2,220 Answered Questions for the topic organic chemistry

Organic Chemistry Math Science Biology

05/25/21

Help me with gas laws in chemistry with math
A 75 L sample of dry air cools from 147°C to -37°C while the pressure is maintained at 2.85 atm. What is the final volume?Answer in units of  L
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Organic Chemistry Math Science Biology

05/25/21

please help me with gas laws of chemistry

Calculate the temperature of an argon sample at 55.4 kPa and 18.6 L if it occupies 25.8 L at 75.0°C and 41.1 kPa.A. 65.2°CB.77.2°C     C. 95.0°CD. 72.9°CE. 85.1°C
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Organic Chemistry Science Chemistry Biochemistry

05/25/21

please help me with gas laws in chemistry

Explain why a helium weather balloon expands as it rises in the air. Assume that the temperature remains constant.A. The atmospheric pressure outside the balloon increases, and the gas inside... more
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Organic Chemistry Science Chemistry Biochemistry

05/25/21

please help me with chemistry gas laws
Why do astronauts have to wear protective suits when they are on the surface of the moon? (Select all that apply.)A. The temperatures are too cold, or too hot, to sustain life for long; and there... more
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Organic Chemistry Science Chemistry Biochemistry

05/25/21

help with gas laws please

Give the common units for pressure.A. mmHg, atm, kPaB. mmH2O, atm, Pa    C.mmHg, atm, litersD. mmH2O atm, kPa
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Organic Chemistry Science Chemistry Biochemistry

05/25/21

Please hep with gas laws

Which is not a physical characteristic of gases?A. Gases are the most compressible of the states of matter.B. Gases assume the volume and shape of their containers.    C. Gases will mix evenly and... more
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Organic Chemistry Math Science Biology

05/24/21

Using EcoRI, which cuts at 5' GAATTC 3', indicate how many strands would be produced?
5’ A G A A T T C G C T T A A G T C G A C G T A A G C C G G A A T T C C A T T C G A A T T A G 3’ 3’ T C T T A A G C G A A T T C A G C T G C A T T C G G C C T T A A G G T A A G C T T A A T C 5’ Using... more
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Organic Chemistry Chemistry

05/23/21

What is the name of this molecule CH3-CH=C=CH-CH3?
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Organic Chemistry

05/21/21

Does hydrogen gas react with sulfur dichloride.
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Organic Chemistry Chemistry Chem

05/19/21

Chemistry Help needed!!
SHOW WORK. A 6.0ft person weighs 168lb. Express this person's height in meters and weight in kilograms.(1lb=453.g;1m=3.38ft.) solve using dimensional analysis
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Organic Chemistry Chemistry

05/19/21

chemistry Help needed
The density of methanol, a colorless organic liquid used as a solvent is 0.7918g/mL. If the mass of a sample of methanol is 72.1g, which of the following is the correct volume?91.0583mL or 91.1 mL... more
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Organic Chemistry Chemistry Polar Bond

05/19/21

Copy the structure of 2-chloropentane and indicate the location of the polar bond using the correct symbols.
Copy the structure of 2-chloropentane and indicate the location of the polar bond using the correct symbols.
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Organic Chemistry

05/19/21

the alcohol that gives turbid mixture when mixed with lucas reagent after warming at 60c after 5 minutes in
a) 2-methylpropanolb) 2,2-dimethylpropanolc) PropanolD) ethylene glycol
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Organic Chemistry Chemistry

05/19/21

Use the following information to determine the enthalpy for the reaction shown below.
CO2(g) + 2SO2(g) --> CS2(l) + 3O2(g)     ΔHo = ?C(graphite) + O2(g) --> CO2(g)            ΔHo = −393.5 kJS(s) + O2(g) --> SO2(g)                        ΔHo = −296.8 kJC(graphite) + 2S(s)... more
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Organic Chemistry Chemistry Biochemistry Chem

05/19/21

Consider the following reaction for the questions below: Ca + Br2 --> CaBr2
a. What type of reaction(s) is/are being represented by the chemical reaction above?b. Is this reaction an oxidation-reduction (redox) reaction?c. If this is a redox reaction, then identify the... more
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Organic Chemistry Chemistry

05/19/21

How many moles are in 2.58 g of silver nitrate? Part 2: How many molecules are in 2.58 g of silver nitrate?
I need help with figuring the moles and molecules like I get confused with the equations. Can someone help me out please.
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Organic Chemistry Chemistry Biochemistry

05/18/21

Assume that Silver Nitrate and Calcium Bromide are the starting substances (reactants) in the reaction.

a. Write a balanced chemical reaction betweenSilver Nitrate and Calcium Bromide. Be sure to include physical states.b. State the names of the products that are produced from this reaction.c. Write... more
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Organic Chemistry Biology Chemistry Biochemistry

05/16/21

I would just like to ask what happens to the charges (+2) on the salt of a heavy metal as it disrupts disulfide bridges.
like for example-CH2-S-S-CH2- + Hg2+ = CH2-S-Hg2+ and Hg2+-S-CH2 (were the salts retains its charges)or -CH2-S-S-CH2- + Hg2+ = CH2-S-Hg and Hg-S-CH2 (were the salts become... more
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Organic Chemistry

05/14/21

How much propane did I start with (grams)?
I have 5 grams of water left over from the burning of propane gas. How much did I start with (grams)? What kind of reaction is it?
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Organic Chemistry Math Science Biology

05/14/21

Please help me with chemistry math problems: URGENT PLEASE ANSWER
What is the heat required to vaporize 90.8 g of liquid ethanol, C2H5OH, at its boiling point? The ΔH° of vaporization of ethanol is 39.3 kJ/mol. Use a molar mass with at least as many significant... more
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Organic Chemistry Math Chemistry

05/13/21

What is the mass of magnesium (Mg) needed to react with 0.955 moles of silver nitrate (AgNO3). 2AgNO3 (s) + 1Mg (s) ⟶ 1Mg(NO3)2 (s) + 2Ag (s)
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Organic Chemistry Math Science Biology

05/13/21

please help me with chemistry heat math problems

The heat of fusion of ice is 335 J/g. Calculate the heat liberated when 118 g of water at 0°C is frozen.A. -39.5 kJB. 39.5 kJ    C. -2.84 kJD. 2.84 kJE. some other answer
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Organic Chemistry Math Science Biology

05/13/21

Please help ,e with chemistry heat math problem.

What is the heat required to melt 62.0 g of solid ammonia, NH3, at its melting point? The ΔH° of fusion of ammonia is 5.97 kJ/mol. Use a molar mass with at least as many significant figures as the... more
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Organic Chemistry Math Science Biology

05/13/21

please help me with chemistry heat math problem.

What is the heat required to melt 77.4 g of solid diethyl ether, (C2H5)2O, at its melting point? The ΔH° of fusion of diethyl ether is 7.66 kJ/mol. Use a molar mass with at least as many... more
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Organic Chemistry Math Science Biology

05/13/21

Please help me with chemistry math problems

What is the heat required to vaporize 90.8 g of liquid ethanol, C2H5OH, at its boiling point? The ΔH° of vaporization of ethanol is 39.3 kJ/mol. Use a molar mass with at least as many significant... more
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