01/23/20

chemical eqautions
A solution of potassium chromate reacts with a solution of lead(II) nitrate to produce a yellow precipitate of lead(II) chromate and a solution of potassium nitrate.(a) Write the balanced chemical... more
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01/23/20

chemical equations
Carbon dioxide is a green house gas that is linked to global warming. It is released into the atmosphere through the combustion of octane (C8H18) in gasoline. Write the balanced chemical equation... more
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01/23/20

chemical eqautions
When an antacid tablet dissolves in water, the fizz is due to a reaction between sodium hydrogen carbonate (sodium bicarbonate, NaHCO3) and citric acid (H3C6H5O7).3 NaHCO3(aq) + H3C6H5O7(aq)  3... more
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01/23/20

chemical equations
If 5.70 mol of calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2), a gas used in welding, will be produced?CaC2(s) + 2 H2O(l)  Ca(OH)2(aq) + C2H2(g)
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01/23/20

chemical equations
When aluminum is mixed with iron(III) oxide, iron metal and aluminum oxide are produced along with a large quantity of heat.Fe2O3(s) + 2 Al(s)  2 Fe(s) + Al2O3(s) + heatWhat mole ratio would you... more
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01/23/20

If 4.5 g of water at 1.0° C absorb 33 joules of heat, what is the temperature change of the water?
The partial answer is: 1.X°C
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01/23/20

If 62.7 joules of heat energy are added to 1.0 grams of water at 20° C, what will be the resulting temperature of the water?
The Partial answer is 3X° C
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01/23/20

in a chemical reaction the temperature of a 150 gram water bath is raised 5°C. how many joules does the water absorb?
Partial answer is 3XXX J
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01/23/20

3TC is a small molecule, antiretroviral medication (C8H11N3O3S). What mass (in g) of nitrogen is in 7.43*10 moles of 3TC? (Molar mass of C8H11N3O3S 229.26 gmol)

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01/22/20

Fill in the blank for protons, neutrons, electrons, and charge
Fill in the blanks in the chart below with the symbol, mass number, number of protons, neutrons and electrons and charge. When you enter the charges, enter them after the number, i.e. 2+ or... more
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01/22/20

Chlorine gas will react with 3,450mL of hydrogen gas to yield what mass of hydrogen chloride gas at 25.0oC and 1.13atm?
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01/22/20

2Al + 2OH- + 2H2O → 3H2 + 2AlO2- How many mL of H2 are released at 750.0mmHg and 50.0oC when Drano, with 0.150g of Al, is used for cleaning?
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01/22/20

How many Liters of carbon dioxide gas will be produced when 75.0g of calcium carbonate are decomposed into calcium oxide at room temperature (22.0C) and room pressure (1.00 atm)?
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01/22/20

4.50 L of ethane (C2H6) is burned in air at STP. _____C2H6 + _____O2 → _____CO2 + _____H2O (assume all are gases) After balancing the equation, calculate the Liters of O2 used in the reaction.
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01/22/20

How many L of hydrogen gas at 1.11atm and 25.0oC will be produced from 16.7g of magnesium reacting with an excess amount of hydrochloric acid, HCl? Mg + 2HCl → MgCl2 + H2
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01/22/20

Calculate the density and the uncertainty of an Al cylinder using the following data.
Calculate the density and the uncertainty of an Al cylinder using the following data. Metal Mass (g) 17.7706 Length... more
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01/21/20

Will povidone iodine dissolve a polar molecule?
Why or why not? Thank you. I just cannot seem to find answers on Google.
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01/19/20

Redox Reaction Titration Lab Question
How do I calculate the purity of a sample of impure oxalic acid if 0.4006 g of this material requires a titration with 28.62 mL of a potassium permanganate solution, 1.000 mL of which contains... more
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01/18/20

what mass in grams
(a) Atoms are very small compared to objects on the macroscopic scale. The radius of a gold atom is 144 pm. What is this value in meters and in centimeters?  m   cm(b) The mass of a... more
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01/17/20

Calculate the kinetic energy of this object in joules.
An object with a mass of 26.9 pounds is moving with a uniform velocity of 46.8 miles per hour. Calculate the kinetic energy of this object in joules.(Enter your answer to three significant... more
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01/17/20

Balancing Nuclear Equations Worksheet
How do you write Radon-220 undergoes alpha deca?write an equation showing protactinium-229 going through alpha decay forming actinium-225. write a beta decay equation for uranium-238.
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01/17/20

Chemistry question
I wonder if Cu cant react with dilute h2so4 then why does CuO react with it?
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01/16/20

What's the concentration of low partial pressure oxygen (0.1 MPa O2 partial pressure ) in subcritical water (8 MPa total pressure) from 50°C to 250°C?
In a closed system, we pressurize and heat up the autoclave half filled with water to 8MPa with 99% CO2 and 1% O2, I wonder how much O2 is dissolved in water at different temperatures in a range... more
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01/16/20

Chemistry - Stoichiometry
C3H8 + 5 O2 --> 4 H2O + 3 CO2In this equation, how many grams of O2 is required to produce 720 grams of H2O?I know that first we need to calculate the moles for H2O and from it we can get the... more
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01/16/20

The pressure in an automobile tire is 204 kPa at 29 C. At the end of a trip on a hot sunny day, the pressure has risen to 300 kPa. What is the temperature of the air in the tire?
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