01/21/22

A sample of HCl is introduced at one end of a 1meter tube.A sample of gas with a molecular weight of 34.5 is introduced at the other. calculate where the two gases meet.
it asks to use Graham's Law
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01/21/22

A gas occupying a volume of 725 mL at a pressure of 1.345 atm is allowed to expand at constant temperature until its pressure reaches 0.345 atm. What is its final volume?
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01/21/22

Reaction orders and rate constants

In each of the following situations where the rate law and units used are described, suggest units for the rate constant (k).a. A third-order reaction where the rate is measured in mol L-1 s -1 and... more
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01/21/22

Reaction orders and rate constants
The following data was collected for the reaction belowH2(g) + Br2(g) --> 2 HBr (g)Expiriment [H2] [Br2] Rate [M s-1]1 0.25 0.0012 1.20 x 10-42 0.50 0.0012 4.80 x 10-43... more
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01/21/22

if I ended a reaction with 50 grams of so3, how many grams of s8 did I begin with
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01/20/22

An atomic cation with a charge of +1 has the following electron configuration: 1s22s22p63s23p63d14s1 What is the chemical symbol?
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01/20/22

What is the mass of the water produced if 5.00 grams of propane are consumed in the following reaction?
What is the mass of the water produced if 5.00 grams of propane are consumed in the followingreaction?C3H8+5O2=3CO2+4H2O
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01/20/22

If the mass and the size of the electron is sooo small, then how does the cathode ray move a peddle wheel in the discharged tube?

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01/19/22

Express your answer using two significant figures.
I have to express this by using two significant numbers, 18 ∘C , 185∘C , -45 ∘F
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01/19/22

Chemistry 101 - Reactions
You burn a gasoline (C8H18) in the presence of oxygen, producing carbon dioxide and water vapor. If the gasoline weighed 137.4 g and the masses of carbon dioxide and water vapor produced were 424.3... more
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01/19/22

A 23.0g sample of silver nitrate AgNO3, is added to a sample of distilled water to produce a 45.7 solution.
A) What is the molar concentration of the solution?B) You wish to make 500.0mL of a 0.600M solution. What volume of the above solution will you dilute?
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01/19/22

Calculate the pH of the following solutions:
A) 0.03 M HNO3B) 0.02M H3PO4C) 0.03M NaOH
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01/19/22

Help me with answer this!!
How many grams of calcium phosphate (precipitate) could be produced by combining 11.917g of calcium nitrate dissolved in water with 16.136g of rubidium phosphate dissolved in water? Report your... more
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01/19/22

Help me answer this!!
You have reacted 100.00 mL of 0.934M calcium nitrate solution with 100.00 mL of 1.051M sodium phosphate solution. After filtering and drying the precipitate, you find that you have 7.473g of... more
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01/18/22

An empty beaker has a mass of 251.70 g. When water is added to the beaker, the combined mass is 268.309 g. What is the mass of the water in grams?
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01/18/22

chemistry question on activity
Consider a solution containing the following compounds: 0.01 M NaNO3, 0.002 M Ca(NO3)2 and 0.003 M Al(NO3)3. (i) Calculate the ionic strength of the solution (ii) Calculate the activity... more
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01/17/22

What volume of 1.25M hydroiodic acid is needed to neutralize 37.45g of magnesium hydroxide?
Balanced chemical equation is 2HI + Mg(OH)2 -> MgI2 + 2H2O
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01/17/22

Help me answer this!!!!
You have reacted 100.00 mL of 0.949M calcium nitrate solution with 100.00 mL of 0.955M sodium phosphate solution. After filtering and drying the precipitate, you find that you have 8.630g of... more
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01/17/22

Help with this question??
How many grams of calcium phosphate (precipitate) could be produced by combining 12.354g of calcium nitrate dissolved in water with 16.076g of rubidium phosphate dissolved in water? Report your... more
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01/16/22

Calculate the amount of energy required to increase the temperature of 1 mol of Fructose by 5 degrees
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01/16/22

chemistry question
Would a precipitate form if 255 mL of 0.00016 mol/L lead (II) nitrate, Pb(NO₃)₂(aq), was mixed with 456 mL of a 0.00023 mol/L solution of sodium sulfate, Na₂SO₄(aq)? Show your work.
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01/16/22

Calculating Concentration Using the Equilibrium Constant
At a given temperature, Kc = 3.24 for the reaction H2 (g) + CO2(g) ⇌ H2O (g) + CO (g) Of 0.800 mole of both H2 and CO2 (g) are placed in a 1.0 L container at this temperature, what is the... more
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01/15/22

The correct structure of methyl ethanoate is?
ABCDE
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01/15/22

For the reaction shown below at equilibrium, the equilibrium constant expression is?
option 1option 2Option 3Option 4
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01/15/22

Determine the equilibrium constant, K, for the reaction shown below if there are 0.10 moles of all four molecules in a 2.0 L sealed vessel at equilibrium
0.05 1.0 0.10 10 20
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