25,963 Answered Questions for the topic chemistry

Chemistry Organic Chemistry

01/14/24

Arrange the following bases in Increasing order:
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Chemistry

01/14/24

How many gram of propane must be burned to supply the heat required to vaporize 6.75 L of water at 298 K?
The equation of combustion is given and so is the delta H at -2.22 kJ (assuming per mole). I'm confused on how to even start this problem, particularly with the vaporization aspect of water.
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Chemistry Organic Chemistry

01/12/24

Please arrange the order on increasing acidity. Also, can Acidity and being stable be proportional to each other?

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Chemistry Science

01/11/24

Names and Formulas of Ionic Compounds
Why do these elements in the formulas need to be in parentheses?Ba3(PO4)2(NH4)2OFe(ClO)3
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Chemistry Organic Chemistry

01/11/24

Is lone pair not considered in presence of double bond?
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Chemistry

01/11/24

Writing reviews for previous tutors
I'd like to write a review for my amazing tutor Kayla but I also realize it's been longer than 14 days since our last session and she's truly amazing and I would really love the opportunity to... more
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Chemistry

01/08/24

Calculate the molar heat of fusion of this substance in kJ/mol. 300g of this unknown substance, with a molar mass of 180g/mol, gives off 65 kJ of energy as it freezes.
Honors Chemistry; Molar Enthalpy of Fusion and Vaporization
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Chemistry Organic Chemistry

01/08/24

Does OCH3 show stronger +M effect compared to NH2? Because of +M and +I effect in OCH3?
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Chemistry

01/08/24

chemistry (quickly please)

Write a balanced equation for the reaction of sulfuric acid(H2(SO4)) with gallium (Il) hydroxide to form water and gallium (lI) sulfate From the balanced equation, determine the mass of gallium... more
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Chemistry Organic Chemistry

01/07/24

Can COOH show +M effect? Due to lone pairs of O? Isn't COOH acidic in nature, and thus should attract e- rather than donate?
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Chemistry Organic Chemistry

01/06/24

Why doesn't OCH3 show -M effect? (O-R groups) Is presence of a lone pair mandatory for M effect?
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Chemistry

01/05/24

Lewis Dot Diagram
Given the Lewis Dot Diagram for CH2F2 answer the following:a) Only using the Lewis Dot Diagram can we tell if the C-H bond requires more energy to break (respond with either yes or no)?b) Only... more
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Chemistry

01/03/24

chemistry question
The compound diborane (B2H6) was at one time considered for use as a rocket fuel. Its combustion reaction is B2H6(g) + 3 O2(ℓ) → 2 HBO2(g) + 2 H2O(ℓ) The fact that HBO2, a reactive compound, was... more
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Chemistry Biology Writing

01/02/24

Tutoring oppurtunities
Hello, My name is JacksonI am currently enrolled at Rutgers University, majoring in Biological sciences. Biology comes very easy to me and I feel I am qualified to tutor students at the high school... more
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01/02/24

An ________ particle is a helium nucleus, consisting of 2 protons and 2 neutrons (without the electrons).
Fill in the statement:An ________ particle is a helium nucleus, consisting of 2 protons and 2 neutrons (without the electrons).A. BetaB. AlphaC. OmegaD. Positron
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Chemistry Biology

01/02/24

If the neutrons in a nucleus of an atom are more numerous than the number of protons in the nucleus, then which of the following statements are true?
A. The atom is considered an ionB. The atomic weight is equal to the number of electronsC. The atom has additional electronsD. None of the above
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Chemistry

12/26/23

At STP, 50.0 mL of a gas weighs 0.301g and is found to be 47.4% sulfur and 52.6% chlorine. What is the molecular formula of the gas?

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Chemistry

12/23/23

Electrolysis of Cadmium: What mass of cadmium metal is produced when an electric current of 4.0 Amps passes through a dilute aqueous solution of cadmium chloride for 3.0 minutes?

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Chemistry

12/22/23

chemistry Stoich
85.00 g of calcium carbonate reacts with 45.00 g of iron(III) phosphate. What is mass, in grams, of iron(III) carbonate will form? please quick answer
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Chemistry

12/21/23

Based on the bond energies for the reaction below, what is the enthalpy of the reaction, in kJ? HC≡CH(g) + 5/2 O₂(g) → 2 CO₂(g) + H₂O(g)
H single bond H = 432 kjH single bond C = 411 kjH single bond N = 386 kjH single bond O = 459 kjC single bond C = 346 kjC single bond N = 305 kjC single bond O = 358 kjN single bond N = 167 kjN... more
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Chemistry

12/21/23

Chemistry Stoich
In the Haber process, 32.00 g of nitrogen gas is combined with 40.00 g of hydrogen gas to form ammonia gas, NH3. What mass, in grams, of ammonia will form? 
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Chemistry

12/19/23

You are performing an experiment which uses 113Ag. 113Ag is radioactive. The rest of the equation in the description.
You are performing an experiment which uses 113Ag. 113Ag is radioactive, decays by beta minus emission (β−), and has a half-life of 5.3 hours. It requires 31.8 hours to ship the material from the... more
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Chemistry

12/19/23

An electron with a mass of 9.11x10-31 kg and traveling at a velocity of 1.19x10^7 m/s has a wavelength which is measurable. What is the wavelength?
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Chemistry

12/19/23

A local radio station can be tuned in by dialing your radio to a frequency of 99 MHz. Calculate the wavelength (in meters) and (joules) (HINT: MHz means 1x106 Hz)
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Chemistry

12/19/23

Find the energy of a photon of light if the wavelength is 4.60x10^-7 m.
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