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jeka94
3 years ago
5

19pts please help How many grams of CO are needed to react with an excess of Fe203 to produce 225.5 g Fe? Number after the symbo

ls are subscripts unless there is a ^ to show it is an exponent? Fe203(g) +CO(g)-->3CO2(g)+2Fe(s) Please explain if can
Chemistry
1 answer:
Travka [436]3 years ago
4 0
12.2 - Logarithms<span>Before reading this section you may want to review the section on </span>exponents<span>, since logarithms are based on them. </span>

<span>Introduction: </span><span>It is a fact that every positive number, </span>y<span>, can be written as 10 raised to some power, </span>x. We write this relationship in equation form, like this:<span>y = 10 x.</span>For example it is quite obvious that 1000 can be written as 10 3, because the exponent 3 means multiply 10 by itself 3 times and 10·10·10=1000. It may not be quite so obvious that 16 can be written as 10 1.2. What does it mean to multiply something by itself 1.2 times? And how can we calculate that this is the correct power of 10? The answer is in the graph shown below.

This is a graph of the equation  y = 10 x  that was mentioned above. To make this graph we made a table of a few obvious values of  y = 10 x<span>  as shown below, left. Then we plotted the values in the graph (they are the red dots) and drew a smooth curve through them. Then we observed that the curve went through </span>y<span> = 16 and </span>x<span> = 1.2 (the black dot). We take this to mean that 16 = 10</span> 1.2<span>. </span>
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Answer:

An alloy is a combination of metals or metals combined with one or more other elements. For example, combining the metallic elements gold and copper produces red gold, gold and silver becomes white gold, and silver combined with copper produces sterling silver. Elemental iron, combined with non-

Explanation:

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3 years ago
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A 58.5 g sample of glass is put into a calorimeter (see sketch at right) that contains 250.0 g of water. The glass sample starts
Ket [755]

Answer:

The specific heat capacity of glass is 0.70J/g°C

Explanation:

Heat lost by glass = heat gained by water

Heat lost by glass = mass × specific heat capacity (c) × (final temperature - initial temperature) = 58.5×c×(91.2 - 21.7) = 4065.75c

Heat gained by water = mass × specific heat capacity × (final temperature - initial temperature) = 250×4.2×(21.7 - 19) = 2835

4065.75c = 2835

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5 0
3 years ago
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When mixed, solutions of silver nitrate, AgNO3, and sodium sulfate, Na2SO4, form a precipitate of silver sulfate, Ag2SO4. The ba
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Answer:

2 AgNO3 + Na2SO4 → Ag2SO4 + 2 NaNO3

Explanation:

The general schemefor a reaction is given as;

Reactants --> Products

In this question, the reactants are AgNO3 and Na2SO4. The product is Ag2SO4.

The equation is given as;

AgNO3 + Na2SO4 --> Ag2SO4

The other poduct formed in this reaction is NaNO3.

The full reaction is given as;

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3 years ago
Solids are usually more dense than:
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Solids are usually more dense than liquids and gases. 
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