formula units in 174 grams of the compound. That would lead to of AgCl.
What's the mass of 1.40 mol of AgCl?
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More liquid water will evaporate as it has enough energy to change state.
Answer: B
Substance G reacts with compound XY to form GY and X. This is single replacement