2,220 Answered Questions for the topic organic chemistry

02/24/23

Calculate the [H2O2] after 10 minutes if [H2O2]0 is 0.200M.
The decomposition of H2O, to water and oxygen follows first-order kinetics with a rate constant of 0.0400 min-1.2H2O2(I) -> 2H2O(I)+ 02(g)Calculate the [H2O2] after 10 minutes if [H2O2]0 is 0.200M. more
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Organic Chemistry Chemistry Biochemistry

02/24/23

Calculate the [H2O2] after 10 minutes if [H2O2]0 is 0.200M
Calculate the [H2O2] after 10 minutes if [H2O2]0 is 0.200M
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Organic Chemistry

02/24/23

The daily dose of ampicillin for the treatment of an ear infection is 115.0mg/kg of body weight .what is the daily dose in mg for a 19.09kg child
The daily dose of ampicillin for the treatment of an ear infection is115.0mg/kg of body weight.what is the daily dose in mg for a 19.09 kg child
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Organic Chemistry Math Science Chemistry

02/23/23

How can this Chemistry problem be solved?
Calculate the kilojoules needed to heat 175 g of copper from 82. ∘F to 347 ∘F. The specific heat of Copper is 0.0920 cal/g °C and 0.385 J/ g °C. Give your answer in the correct number of... more
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Organic Chemistry

02/22/23

A 64 µCi sample of Tl-201 decays to 4.0 µCi in 12 days. What is the half-life, in days, of Tl-201?
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02/22/23

What is the reaction of Fe metal with ferric chloride?
What is the reaction of Fe metal with ferric chloride?
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Organic Chemistry Chemistry

02/21/23

Hi, how can I express this problem as a nuclear equation?
A radioisotope emits a positron to form germanium-74.
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Organic Chemistry Math Chemistry

02/21/23

Can anyone help on this chemistry problem?
Part AIf 125. mg of fluorine-18 is shipped at 7:00 A.M., how many milligrams of the radioisotope are still active after 110 min ?Express the mass to three significant figures and include the... more
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Organic Chemistry

02/21/23

Hi! can anyone help me on this Chemistry problem?
The half-life for the radioactive decay of calcium-47 is 4.5 dd. If a sample has an activity of 3.0 CiCi after 9.0 dd , what was the initial activity of the sample? Express your answer using two... more
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Organic Chemistry

02/18/23

A sample of helium gas has a volume of 2.92 L at 23°C. What volume will it occupy at 165°F if the pressure and number of mol are constant?

A sample of helium gas has a volume of 2.92 L at 23°C. What volume will it occupy at 165°F if the pressure and number of mol are constant? 
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Organic Chemistry Algebra 2 Chemistry

02/18/23

An empty steel container is filled with 4.40 atm of H₂ and 4.40 atm of F₂. Question continues below:
An empty steel container is filled with 4.40 atm of H₂ and 4.40 atm of F₂. The system is allowed to reach equilibrium. If Kp = 0.450 for the reaction below, what is the equilibrium partial pressure... more
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Organic Chemistry

02/17/23

Which of the following (with specific heat capacity provided) would require the most energy to increase temperature by 1 oC?

Which of the following (with specific heat capacity provided) would require the most energy to increase temperature by 1 oC? Group of answer choicesA: 1.0 g Si(s) (Cs = 0.712 J/g oC)B: 1.0 g Ar(g)... more
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Organic Chemistry

02/17/23

What is the percent of mass of GaBr3 in the solid mixture?

A solid mixture weighs 0.6813 g. It contains gallium bromide (GaBr3) and other inert impurities. When the solid mixture was dissolved in water and treated with excess silver nitrate (AgNO3), 0.368... more
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Organic Chemistry

02/17/23

Trouble with this question
A 34.8 mL solution of H2SO4(aq) of unknown concentration was titrated with 0.15 M NaOH(aq).        H2SO4(aq) +2 NaOH(aq) ⟶ Na2SO4(aq) + 2 H2O(l)If it takes 20.4 mL of NaOH(aq) to reach the... more
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Organic Chemistry

02/17/23

What is the percent yield of PI3(g)?

Consider the balanced chemical reaction when phosphorus and iodine react to produce phosphorus triodide:     2 P(s) + 3 I2(g) → 2 PI3(g)If 131 g of I2(s) are reacted with excess P(s) to produce... more
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Organic Chemistry

02/17/23

Given a balanced Which reactant is the limiting reactant and what is the mass (in grams) remaining of the reactant in excess?

Given a balanced chemical equation,   N2(g) + 3 H2(g) ⟶ 2 NH3(g)If a reaction mixture contains 2 moles of N2(g) and 7 moles of H2(g), which reactant is the limiting reactant and what is the mass... more
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Organic Chemistry

02/17/23

Troubling question
Given a balanced chemical equation between H2SO4(aq) and KOH(aq)   H2SO4(aq) + 2 KOH(aq) → K2SO4(aq) + 2 H2O(l)What volume (in mL) of 0.5 M H2SO4(aq) solution is necessary to completely react with... more
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Organic Chemistry

02/17/23

I'm stuck on a question
According to the reaction below, how many moles of Cu2CO3(s) can be produced from 125 mL of 0.198 M CuNO3(aq)? Assume that there is excess Li2CO3(aq).2 CuNO3(aq) + Li2CO3(aq) → Cu2CO3(s) + 2 LiNO3(aq) more
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Organic Chemistry

02/17/23

Need urgent help
In a precipitation reaction between Al(NO3)3(aq) and Na2S(aq), 12.6 mL of 0.150 M Al(NO3)3(aq) completly reacted with 10.8 mL of Na2S(aq). What was the molarity of Na2S(aq)?2 Al(NO3)3(aq) + 3... more
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Organic Chemistry

02/16/23

The specific heat capacity of lead is 0.13 J/g oC. How much heat (in J) is required to raise the temperature of 12.6 g of lead from 28.3°C to 36.3°C? Keep three significant figures in your answer.

The specific heat capacity of lead is 0.13 J/g oC. How much heat (in J) is required to raise the temperature of 12.6 g of lead from 28.3°C to 36.3°C? Keep three significant figures in your answer. 
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Organic Chemistry Math Biology Chemistry

02/14/23

A rate law is 1/2 order with respect to a reactant. Describe (quantitatively) what happens to the rate of reaction when the concentration of this reactant is doubled.

A rate law is 1/2 order with respect to a reactant. Describe (quantitatively) what happens to the rate of reaction when the concentration of this reactant is doubled.
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Organic Chemistry Math Biology Chemistry

02/14/23

Consider the possible reaction mechanism below.
A + B ➞ C + D D + B ➞ C a. Show that mechanism is consistent with balanced equation. b. Show which is the rate-determining step (RDS). Explain your choice.
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Organic Chemistry Math Science Biology

02/14/23

The experiment is repeated at 500˚C. How would the following change (qualitatively) at the new temperature (explain your answer)?

This reaction was originally done at a temperature of 250K, but now it is being done at 500K.4PH3 (g) ➞ P4 (g) + 6H2 (g)a. The half-life of phosphine. b. The rate law for phosphine decomposition.... more
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Organic Chemistry

02/11/23

Chem 301: I need help with drawing (3R,4S)-3,4-dimethylhexane
Draw (3R,4S)-3,4-dimethylhexane. Use wedges and dashes to show stereochemistry.Please draw all four bonds at chiral centers. Use wedge and dash bonds at chiral centers only. Do not use wedges and... more
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Organic Chemistry Science Chemistry Biochemistry

02/11/23

Provide the structures of the 1,2- and 1,4- addition products obtained from the following reaction.
Provide the structures of the 1,2- and 1,4- addition products obtained from the following reaction. Make sure to label which is 1,2- and which is 1,4-, which is kinetic and which is the... more
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