06/04/21

Balance the equation
Balance the equation___C3H8 + ____O2 --->___ CO2 + ____H2O
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06/04/21

Chemistry question please if anyone knows :)
_________ the temperature causes the kinetic energy to increase. Thus, molecules are moving _________ and colliding more _________. This causes the rate of reaction to _________.A) increasing,... more
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06/04/21

The Mole and Stoichiometry
Element A has two isotopes. The first isotope is present 11.06% of the time and has a mass of 137.77. The second isotope has a mass of 122.45. Calculate the atomic mass of element A. (To two... more
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06/03/21

Use the following balanced equation to answer the question: 2 Fe2O3 +6 Cl2 --> 4 FeCl3 + 3 O2 How many moles of O2 are produced when 1.54 moles of Fe2O3 are used?
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06/03/21

Stoichiometry chemistry
How many grams of NaOH will be needed to produce 1.045 x 10^23 molecules of NaC2H3O2?
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06/03/21

Write and balance of the following chemical equation

Sodium oxide decomposes to produce oxygen gas and sodium metal.
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06/03/21

General Chemistry chapter 5
Suppose 0.450L of 0.420M H2SO4 is mixed with 0.400L of 0.250M KOH. What concentration of sulfuric acid remains after neutralization?
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06/03/21

Help - Equilibrium Law & the Strength of Acids and Bases
BASE Question:The pH of a solution of 4.58 mol/L acetic acid in water is a.bc
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06/02/21

Chemistry help!!!
The volume of a gas at 24°C and 0.39 atmis 91 mL. What volume will the same gassample occupy at standard conditions?Answer in units of mL.
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06/02/21

Hi can someone pls help solve this! Thank you so much!!
1. What is the hydrogenion concentration of asolution containing3.98 pH?2. What is the hydroniumion concentration of asolution containing8.98 pH?3. Calculate the hydrogenion concentration of... more
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06/02/21

Which is oxidized, reduced, the oxidizing agent and the reducing agent
2Na + Cl₂ → 2NaClOxidized:Oxidizing Agent:Reduced:Reducing Agent:
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06/02/21

Which is oxidized, reduced, the oxidizing agent and the reducing agent
3Mg+ 2AlBr₃ → 3MgBr₂ + 2AlOxidized:Oxidizing Agent:Reduced:Reducing Agent:
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06/01/21

Write the reaction and simplified Ksp expression (algebraic expression) for the dissociation of:
a) Silver Chromateb) calcium sulfatec) lead(II) chlorided) iron(II) phosphate
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06/01/21

First Order Kinetics
A particular reaction is found to be first order. The reactant has an initial concentration of 4.82 M and a rate constant of 0.00610 s−1. Calculate the final concentration of this reactant after... more
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06/01/21

Second Order Kinetics Half Life
A particular reaction is found to be second order. The reactant has an initial concentration of 2.19 M and a rate constant of 0.00870 M−1s−1. Calculate the half life of this reactant in seconds.I... more
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06/01/21

What is the white and gray matter in the brain really made of?
Hi, I'm really interested in neurology and neuroanatomy and I was confused about white and gray matter in the brain. White matter is myelinated axons and gray matter is somas, but doesn't each... more
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06/01/21

please help me with honors chem molarity question
Sodium chlorate is used as an oxidizer in the manufacture of dyes, explosives and matches. Calculate the mass of solute needed to prepare 1.575 L of 0.00250 M NaClO3 (ℳ = 106.45 g/mol).A. 419 gB.... more
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06/01/21

please help me with honors chem molarity
Calculate each of the following quantities.(a) grams of solute in 164.8 mL of 0.207 M calcium acetate  ---------------g(b) molarity of 584 mL solution containing 21.1 g of potassium... more
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06/01/21

A chemist has a block of copper metal (density is 8.96 g/mL). The block weighs 2.30 g. What is the volume of the copper block in mL?
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06/01/21

How many moles of phosphorus atoms do you have if you have 4.60 × 10²² atoms of phosphorus. (The mass of one mole of phosphorus is 30.97 g.)
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06/01/21

How much heat, in kJ, will be absorbed by a 25.0 g piece of aluminum (specific heat = 0.930 J/g･°C) as it changes temperature from 25.0 °C to 76.0 °C?
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06/01/21

What quantity of heat (in kJ) is absorbed in the process of making 0.771 mol of CF₄ from the following reaction?
C (s) + 2 F₂ (g) → CF₄ (g) ∆H° = 141.3 kJ/mol
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05/31/21

Second Order Kinetics
A particular reaction is found to be second order. The reactant has an initial concentration of 2.45 M and a rate constant of 0.00300 M^−1 s^−1. Calculate the final concentration of this reactant... more
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05/31/21

What is the hydronium ion concentration of a solution that has an hydroxide ion concentration of 1.0 x10–3 M? A. 1.0 x10–14 M B. 1.0 x10–11 M C. 1.0 x10–7 M D. 1.0 x10–3 M
What is the hydronium ion concentration of a solution that has an hydroxide ion concentration of 1.0 x10–3 M?A. 1.0 x10–14 MB. 1.0 x10–11 MC. 1.0 x10–7 MD. 1.0 x10–3 M
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05/31/21

If the Keq is greater then one the reaction will favor .
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