09/20/23

What types of attractive chemical interactions can occur between a neutral, hydrophilic side group and surrounding water molecules?

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09/20/23

Explain why the folded structure is more thermodynamically favored (i.e., stable) in an aqueous environment than the unfolded structure.

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09/20/23

At neutral pH, what is the net charge on a “basic” amino acid? What is the net charge on an “acidic” amino acid?

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09/20/23

Provide the formula for each compound.
Provide the formula for each compound.Provide the formula for each compound. hydrochloric acid: potassium carbonate: silicon tetrabromide:
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09/20/23

Name the compounds. Spelling counts.
Name the compounds. Spelling counts.Name the compounds. Spelling counts.  HNO2(aq):  Cr2O3:  CCl4:
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09/20/23

Write the chemical formula for the compound formed by each pair of positive and negative ions.
Write the chemical formula for the compound formed by each pair of positive and negative ions.Write the chemical formula for the compound formed by each pair of positive and negative... more
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09/19/23

Chemistry Stoich
How many moles of As2O5 are produced when 5.62 mol of As react with 7.50 mol of O2?As (s) +  O2 (g)  ⟶   As2O5 (s) 
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09/19/23

Chemistry Stoichiometry
If 10.00 grams of CaCO3 reacts with 15.0 grams of HCl, how many grams of CO2 is produced?CaCO3 (s) +  2 HCl (aq) ⟶ CaCl2 (aq) + CO2 (g) + H2O (l) 
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09/19/23

Name the ions. Spelling counts.
Name the ions. Spelling counts. Li^+: Mg ^2+: O^2−:
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09/18/23

What is the mass sulfur and the percentage?

A manufacturer begins with 10.00 kg of cinnabar and produces 8.62 kg of elemental mercury. What was the mass of sulfur in the original cinnabar?Mass of sulfur: ? kgExpress the mass of sulfur in... more
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09/18/23

Heating cinnabar in the presence of oxygen gas produces elemental mercury and new compounds called sulfur oxides. Is this a physical or a chemical change?
Heating cinnabar in the presence of oxygen gas produces elemental mercury and new compounds called sulfur oxides. Is this a physical or a chemical change? Physical change Chemical Change
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09/18/23

Write the complete symbol, including mass number and atomic number, for each atom.
Write the complete symbol, including mass number and atomic number, for each atom. an oxygen atom with 10 neutrons: a chromium atom with a mass number of 54:
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09/17/23

Write the full electron configuration for Cl− . & What is the atomic symbol for the noble gas that also has this electron configuration?
Write the full electron configuration for Cl-.full electron configuration:? What is the atomic symbol for the noble gas that also has this electron configuration?atomic symbol:?
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09/17/23

How many electrons does a Co atom have in its 3𝑑 subshell? & How many of those electrons are unpaired?
How many electrons does a Co atom have in its 3𝑑 subshell?number of electrons: ? 3d electrons How many of those electrons are unpaired?number of unpaired electrons: ? unpaired electrons
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09/17/23

How many subshells are in the 𝑛=3 shell? & How many orbitals are in the 𝑛=3 shell? & What is the maximum number of electrons in the 𝑛=3 shell?
How many subshells are in the 𝑛=3 shell? ? SubshellsHow many orbitals are in the 𝑛=3 shell? ? OrbitalsWhat is the maximum number of electrons in the 𝑛=3 shell? ? Electrons
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09/17/23

Determine the overall charge on particles with the subatomic makeups given.
Determine the overall charge on particles with the subatomic makeups given. 13 protons, 14 neutrons, and 10 electrons 8 protons, 10 neutrons, and 8 electrons 15 protons, 18 neutrons,... more
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09/17/23

Write the complete symbol, including mass number and atomic number, for each atom.
Write the complete symbol, including mass number and atomic number, for each... more
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09/17/23

A neutral isotope has 45 neutrons and 36 electrons. Identify the element symbol of this isotope and determine the mass number and number of protons.
A neutral isotope has 45 neutrons and 36 electrons. Identify the element symbol of this isotope and determine the mass number and number of protons.element symbol:?mass number:?number of protons:?
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09/17/23

A neutral isotope has a mass number of 65 and 36 neutrons. Identify the element symbol of this isotope and determine the number of protons and electrons.
A neutral isotope has a mass number of 65 and 36 neutrons. Identify the element symbol of this isotope and determine the number of protons and electrons.element symbol:?number of protons:?number of... more
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09/17/23

atom and molecule
An experiment requires that enough C3H8O3 be used to yield 15.5 g of oxygen.How much C3H8O3 must be weighed out
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09/15/23

For the following reaction, 15.8 grams of chlorine gas are allowed to react with 8.99 grams of water.
chlorine (g) + water (l) --- hydrochloric acid (aq) + chloric acid (HClO3)(aq)What is the maximum amount of hydrochloric acid that can be formed?Mass =  gWhat is the FORMULA for the limiting... more
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09/15/23

what order is the reaction
Doubling the concentration of ethane will cause a four-fold increase in the rate of decomposition: C2​H6​→2CH3​ The reaction rate is therefore____ order with respect to the concentration of C2​H6
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09/15/23

Calculate the solubility of nitrogen in water

The solubility of nitrogen in water is 8.21×10-4 mol/L at 0∘C when the nitrogen pressure above the water is 0.790 atm. Calculate the solubility of nitrogen in water when the nitrogen pressure above... more
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09/15/23

For the reaction
For the reaction 2Cl(g)⇌Cl2​(g), the value of the equilibrium constant changes with a change in:  P CI​  container volume  temperature  P CI2 all of these
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09/15/23

Is the reaction at equilibrium?

Nitrogen dioxide dimerizes according to the following reaction: 2NO2​(g)⇌N2​O44(g) Kp​ = 6.7 at 298 Kelvin  A 2.25 - L container initially contains 0.055 mol of NO2​ and 0.082 mol of N2​O4​ at 298... more
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