05/07/21

When chlorine gas reacts with carbon dioxide to make carbon tetrachloride and oxygen gas, how many moles of carbon containing product are made from 14.78 moles of carbon dioxide?
Don't understand this question.
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05/07/21

use conversion factors to perform the following conversions
how many moles of hydrogen are in 65.78 grams of water?
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05/06/21

general chemistry 1
When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The... more
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04/24/21

Complete the following reaction:
Complete the following reaction:HCO3-1 +HPO4-2 -->
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04/22/21

What is the [OH-1] concentration if the pH is 11.32?
1.) 2.68 x 10-42.) 0.0021 M3.) 4.79 x 10-9 M4.) 1 x 10-14 M5.) 7.00 x 10-14 M
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04/22/21

Which molecule has the highest boiling point?
Br2 Cl2 H2 F2 I2
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04/22/21

Teacher never explains his work

In the reaction below, how many moles of A2 will be used to produced 2.45 mol of XA?a. Balance the chemical equation:   XY₃ +   A₂ →   XA +  Y2Ab.    moles A2
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04/22/21

How would you classify a solution that contains 64 grams of CaCl2 dissolved in 100 grams of water at 10 degrees Celsius?
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04/21/21

ASAP answer please with all steps

ASAP answer please with all steps 8.0 mL of 0.10 M HCl is titrated with 0.10 M NaOH. Perform the following calculations pH of the acid before any NaOH is added Volume of 0.10 M NaOH needed to... more
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04/21/21

ASAP answer please with all steps
ASAP answer please with all stepsTo make a buffered solution of HX and NaX with a pH of 6.11, what mass of NaX (MM 130.5 g/mol) must be added to 250.0 mL of a 1.0 M solution of HX?Ka of HX is 1.72... more
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04/21/21

An amount of molten silver at its melting point (962°C) is added to 1.00 kg of water at 20.0°C. The final temp is 75.8°C. Find the mass of the silver.
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04/21/21

ASAP answer please with all steps
To make a buffered solution of HX and NaX with a pH of 6.11, what mass of NaX (MM 130.5 g/mol) must be added to 250.0 mL of a 1.0 M solution of HX?
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04/21/21

Calculate ΔG° Given Cell Reaction, Ec+(–Ea)
Use the standard reduction potentials located in the 'Tables' linked above to calculate the standard free energy change in kJ for the reaction:Ni²+ (aq) + 2Cr²+ (aq) → Ni(s) + 2Cr³+ (aq)_______kJK... more
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04/19/21

Find the molarity of 1.15 g KF in 150 mL of water
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04/19/21

Determine the rate law, including the values of the orders and rate law constant, for the following reaction using the experimental data provided.
A+B yields productsTrial 1 A-0.10M B-0.20M rate- 1.2 x 10^-2 m/mintrial 2 A-0.10M B- 0.40M rate-4.8 x 10^-2 m/mintrial 3 A- 0.20M B-0.40M rate-9.6 x 10^-2 M/min
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04/19/21

At 22 °C, an excess amount of a generic metal hydroxide, M(OH)2, is mixed with pure water.

The resulting equilibrium solution has a pH of 10.26.  What is the 𝐾sp of the salt at 22 °C?Ksp= ?
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04/19/21

ΔG° = ΔH° - TΔS°
For the reactionC2H4(g) + H2O(g)  CH3CH2OH(g)G° = -7.9 kJ and S° = -125.7 J/K at 300 K and 1 atm.This reaction is (reactant, product) ______favored under standard conditions at 300 K.The standard... more
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04/15/21

I need help solving in liters, can anyone help me please? It would be so much appreciated, thank you!
A gas sample initially has a volume of 178L, a temperature of 643K, and pressure of 292kPa. If the temperature is adjusted to 57K and the pressure is adjusted to 151kPa, what is the final volume in... more
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04/11/21

When finding pH of acidic buffer solution using Ka, why do we use the salt concentration in the Ka equation?

for example when CH3COOH and CH3COONa are used to make a buffer solution, why we use the [CH3COO-] of the salt in the Ka equation of the acid? isn't the [CH3COO-] from acid not the same... more
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04/05/21

Acids/Bases: Addition of H+ to an unbuffered solution
Determine the change in pH when 0.004 mol H+ were added to a 0.010M unbuffered acetic acid (chemical formula: HC2H3O2) solution. Assume that the volume of the solution is 1.0L.
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04/04/21

Finding the produced gas from baking soda and vinegar

I’m trying to understand how to calculate the gas produced (carbon dioxide) when mixing baking soda and vinegar. I have the balanced equation part, but unsure what to do next. I know it will... more
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04/04/21

SOLVING CHEMISTRY QUESTION GRADE 11 FSC PRE MED
Three gases (8.00g of methane, CH4, 18.0g of ethane, C2H6, and an unknown amount of propane, C3H8) were added to the same 10.0L container. At 23.0°C, the total pressure in the container was... more
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04/03/21

What is the value of Kb for coccaine?
The much-abused drug cocaine is an alkaloid. Alkaloids are noted for their bitter taste, an indication of their basic properties. Cocaine, C12 H21 O4 N, (MM: 303.491) is soluble in water to the... more
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04/03/21

Creating Ph buffers
"Determine the volumes of 0.10 M CH3COOH and 0.10 M CH3COONa required to prepare 10 mL of the following pH buffers: pH 4.7, pH 5.7. How many grams of CH3COONa would it be? (Note: the pKa of CH3COOH... more
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03/22/21

How to find concentration with initial concentration and moles consumed?

Plot on to graph moles of S2O8 vs time to achieve M/s.The initial concentration of S2O8: 0.05M (added is 2.5mL of 0.200M, but it was diluted so 0.200 x 2.5/10mL = 0.05M). Below is the time (s) and... more
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