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Write the conversion factors for each: cm/minute to in/second, km/h^2 to m/second^2, and mm^3 to cm^3?
$"cm/min"$ to $"in/s"$ $(1 color(red)(cancel(color(black)("cm"))))/(1 color(red)(cancel(color(black)("min")))) × ("1 in")/(2.54 color(red)(cancel(color(black)("cm")))) × (1 color(red)(cancel(color(black)("min"))))/("60 s") = "0.006 56 in/s"$ $"km/h"^2$ to $"m/s"^2$ $(1 color(red)(cancel(color(black)("km"))))/(1 color(red)(cancel(color(black)("h"^2)))) × ("1000 m")/(1 color(red)(cancel(color(black)("km")))) ×...
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1.00 liter of $O_2$ gas at 760 torr pressure and 0°C has a mass of 1.42 g. If the pressure on the gas is increased to 8.00 atm at 0°C, what is the density of the $O_2$ in grams/liter?
Before doing any calculation, try to predict what you should see happen to the of the gas. Under the initial conditions for pressure and temperature, the oxygen gas had...
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A chemical compound requires 8 ounces of Chemical A and 12 ounces of Chemical B. A mixture contains 24 ounces of Chemical A and 30 ounces of Chemical B. How can you fix the mixture to make the chemical compound?
Since 8x3=24 and since 12x3=36 you need to add 6oz of chemical B to have 24oz of chemical A and 36oz of chemical B. Take 1/3 of the total mixture...
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A reaction occurs between two liquid substances in a sealed jar. What will happen to the mass of the sealed jar and is contents after the reaction occurs?
Well, nothing should happen... to the mass, anyway. The identities of what's inside should change as a result of the reaction, but mass is always conserved in a closed system....
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State the difference between a physical change and a chemical change, and list three indications that a chemical change has occurred. Which indication is most suggestive of a chemical reaction?
Physical changes are changes in the formation or state of molecules and atoms. The arrangement of the molecules and atoms is different after the change but the chemical composition of...
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If a molecule of carbon dioxide is involved in a chemical reaction, how is it represented in the chemical equation for the reaction?
Now, of course, as chemists we deal with molar quantities, and the oxidation reaction must involve a series of complex elementary steps, but here the molecule is simply represented as...
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A biochemist is attempting to replicate a chemical reaction that commonly takes place in cells. During the chemical reaction, starch is broken down into glucose. What will most likely happen if the biochemist adds an enzyme to the reactants?
Enzymes do not change the reactions, neither are they changed by the reactions. enzymes lower the activation energy of the reaction allowing the reaction to occur at a lower...
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7.0 moles of sulfur atoms and 10 moles of oxygen molecules are combined to form the maximum amount of sulfur trioxide, how many moles of which reactant remain unused at the end of the reaction?
.........And oxygen is in deficiency. Given $10$ $mol$ of dioxygen gas, at most, $6.67$ $mol$ of sulfur trioxide can be generated. This is clearly indicated by the stoichometric equation. Should...
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A chemical reaction is a process that changes some chemical substances into others. What is involved in the process of forming these new chemical substances?
Chemical change is characterized by the formation of new substances, and the making and breaking of strong chemical bonds. Usually this is signalled by a colour change, though some few...
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In the reaction $2Al +6HBr -> 2AlBr_3 + 3H_2$, when 3.22 moles of $Al$ reacts with 4.96 moles of $HBr$, how many moles of $H_2$ are formed?
The balanced chemical equation represents ratio in which the chemicals react. Since 2 moles aluminuim are required for every 6 moles of hydrogen bromide, yet we only have 3.22 moles...
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